Artykuły w czasopismach: „Pervious pavement”

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Gomez-Ullate, E., J. R. Bayon, S. Coupe i D. Castro-Fresno. "Performance of pervious pavement parking bays storing rainwater in the north of Spain". Water Science and Technology 62, nr 3 (1.08.2010): 615–21. http://dx.doi.org/10.2166/wst.2010.308.

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Pervious pavements are drainage techniques that improve urban water management in a sustainable manner. An experimental pervious pavement parking area has been constructed in the north of Spain (Santander), with the aim of harvesting good quality rainwater. Forty-five pervious pavement structures have been designed and constructed to measure stored water quantity and quality simultaneously. Ten of these structures are specifically constructed with different geotextile layers for improving water storage within the pavements. Following the confirmation in previous laboratory experiments that the geotextile influenced on water storage, two different geosynthetics (Inbitex and a One Way evaporation control membrane) and control pervious pavements with no geotextile layers were tested in the field. Weather conditions were monitored in order to find correlations with the water storage within the pervious pavement models tested. During one year of monitoring the three different pervious pavement types tested remained at their maximum storage capacity. The heavy rain events which occurred during the experimental period caused evaporation rates within the pervious pavements to be not significant, but allowed the researchers to observe certain trends in the water storage. Temperature was the most closely correlated weather factor with the level of the water stored within the pervious pavements tested.

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Gomez-Ullate, E., A. V. Novo, J. R. Bayon, Jorge R. Hernandez i Daniel Castro-Fresno. "Design and construction of an experimental pervious paved parking area to harvest reusable rainwater". Water Science and Technology 64, nr 9 (1.11.2011): 1942–50. http://dx.doi.org/10.2166/wst.2011.175.

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Pervious pavements are sustainable urban drainage systems already known as rainwater infiltration techniques which reduce runoff formation and diffuse pollution in cities. The present research is focused on the design and construction of an experimental parking area, composed of 45 pervious pavement parking bays. Every pervious pavement was experimentally designed to store rainwater and measure the levels of the stored water and its quality over time. Six different pervious surfaces are combined with four different geotextiles in order to test which materials respond better to the good quality of rainwater storage over time and under the specific weather conditions of the north of Spain. The aim of this research was to obtain a good performance of pervious pavements that offered simultaneously a positive urban service and helped to harvest rainwater with a good quality to be used for non potable demands.

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Henderson, Vimy, Susan L. Tighe i Jodi Norris. "Pervious Concrete Pavement". Transportation Research Record: Journal of the Transportation Research Board 2113, nr 1 (styczeń 2009): 13–21. http://dx.doi.org/10.3141/2113-02.

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Rahimi, Hamidreza, Xiaonan Tang, Sadra Rahimi i Prateek Kumar Singh. "Using Travertine in Pervious Pavement to Control Urban-Flooding and Storm Water Quality". International Journal of Applied Science 1, nr 1 (29.06.2018): p20. http://dx.doi.org/10.30560/ijas.v1n1p20.

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The conventional methods for controlling urban-flooding are to build raceway networks to transfer flood water away as quickly as possible. However, due to fast increase of urban population, the conventional methods are facing some problems especially when rainfall intensity is higher than design expectation. The main reason for such problems are due to impervious surfaces. Therefore, pervious pavements, such as porous asphalts or pervious concrete blocks, are now recommended to use by environmental engineers. Compared with conventional pavement surfaces, pervious pavements have lots of benefits although they are relatively expensive to build. This paper introduces the mineral rock of Travertine as the materials for pervious pavements, and describes an experimental model to determine the inflation patterns and storm water quality improvement in flood precipitating simulation. The results indicated that Travertine pavement can not only decrease more than 90%of Copper, Lead and Zinc but also play an important role in urban-flood management with a 50% decrease of storm water.

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V.S., Agilan. "Experimental Study on Pervious Concrete Pavement". Journal of Advanced Research in Dynamical and Control Systems 12, SP7 (25.07.2020): 248–53. http://dx.doi.org/10.5373/jardcs/v12sp7/20202104.

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Ryu, Byung-Hyun, Sojeong Lee i Ilhan Chang. "Pervious Pavement Blocks Made from Recycled Polyethylene Terephthalate (PET): Fabrication and Engineering Properties". Sustainability 12, nr 16 (7.08.2020): 6356. http://dx.doi.org/10.3390/su12166356.

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The importance of permeable and pervious pavements in reducing urban stormwater runoff and improving water quality is growing. Here, a new pervious pavement block material based on recycled polyethylene terephthalate (PET) waste is introduced, which could contribute to reducing global plastic waste via PET’s utilization for construction material fabrication. The engineering properties and durability of recycled PET aggregate (RPA) pervious blocks are verified through flexural tests, in situ permeability tests, clogging tests, and freeze-thaw durability tests, and their cost-effectiveness is assessed by comparison with existing permeable/pervious pavers. Their engineering and economic characteristics confirm that the RPA pervious blocks are suitable for use in urban paving.

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Kadurupokune, N., i N. Jayasuriya. "Pollutant load removal efficiency of pervious pavements: is clogging an issue?" Water Science and Technology 60, nr 7 (1.10.2009): 1787–94. http://dx.doi.org/10.2166/wst.2009.571.

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Pervious pavements in car parks and driveways reduce the peak runoff rate and the quantity of runoff discharged into urban drains as well as improve the stormwater quality by trapping the sediments in the infiltrated water. The paper focuses on presenting results from the laboratory tests carried out to evaluate water quality improvements and effects of long-term decrease in infiltration rates with time due to sediments trapping (clogging) within the pavement pores. Clogging was not found to be a major factor affecting pervious pavement performance after simulating 17 years of stormwater quality samples.

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Hu, Yinhong, Weiwei Yu, Bowen Cui, Yuanyuan Chen, Hua Zheng i Xiaoke Wang. "Pavement Overrides the Effects of Tree Species on Soil Bacterial Communities". International Journal of Environmental Research and Public Health 18, nr 4 (23.02.2021): 2168. http://dx.doi.org/10.3390/ijerph18042168.

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Human disturbance and vegetation are known to affect soil microorganisms. However, the interacting effects of pavement and plant species on soil bacterial communities have received far less attention. In this study, we collected soil samples from pine (Pinus tabuliformis Carr.), ash (Fraxinus chinensis), and maple (Acer truncatum Bunge) stands that grew in impervious, pervious, and no pavement blocks to investigate the way pavement, tree species, and their interaction influence soil bacterial communities by modifying soil physicochemical properties. Soil bacterial community composition and diversity were evaluated by bacterial 16S amplicon sequencing. The results demonstrated that soil bacterial community composition and diversity did differ significantly across pavements, but not with tree species. The difference in soil bacterial community composition across pavements was greater in pine stands than ash and maple stands. Soil bacterial diversity and richness indices decreased beneath impervious pavement in pine stands, and only bacterial richness indices decreased markedly in ash stands, but neither showed a significant difference across pavements in maple stands. In addition, bacterial diversity did not differ dramatically between pervious pavement and no pavement soil. Taken together, these results suggest that pavement overwhelmed the effects of tree species on soil bacterial communities, and had a greater effect on soil bacterial communities in pine stands, followed by ash and maple stands. This study highlights the importance of anthropogenic disturbance, such as pavement, which affects soil microbial communities.

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Starke, P., P. Göbel i W. G. Coldewey. "Effects on evaporation rates from different water-permeable pavement designs". Water Science and Technology 63, nr 11 (1.06.2011): 2619–27. http://dx.doi.org/10.2166/wst.2011.168.

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The urban water balance can be attenuated to the natural by water-permeable pavements (WPPs). Furthermore, WPPs have a 16% higher evaporation rate than impermeable pavements, which can lead to a better urban climate. Evaporation rates from pavements are influenced by the pavement surface and by the deeper layers. By a compared evaporation measurement between different WPP designs, the grain size distribution of the sub-base shows no influence on the evaporation rates in a significant way. On the contrary, a sub-base made of a twin-layer decreases the evaporation by 16% compared to a homogeneous sub-base. By a change in the colour of the paving stone, 19% higher evaporation rates could be achieved. A further comparison shows that the transpiration-effect of the grass in grass pavers increases the evaporation rates more than threefold to pervious concrete pavements. These high evapotranspiration rates can not be achieved with a pervious concrete paving stone. In spite of this, the broad field of application of the pervious concrete paving stone increases the importance in regard to the urban climate.

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Jayasuriya, L. N. N., N. Kadurupokune, M. Othman i K. Jesse. "Contributing to the sustainable use of stormwater: the role of pervious pavements". Water Science and Technology 56, nr 12 (1.12.2007): 69–75. http://dx.doi.org/10.2166/wst.2007.753.

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The city of Melbourne, Australia is experiencing a water crisis with potable water storage reservoirs at an all time low. With increasing urbanisation there is an ever increasing need to research and explore sustainable water management initiatives. There is potential to minimise the negative impacts of stormwater runoff and augment dwindling supplies of potable water through adoption of pervious paving technology. The traditional approach to stormwater management has focused on constructing drainage networks to carry stormwater away from developed areas as quickly as possible to avoid the risk of flooding. The main aim of this research project was to establish relationships between rainfall intensity, infiltration rate and pervious pavement runoff and to examine the improvement to stormwater quality after infiltrating through pervious pavements. This paper describes the laboratory experiment set-up to determine the infiltration patterns and stormwater quality improvement for simulated storms precipitating on pervious pavements. Next, the scaling-up of the experimental rig to a field-based trial is explained. Preliminary results from this work are presented to demonstrate the potential benefits of pervious pavements in the Australian landscape.

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Sprouse, Charles E., Conrad Hoover, Olivia Obritsch i Hannah Thomazin. "Advancing Pervious Pavements through Nomenclature, Standards, and Holistic Green Design". Sustainability 12, nr 18 (9.09.2020): 7422. http://dx.doi.org/10.3390/su12187422.

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Researchers developing pervious pavements over the past few decades have commendably demonstrated long-term run-off reduction using a diverse collection of materials. Today, pervious pavements are widely recognized as a low impact development technique and a type of green infrastructure, and installations are proliferating throughout the United States and worldwide. The entire field of pervious pavements though, is being profoundly stunted by three persistent problems: conflicting nomenclature, flawed testing standards, and the absence of a holistic green design framework. This study examines each problem and proposes novel solutions. On nomenclature, a multi-channeled study of the terms “pervious”, “permeable”, and “porous” considers each word’s etymology and usage in the academic literature, in ASTM International standards, and by (U.S.-based) governmental entities. Support is found for using pervious pavements (i.e., “through” the “road”) as the over-arching category of all water passable pavements, branching down into porous pavements (i.e., “full of pores”, including porous asphalt and porous concrete) and permeable pavements (i.e., “containing passages”, often between paver units). ASTM International standards are shown to insufficiently account for the impact of paver unit size on infiltration rate, warranting the development of a more reliable testing method featuring variable infiltration ring size, shape, and placement. Finally, a ten-part holistic green design framework is elucidated for use in assessing candidate pavements and engineering new pavements, contextualizing the latest pervious pavement research and illuminating a brighter path forward.

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Tamai, Nobuyuki, Charles G. Jeevaraj, Takashi Asaeda, Yusuke Hirosawa i Arata Ichikawa. "GROUNDWATER RUNOFF THROUGH PERVIOUS PAVEMENT". PROCEEDINGS OF THE JAPANESE CONFERENCE ON HYDRAULICS 29 (1985): 115–20. http://dx.doi.org/10.2208/prohe1975.29.115.

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M. Ganesh, K., A. S. S. Vara Prasad, P. S. Viswa Harish i A. Subrahmanyam Raju. "Study of Mechanical Properties of Pervious Concrete as a Pavement Material by Partial Replacement of Ggbs in Cement with Addition of Cellulose Fibers". International Journal of Engineering & Technology 7, nr 3.31 (24.08.2018): 219. http://dx.doi.org/10.14419/ijet.v7i3.31.18300.

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Among all the transportation systems roadways is most commonly used transportation system. But in present scenario roads faces a lot of problems like potholes, cracks and many other distresses. Not even these but water is also the main enemy to the pavement which causes deformations and changes the texture of subgrade soil resulting in large variation in performance.The total Impervious Surface Change (ISC) in India for the decade 2000 to 2010 is 2274.62 km2. This is one of the most considerable problems due to rapid urbanization where there is a tremendous increase in construction of black topped and different types of impervious pavements. This has an adverse effect on the environment as the storm water becomes stagnant over the surface of the pavement due to inadequate drainage conditions.The necessity for reducing stagnation and the surface runoff has given the inception of pervious pavement surface. Pervious concrete pavement is a special type of its kind with high perviousness with no or minimal fines which allow water to percolate through it and thus the water which is accumulated over the surface can be collected and used for various purposes.The present work studied the mechanical properties and also the permeability of pervious concrete of mix 3:1 aggregate cement ratio. The control mix is altered by partially replacing 30% of cement with Ground Granulated Blast furnace Slag (GGBS), included Cellulose fibers of 5% of weight of the cementitious material and combination of both in one mix and compared the results obtained.The properties such as compressive strength, split tensile strength, flexural strength and permeability are assessed by performing tests. It was observed that there is an increase in Compressive Strength, Split Tensile Strength, Flexure Strength and decrease in the permeability in the altered pervious concrete mixes when compared to the Pervious concrete with no additives.

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Vancura, Mary, Kevin MacDonald i Lev Khazanovich. "Structural Analysis of Pervious Concrete Pavement". Transportation Research Record: Journal of the Transportation Research Board 2226, nr 1 (styczeń 2011): 13–20. http://dx.doi.org/10.3141/2226-02.

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Mullaney, Jennifer, i Terry Lucke. "Practical Review of Pervious Pavement Designs". CLEAN - Soil, Air, Water 42, nr 2 (3.12.2013): 111–24. http://dx.doi.org/10.1002/clen.201300118.

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Liu, Hanbing, Guobao Luo, Longhui Wang, Wensheng Wang, Wenjun Li i Yafeng Gong. "Laboratory Evaluation of Eco-Friendly Pervious Concrete Pavement Material Containing Silica Fume". Applied Sciences 9, nr 1 (26.12.2018): 73. http://dx.doi.org/10.3390/app9010073.

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Pervious concretes, such as sustainable pavement materials, have great advantages in solving urban flooding, promoting urban ecological balance, and alleviating urban heat island effect, due to its special porous structure. However, pervious concrete typically has high porosity and low strength. The insufficient strength and poor freeze-thaw durability are important factors that restrict its wide application, especially in seasonal frozen areas. Improving the strength and freeze-thaw resistance of pervious concrete will expand its application. Silica fumes, as an industrial by-product waste and supplementary cementitious material, play an important role in improving concrete performance. The objective of this paper was to study the effects of silica fumes on properties of sustainable pervious concrete. Silica fumes were used to replace cement with the equivalent volume method at different levels (3%, 6%, 9%, and 12%). The control pervious concrete and silica fume-modified pervious concrete mixtures were prepared in the lab. The porosity, permeability, compressive strength, flexural strength, and freeze-thaw resistance properties of all mixtures were tested. The results indicated that the addition of silica fumes significantly improved the strength and freeze-thaw resistance of pervious concrete. The porosity and permeability of all pervious concrete mixtures changed little with the content of silica fumes due to the adoption of the equal volume replacement method.

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Liu, Hanbing, Guobao Luo, Peilei Zhou, Haibin Wei, Wenjun Li i Di Yu. "Flexural-Fatigue Properties of Sustainable Pervious Concrete Pavement Material Containing Ground Tire Rubber and Silica Fume". Sustainability 11, nr 16 (18.08.2019): 4467. http://dx.doi.org/10.3390/su11164467.

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With the development of urbanization, pervious concrete has been increasingly used in urban road pavement structures. The objective of this paper was to investigate the effect of stress levels and modifier (ground tire rubber and silica fume) on the fatigue life of pervious concrete and establish the fatigue equations with different survival probabilities. In order to improve the deformability of pervious concrete without sacrificing its strength, ground tire rubber and silica fume were added into pervious concrete. Two kinds of pervious concrete, control pervious concrete and ground tire rubber and silica fume modified pervious concrete, were made in the laboratory. The pervious concrete beam specimens of 100 × 100 × 400 mm were casted, and the static flexural strength and flexural strain of the two kinds of pervious concrete were tested. The fatigue lives of two pervious concretes were tested using MTS fatigue testing machine under four different stress levels (0.85, 0.80, 0.75, and 0.70). The fatigue life was analyzed by two-parameter Weibull distribution. The parameters of Weibull distribution were determined by graphical method, maximum likelihood method and moment method. The Kolmogorov–Smirnov test was used to test the Weibull distribution and the fatigue equations under different survival probabilities were established. The results showed that ground tire rubber and silica fume modified pervious concrete had better deformability while ensuring strength compared to control pervious concrete. The addition of ground tire rubber and silica fume improved the fatigue life of pervious concrete. The two-parameter Weibull distribution was suitable to characterize the fatigue characteristics and predict the fatigue life of pervious concrete. Fatigue equations with different survival probabilities were a good guide for pervious concrete design.

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Rakh, Avinash A. "Behavior of Pervious Concrete Pile based on Vertical Loading". International Journal for Research in Applied Science and Engineering Technology 9, nr VII (31.07.2021): 3884–91. http://dx.doi.org/10.22214/ijraset.2021.37231.

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Permeable granular piles are used to increase the time rate of consolidation, reduce liquefaction potential, improve bearing capacity, and reduce settlement. However, the behaviour of granular piles depends on the confinement provided by surrounding soil, which limits their use in very soft clays and silts, and organic and peat soils. This research effort aims to develop a new ground-improvement method using pervious concrete piles. Pervious concrete piles provide higher stiffness and strength, which are independent of surrounding soil confinement, while offering permeability comparable to granular piles. This proposed ground-improvement method can improve the performance of different structures supported on poor soils. To achieve the goal of the research project, a series of pervious concrete sample mixing has been conducted to investigate the pervious concrete material properties. Laboratory tests are carried out on a pervious concrete pile of 100 mm diameter and variation at different lengths (500mm,400mm,300mm) surrounded by sand of different density. The tests are carried out either with an entire equivalent area loaded to estimate the stiffness of improved ground or only a column loaded to estimate the limiting axial capacity. Pervious concrete is a special concrete product made primarily of a single-sized aggregate. Pervious concrete has been used in pavements to reduce storm-water-runoff quantities and perform initial water-quality treatment by allowing water to penetrate through the surface. In the United States, pervious concrete is mainly used in pavement applications, including sidewalks, parking lots, tennis courts, pervious base layers under heavy-duty pavements, and low traffic-density areas. The vertical load responses of pervious concrete are the variation of soil stresses and displacement are discussed. Nine tests are conducted on pervious concrete pile further investigate the behaviour of the pervious concrete pile and surrounding soil under vertical load condition. Therefore, Pervious Concrete Piles is particularly suitable for reinforcing subsoil that has low strength and poor permeability.

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Radlińska, Aleksandra, Andrea Welker, Kathryn Greising, Blake Campbell i David Littlewood. "Long-Term Field Performance of Pervious Concrete Pavement". Advances in Civil Engineering 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/380795.

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The work described in this paper provides an evaluation of an aged pervious concrete pavement in the Northeastern United States to provide a better understanding of the long-lasting effects of placement techniques as well as the long-term field performance of porous pavement, specifically in areas susceptible to freezing and thawing. Multiple samples were taken from the existing pavement and were examined in terms of porosity and unit weight, compressive and splitting tensile strength, and the depth and degree of clogging. It was concluded that improper placement and curing led to uneven pavement thickness, irregular pore distribution within the pervious concrete, and highly variable strength values across the site, as well as sealed surfaces that prevented infiltration.

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Sičáková, Alena, i Marek Kováč. "Relationships between Functional Properties of Pervious Concrete". Sustainability 12, nr 16 (5.08.2020): 6318. http://dx.doi.org/10.3390/su12166318.

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Pervious concrete is characterized by its open-void structure, which gives it a number of specific properties and allows specific applications, including pervious pavements, residential roads, alleys, sidewalks, parking lots, patios, and so on. Permeable areas are extremely important for the creation of sustainable cities in terms of the water cycle. Due to its high void content and low cement/mortar content, pervious concrete generally may have significantly reduced strength when compared with conventional concrete. That is why a wide range of research activities is devoted to the balance between acceptable void content, strength, as well as other significant properties. Knowledge of the relationships between the individual properties is very important for understanding this specific material. In this paper, a wide range of 38 different composition variants has been tested to determine the dependencies between the essential properties of pervious concrete. The variables related to the type of aggregate, maximum grain size, the grain-size composition, the amount of binder, and the kind (composition) of binder. The dependencies reported in the article are defined with high reliability R2 ranging from 0.75 to 0.95. On the basis of the dependencies thus determined, it can be predicted that a density of min. 1740 kg/m3 must be reached to meet the requirement of min. 10 MPa for nonpavement applications, while a density of min. 1960 kg/m3 must be achieved to meet min. 20 MPa for pavement applications. The criteria of the void ratio for pavement applications can be set at 20 ± 3%, while the criteria for nonpavement applications can be set at 28 ± 6%.

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Lim, Emiko, Kiang Hwee Tan i Tien Fang Fwa. "High-Strength High-Porosity Pervious Concrete Pavement". Advanced Materials Research 723 (sierpień 2013): 361–67. http://dx.doi.org/10.4028/www.scientific.net/amr.723.361.

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A study to achieve high-strength, high porosity and permeability pervious concrete pavement was carried out. First, the mix proportion in terms of cement content and coarse aggregate-cement ratio (CA/C) and water-cement (W/C) ratio were varied. Next, a mix proportion providing the optimal combination of strength and porosity was chosen, and polymer superplasticizers and short discrete fibers were added to examine their effect on the strength and porosity. Results showed that a water-cement ratio of 0.2 resulted in a dry and brittle mix that led to compressive strength less than 15 MPa but a high permeability rate of approximately 20mm/s. A mix with CA/C ratio of 4.25 resulted in compressive strength of 13.9 MPa, flexural strength of 3MPa and high porosity of more than 20%. Using comb polymer superplasticier and 2% steel fibers resulted in compressive strength of 25.1 MPa and flexural strength of 3.6 MPa at 28 days without compromising on the porosity.

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Ahmed, T., i S. Hoque. "Study on pervious concrete pavement mix designs". IOP Conference Series: Earth and Environmental Science 476 (11.06.2020): 012062. http://dx.doi.org/10.1088/1755-1315/476/1/012062.

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Hsieh, Ping-Cheng, i You-Cheng Chen. "Surface water flow over a pervious pavement". International Journal for Numerical and Analytical Methods in Geomechanics 37, nr 9 (6.02.2012): 1095–105. http://dx.doi.org/10.1002/nag.2074.

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Golroo, Amir, i Susan L. Tighe. "Fuzzy set approach to condition assessments of novel sustainable pavements in the Canadian climate". Canadian Journal of Civil Engineering 36, nr 5 (maj 2009): 754–64. http://dx.doi.org/10.1139/l09-025.

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Since the use of pervious concrete pavement structures (PCPSs) is essentially still in the trial stage in Canada, long-term and quantitative pavement condition data are not available. The existing approaches applied to assess pervious concrete pavement structure (PCPS) conditions are ad hoc and suffer from methodological limitations. A fuzzy set technique is proposed herein as an efficient tool for dealing with qualitative and incomplete pavement condition data on distress types, severities, densities, and weighting factors. Using this method, a comprehensive fuzzy condition index was developed based on Ministry of Transportation of Ontario (MTO) methodology and using fuzzy pavement condition data. This fuzzy condition index was converted to a single value that allowed for comparisons of pavement conditions using several ranking techniques. A case study of 24 PCPS sites was utilized to demonstrate how the fuzzy representations of the condition index compared with associated single values. It is shown that this approach can effectively provide extensive condition indices for PCPSs and rank them accordingly, using only limited and imprecise pavement condition data.

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Hwang, Chao Lung, Chun Tsun Chen, Hsiu Lung Huang, Sheng Szu Peng, Le Anh Tuan Bui i Yuan Yi Yan. "The Design and Case Study of Pervious Concrete Materials". Advanced Materials Research 287-290 (lipiec 2011): 781–84. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.781.

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This study is mainly focused on the design and application of pervious concrete material to pavement and growing plant. The test results show: 1. Addition of fine aggregate obtains better binder quality. 2. Both small aggregate size and good aggregate gradation improve strength, but reduce void ratio and permeability. 3. A data bank of the relationship of the strength, the void ratio and the permeability of pervious concrete was built. 4. A practice case study of pavement demonstrates excellent permeability comparing to the local code and good quality as well as grass growing normally.

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Endawati, Jul, Lilian Diasti i Enung. "Characteristics of Pervious Concrete with Environmental Friendly Based Binder". Applied Mechanics and Materials 865 (czerwiec 2017): 263–69. http://dx.doi.org/10.4028/www.scientific.net/amm.865.263.

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In general, the use of massive flexible and rigid pavement for road construction causing green land reduction that have an impact on the reduction of the catchment area. Therefore, the use of porous concrete is an environmentally friendly alternative. Its usage is expected to absorb water into the ground. Permeable pavements have different design goals if compared to the conventional pavement, due to the ability to infiltrate the storm water through the pavement surface. The purpose of this research is to get the optimum proportion of porous concrete mixture using a friendly environment binder material. Fly ash (FA) and silica fume (SF) were used to replace a certain part of the Portland Cement Composite (PCC). The maximum FA replacement referred to the proportions of the FA percentage in the massive paving industry (25%) and the maximum SF replacement (6%) as recommended by ACI 225R-10. The highest 90-day compressive strength gained by specimens of 12% PCC replacement by FA (5.87 MPa), which is 10.2% higher compared to the porous concrete compressive strength which binder composed of 12% FA and 6% SF replacement. The permeability varies at 28 days, but at the age of 90 days, the porous concrete permeability almost evenly, so that the influence of the 6% silica fume in the mixture is not indicated. The ratio of 6% replacement of cement by silica fume with no fly ash gave the highest permeability of 1.4 cm/s, approaching the previous research conducted by Schaefer, et al (2006), while at the age of 90 days the permeability of porous concrete (1.11 cm/s) closed with the results done by Montes (2006).

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Liu, Hanbing, Guobao Luo, Longhui Wang i Yafeng Gong. "Strength Time–Varying and Freeze–Thaw Durability of Sustainable Pervious Concrete Pavement Material Containing Waste Fly Ash". Sustainability 11, nr 1 (31.12.2018): 176. http://dx.doi.org/10.3390/su11010176.

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Pervious concretes, as sustainable pavement materials, have great advantages in addressing a number of environmental issues. Fly ash, as the industrial by-product waste, is the most commonly used as cement substitute in concrete. The objective of this paper is to study the effects of waste fly ash on properties of pervious concrete. Fly ash was used to replace cement with equivalent volume method at different levels (3%, 6%, 9%, and 12%). The control pervious concrete and fly ash modified pervious concrete were prepared in the laboratory. The porosity, permeability, compressive strength, flexural strength, and freeze–thaw resistance of all mixtures were tested. The results indicated that the addition of fly ash decreased the early-age (28 d) compressive strength and flexural strength, but the long-term (150 d) compressive strength and flexural strength of fly ash modified pervious concrete were higher than that of the early-age. The adverse effect of fly ash on freeze–thaw resistance of pervious concrete was observed when the fly ash was added. The porosity and permeability of all pervious concrete mixtures changed little with the content of fly ash due to the use of equal volume replacement method. Although fly ash is not positive to the properties of pervious concrete, it is still feasible to apply fly ash as a substitute for cement in pervious concrete.

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Liu, Hanbing, Guobao Luo, Yafeng Gong i Haibin Wei. "Mechanical Properties, Permeability, and Freeze–Thaw Resistance of Pervious Concrete Modified by Waste Crumb Rubbers". Applied Sciences 8, nr 10 (8.10.2018): 1843. http://dx.doi.org/10.3390/app8101843.

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Due to the negative effects that derive from large impervious surfaces in urban areas, pervious concrete has been developed, and has become an environmentally friendly pavement material. As a porous and permeable material, pervious concrete presents an overwhelming advantage in solving urban problems, such as flooding, groundwater decline, urban heat island phenomena, etc. Waste crumb rubber has been verified as a feasible modifier for pavement material. The objective of this paper is to explore the effects of rubber particle size and incorporation level on the permeability, mechanical properties, and freeze–thaw resistance of pervious concrete. Two kinds of rubbers (fine and coarse) with four incorporation levels (2%, 4%, 6%, and 8%) are used in the experiment. Permeability, compressive strength, flexural strength, flexural strain, and freeze–thaw resistance are tested. The results indicate that the addition of rubber slightly decreases strength and permeability, but significantly enhances ductility and freeze-thaw resistance. Fine crumb rubber with a suitable incorporation level could remarkably improve the ductility and freeze–thaw resistance of pervious concrete without sacrificing excessively strength and permeability.

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Batezini, Rafael, José Tadeu Balbo, Liv Haselbach, Filipe de Oliveira Curvo, Guilherme Nunes Kalleder, Beatriz Sayuri Sato i Domênico Zema. "Experimental appraisal for characterizing laboratorial and field performance parameters of pervious concrete pavement". Ambiente Construído 21, nr 2 (kwiecień 2021): 177–94. http://dx.doi.org/10.1590/s1678-86212021000200520.

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Abstract Loratorial tests with pervious concrete comprised porosity and hydraulic conductivity as well as mechanical parameters as compressive, indirect tensile and bending strengths besides assessing its static and dynamic elasticity moduli. Later, a pervious sidewalk area of 1.0 x 8.65 square meters was built in order to determine the variation of the infiltration rate along time; over such experimental sidewalk, impact deflection tests performed allowed to assess back calculated moduli of the pervious concrete layer, resulting 33% to 13% lower than conventional concretes. A mechanistic analysis allowed to estimate the required thickness of concrete for heavy- and light-traffic areas. Tests disclosed no significant difference among the different concrete mixes, with 25% porosity and 0,1 cm/s permeability. Initial sidewalk infiltration rate of 0.5 cm/s dropped 50% four months after construction. It was verified that pervious concrete thicknesses for trucks and buses use are far higher than conventional concrete pavements.

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Gireesh Kumar, Pala, Abhirami Priyanka Pathivada, Velugoti Sasi Jyothishma Himaja, Korukonda Rachana Tejaswi i Garapati Keerthi Liniya. "Theoretical Investigation on Pervious Concrete Pavement (PCP) as Sustainable Pavement Technology (SPT)". IOP Conference Series: Materials Science and Engineering 1006 (25.12.2020): 012016. http://dx.doi.org/10.1088/1757-899x/1006/1/012016.

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Ferreira, Gerardo, Isidoro, Moruzzi, Ferreira i Lima. "Impact οf Pavement Distribution οn Hillslope Runoff ιn Peri-Urban Landscapes, Based οn Laboratorial Experiments". Proceedings 30, nr 1 (7.11.2019): 10. http://dx.doi.org/10.3390/proceedings2019030010.

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It is widely accepted that urbanization modifies the hydrological processes, increasing runoff and flood hazard. However, after decades of research, the magnitude of the impacts is not well understood. This is partially due to spatial-temporal differences in rainfall-runoff processes over complex landscapes comprising different land-uses, typical of peri-urban areas. This study aims to investigate the impact of different spatial patterns of pavement on surface runoff, under distinct weather conditions (dry vs wet). Inspired on urban cores observed in peri-urban catchments, 7 spatial patterns were investigated: 100% pavement, 100% pervious, and 60% pavement (and 40% pervious) under continuous placement located upslope or downslope, and under dispersed patterns with regular, irregular and linear distribution. Concrete blocks were used as pavement material, whereas pervious surfaces were simulated using either bare soil, 1.5 kg·m−3 with sandy-loam texture, or commercial natural grass carpets. The 13 configurations of pavement and pervious materials, pavement-soil and pavement-grass were simulated in the laboratory, in a 1.0 × 1.0 m2 flume, with 0.05 m soil depth and 9° slope. Three rainfall simulation experiments were performed for each spatial configuration. Each experiment comprises a set of four sequential storms with 50 mm·h−1 over 20-min, interrupted by 30-min intervals, to simulate dry and increasingly wet antecedent settings. Results show that runoff is driven by both spatial pattern and soil moisture. Runoff coefficients ranged from 70–81% in fully paved surfaces to 1.4–40% in bare soil and 0.2–3.8% in grass, exhibiting increasing values from dry to wet antecedent moisture conditions, especially in bare soil. Under dry conditions, continuous pavement generates more runoff if placed downslope than upslope (28% vs 5% with grass and 37% vs 33% with bare soil). Under wet settings, however, continuous pavement generated (i) higher runoff if associated with downslope than upslope bare soil (63% vs 52%), due to saturation-excess favored by cumulative rainfall and upslope runoff; and (ii) lower runoff if associated with downslope than upslope grass surface (33% vs 24%). When considering dispersed pavement, runoff increased from dry to wet conditions, ranging from 32% to 62% and 1.3% to 23% when distributed with soil and grass covers, respectively. Adequate urban planning based on spatial patterns that maximize runoff sinks over the landscape should be considered to enhance urban flood resilience. Grass (as other covers) has higher capacity to retain and infiltrate rainfall and runoff than bare soil, and may represent a nature-based solution to mitigate flood hazard in peri-urban areas.

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Marks, Andrew. "Pervious Concrete Pavement—How Important Is Compressive Strength?" Journal of Green Building 3, nr 3 (1.08.2008): 36–41. http://dx.doi.org/10.3992/jgb.3.3.36.

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As asphalt becomes more expensive and in short supply, and as the need to manage stormwater runoff increases, designers must revisit old assumptions and take a fresh look at how pavements need to work in a sustainable environment, and how to design and specify for them. Pervious pavements are a recent addition to the list of viable paving options, but as yet, there have been few ways to design them and to effectively predict their performance. This article offers some help to accomplish those tasks.

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Barišić, Ivana, Mario Galić i Ivanka Netinger Grubeša. "Pervious concrete mix optimization for sustainable pavement solution". IOP Conference Series: Earth and Environmental Science 90 (październik 2017): 012091. http://dx.doi.org/10.1088/1755-1315/90/1/012091.

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Lin, Jen-Yang, Ti-Chi Yuan i Chi-Feng Chen. "Water Retention Performance at Low-Impact Development (LID) Field Sites in Taipei, Taiwan". Sustainability 13, nr 2 (14.01.2021): 759. http://dx.doi.org/10.3390/su13020759.

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Low-impact development (LID) aims to retain stormwater at source sites rather than achieve water drainage. The infiltration and storage of rainwater on site is the most commonly applied LID design concept, turning impervious pavements into pervious pavements. In this study, three field sites in Taipei city, Taiwan, were monitored. Two of the sites were located on campuses, and one site was a roadside location. They were constructed at different times and had distinct purposes, but the common design aspect was the infiltration function of the ground surface. We monitored the water retention performance at the above three sites and applied a verified stormwater management model (SWMM) to characterize the performance at these case sites. The observed data show that if the accumulative rainfall was lower than 20 mm, the water retention rate at each of the three case sites reached almost 50%; at 60 mm rainfall, the rate was 40%. With increased rainfall amount, the water retention rate decreased because the storage capacity was limited. Because water retention is typically controlled by the infiltration capacity, the rainfall intensity dominated the performance. At the three field sites, the water retention rate was 40% on average at a rainfall intensity below 20 mm/h. Above this rainfall intensity, the infiltration performance of the pervious pavement decreased. The verified model was applied to assess the performance at the three sites under the Taipei city drainage system design standard, i.e., the five-year recurrent period storm level, at 78.8 mm/h. The results demonstrate that the water retention rates were 9.1%, 14.2%, and 61.0% at the three sites, indicating that the pervious pavement could reduce the loading of the current stormwater drainage system. Dispersed sites should be considered in urban stormwater management to mitigate flooding risk in urban areas.

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Yu, Weiwei, Yinhong Hu, Bowen Cui, Yuanyuan Chen i Xiaoke Wang. "The Effects of Pavement Types on Soil Bacterial Communities across Different Depths". International Journal of Environmental Research and Public Health 16, nr 10 (21.05.2019): 1805. http://dx.doi.org/10.3390/ijerph16101805.

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Pavements have remarkable effects on topsoil micro-organisms, but it remains unclear how subsoil microbial communities respond to pavements. In this study, ash trees (Fraxinus Chinensis) were planted on pervious pavement (PP), impervious pavement (IPP), and non-pavement (NP) plots. After five years, we determined the soil bacterial community composition and diversity by high-throughput sequencing of the bacterial 16S rRNA gene. The results of our field experiment reveal that the presence of pavement changed soil bacterial community composition and decreased the Shannon index, but had no impact on the Chao 1 at the 0–20 cm layer. However, we achieved the opposite result at a depth of 20–80 cm. Furthermore, there was a significant difference in bacterial community composition using the Shannon index and the Chao 1 at the 80–100 cm layer. Soil total carbon (TC), total nitrogen (TN), available phosphorus (AP), NO3−-N, and available potassium (AK) were the main factors that influenced soil bacterial composition and diversity across different pavements. Soil bacterial composition and diversity had no notable difference between PP and IPPs at different soil layers. Our results strongly indicate that pavements have a greater impact on topsoil bacterial communities than do subsoils, and PPs did not provide a better habitat for micro-organisms when compared to IPPs in the short term.

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Golroo, Amir, i Susan L. Tighe. "Pervious concrete pavement performance modeling: an empirical approach in cold climates". Canadian Journal of Civil Engineering 39, nr 10 (październik 2012): 1100–1112. http://dx.doi.org/10.1139/l2012-088.

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Pervious concrete pavement (PCP) is an appropriate means to meet growing environmental demands. To apply pervious concrete as a pavement, its performance should be studied over its life span. This research aims to develop empirical performance models based on a proposed condition index through incorporation of integrated laboratory and field work. Since no condition index has been developed for PCP to date, first, a condition index is developed. The condition index is proposed as a combination of two indices: a surface distress index and a functional performance index. Two sources of data have been collected to develop performance models including panel rating and field investigations. Performance models are developed in two phases using regression analysis techniques. In phase I, performance models are presented as functions of a surface distress index and a functional performance index, while in phase II, performance models are correlated with pavement age and successfully validated.

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Chen, Lu-Ming, Jui-Wen Chen, Ting-Hao Chen, Timothy Lecher i Paul Davidson. "Measurement of Permeability and Comparison of Pavements". Water 11, nr 3 (2.03.2019): 444. http://dx.doi.org/10.3390/w11030444.

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Permeable pavements have the ability to reduce surface runoff by allowing water to infiltrate into the underlying soil. The potential of permeable pavements to assist in managing stormwater and improve water quality has gained attention as an option, other than conventional impermeable concrete for paving purposes. This study examined the permeability of three different pavement systems, including the JW Eco-technology pavement (JW), which has not previously been installed or studied in the U.S., standard impermeable concrete (IC), and pervious concrete (PC). Each pavement type was installed in triplicate. Devices based on the ASTM C1701/C1701M and ASTM C1781/C1781M constant-head methods, the National Center for Asphalt Technology (NCAT) falling-head permeameter, and two new square frames, SF-4 and SF-9, modified to fit the JW pavement, were utilized for permeability measurement on several locations of each pavement system. The results showed that the JW Eco-technology pavement had comparable permeability to the commonly used PC pavement in each method used. In addition, there was a strong correlation between the permeability measurements of NCAT method and SF-4, and between the ASTM standard and SF-9. The square frames used in this study showed their effectiveness and efficiency in performing permeability measurements. It was also found that the permeability obtained had a pronounced difference in values between the falling head and the constant head methods, with an average ratio ranging from 4.08–6.36.

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El-Hassan, Hilal, i Peiman Kianmehr. "Pervious concrete pavement incorporating GGBS to alleviate pavement runoff and improve urban sustainability". Road Materials and Pavement Design 19, nr 1 (10.11.2016): 167–81. http://dx.doi.org/10.1080/14680629.2016.1251957.

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Geng, Haining, Qing Xu, Saiful B. Duraman i Qiu Li. "Effect of Rheology of Fresh Paste on the Pore Structure and Properties of Pervious Concrete Based on the High Fluidity Alkali-Activated Slag". Crystals 11, nr 6 (24.05.2021): 593. http://dx.doi.org/10.3390/cryst11060593.

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Pervious concrete is made of cementitious materials, coarse aggregate, water and additives, with characteristic macro- and meso-connected pore structure, which enables the acceptable mechanical properties and high water permeability for pavement and road applications. In this study, the effect of rheology of fresh alkali-activated slag paste on the sedimentation of paste on the bottom of pervious concrete, meso-structure, connected porosity, mechanical properties and water permeability was investigated by a range of analytical techniques through varying the equivalent alkali content to control the rheology of fresh paste in the pervious concrete. The compressive strength of pervious concrete was related to the percentage area of paste and the average thickness of paste on the surface of coarse aggregate. The tensile strength and water permeability were correlated to the connected porosity of pervious concrete and the rheology of fresh paste. A relative lower fluidity, higher viscosity and shear stress of fresh alkali-activated slag paste favoured lower sedimentation of paste on the bottom of pervious concrete, higher connected porosity, tensile strength and water permeability. There was no correlation between compressive strength and tensile strength of pervious concrete.

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Pilon, Brent, John Tyner, Daniel Yoder i John Buchanan. "The Effect of Pervious Concrete on Water Quality Parameters: A Case Study". Water 11, nr 2 (2.02.2019): 263. http://dx.doi.org/10.3390/w11020263.

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Stormwater is a leading source of pollutants that when transported to surface waters may damage aquatic habitat, decrease reservoir capacity, and contaminate drinking water. In order to evaluate whether a pervious concrete detention system can remove stormwater pollutants from the runoff, water quality was monitored at a site with both impervious asphalt and pervious concrete parking areas. The stormwater flowed across asphalt pavement before infiltrating into the pervious concrete and an aggregate sub-base below. The runoff was sampled exiting the asphalt but prior to entering the pervious concrete, and after it passed through the pervious concrete detention system, representing pre- and post-treatment sampling. Results showed statistically significant (p < 0.05) decreases in concentrations of total suspended solids, nitrite, chemical oxygen demand, and polycyclic aromatic hydrocarbons compared to untreated asphalt runoff. Zinc concentrations were apparently reduced, but not quite to statistically significant levels (p = 0.054). Values of pH and sulfate both showed statistically significant (p < 0.05) increases.

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Marcaida, Aryssa, Tan Nguyen i Jaehun Ahn. "Investigation of Particle-Related Clogging of Sustainable Concrete Pavements". Sustainability 10, nr 12 (19.12.2018): 4845. http://dx.doi.org/10.3390/su10124845.

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Permeable pavement has been considered an effective low impact development (LID) strategy in attempts to mitigate the environmental impacts of natural surface depletion brought about by urbanization. A concern associated with the pavement’s hydraulic performance is its sensitivity to clogging. This study aims to investigate the permeability reduction due to particle-related clogging of pervious concrete (PC), a type of sustainable pavement surface. Permeability tests revealed that the flow within PC samples shows turbulence, and a nonlinear relationship between discharge velocity and hydraulic gradient is necessary to measure the permeability coefficient. Permeability loss due to particle-clogging is influenced by the size of both PC aggregates and clogging particles. Clogging with graded sand particles causes more severe reduction compared to single-sized sands.

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42

Saaly, Maryam, Mohammad Mostafa Hedayat i Amir Golroo. "Performance of pervious concrete pavement under various raining conditions". Road Materials and Pavement Design 20, nr 7 (1.06.2018): 1653–63. http://dx.doi.org/10.1080/14680629.2018.1474791.

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Yang, Jing, i Guoliang Jiang. "Experimental study on properties of pervious concrete pavement materials". Cement and Concrete Research 33, nr 3 (marzec 2003): 381–86. http://dx.doi.org/10.1016/s0008-8846(02)00966-3.

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Maguesvari, M. Uma, i V. L. Narasimha. "Studies on Characterization of Pervious Concrete for Pavement Applications". Procedia - Social and Behavioral Sciences 104 (grudzień 2013): 198–207. http://dx.doi.org/10.1016/j.sbspro.2013.11.112.

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Zhang, Jiong, Xinzhuang Cui, Weize Tang i Junjie Lou. "Approximate simulation of storm water runoff over pervious pavement". International Journal of Pavement Engineering 18, nr 3 (24.07.2015): 247–59. http://dx.doi.org/10.1080/10298436.2015.1065993.

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Lee, M. G., T. Huang, Y. Huang, C. P. Peng i Y. M. Su. "Preliminary Study of Pervious Concrete on Pavement and Seawall". Journal of Testing and Evaluation 45, nr 1 (26.09.2016): 20160156. http://dx.doi.org/10.1520/jte20160156.

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Golroo, Amir, i Susan L. Tighe. "Alternative modeling framework for pervious concrete pavement condition analysis". Construction and Building Materials 25, nr 10 (październik 2011): 4043–51. http://dx.doi.org/10.1016/j.conbuildmat.2011.04.040.

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Avinash, Lakshmireddygari, Pothireddy Adarsh Reddy i S. S.Vivek. "Study on Strength Characteristics of Pervious Concrete Using Mineral Admixtures". International Journal of Engineering & Technology 7, nr 3.12 (20.07.2018): 612. http://dx.doi.org/10.14419/ijet.v7i3.12.16439.

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Pervious concrete is a special type of concrete emerged out in the concrete world. It is referred as porous concrete or no fines concrete. The porous concrete has wide applications in the pavement with low traffic intensity, sidewalks, pathways, platforms, parking lots etc. Since the pervious concrete allows the groundwater replenishment and prevents the pool of water standing on the earth surface during rainfall-runoff, it helps in the stormwater management. In the present work, the partial replacement of cement with silica fume (SF) and metakaolin (MK) as mineral admixtures to an extent from 10 to 30 % by varying water-cement (w/c) ratio from 0.36 to 0.40 was done to study the effect on the performance of pervious concrete. From the results, an optimum w/c ratio was found to be as 0.38 along with 1.5% of the superplasticizer. The experimental results reveal that the compressive strength of pervious concrete containing mineral admixtures was found to be better than the compressive strength of conventional pervious concrete. Among three different percentage of substitutes used, 20% was found to be an optimum value in both the cases. Pervious concrete with SF as admixture exhibited better strength among the two admixtures..

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Bezerra, Natália Martins. "Tests of pervious concrete as learning tool Comparative Study About: Evolution of the Trait, Methods and Complementary Analysis". International Journal on Alive Engineering Education 6 (6.12.2019): 107–28. http://dx.doi.org/10.5216/ijaeedu.v6.59576.

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The execution of pervious concrete pavements has been used over the years as a pedagogical resource in the Civil Engineering course at UNEMAT - Universidade do Estado de Mato Grosso, campus of Tangará da Serra – MT – Brazil. With the purpose of aggregating scientific knowledge to the academics, providing advances in the technique used in the production of pervious concrete, as well to the development of the University's physical space. In this article, some of these studies will be presented in order to discuss the scientific observations made by academics in the development of practices and to evaluate the evolution in the methodologies of trait and execution. The characteristic that allow water infiltration has made porous concrete chosen to remedy problems due to the accumulation of water at several points on campus. In addition, another necessity was to promote the interconnection between classroom blocks. The works were evaluated taking into account the reports developed by the academics during the activities. In this analysis, the advancement of the techniques employed even when the students did not have the appropriate equipment. It was possible to observe modifications in the techniques of staining the concrete and the level of difficulty of the drainage process involved. The results were discussed in view of both the evolution of the technique of preparation of the pervious concrete pavement by the academics, as well as the practice as a didactic and social resource. Recently, besides the permeability, the thermal properties of porous concrete have also begun to be explored. Would the pervious concrete pavements has betters thermal performance than the conventional ones? In the state of Mato Grosso for presenting high annual average temperatures if, the pervious pavements contributes to a lower heat retention compared to the conventional one, this would show an excellent alternative for the substitution of the conventional pavements, prioritizing the thermal comfort of the academic community. Because of that, a comparative analysis was performed between the temperature values recorded in the porous pavements, in the conventional and green areas of the campus. The methodology of this research consisted in performance of temperature measurements with an infrared thermometer, the measurements was for 20 days distributed in four months, four times per day (8 a.m., 11 a.m., 5 p.m., and 7 p.m.). The rainy season in the region caused some variations in the results, since conventional concrete, when moist, takes longer to lose this moisture and absorb heat. The colors chosen in the painting also influenced results, because, in the pavements that the pervious concrete was not painted, showed lower temperatures than the conventional. The development of activities related to the analysis and production of pervious concrete contribute to the academic training of students of the Civil Engineering course on two fronts: obtaining technical knowledge and capacity for teamwork, exploring all the basic procedures of the routine of a real work.

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Lee, Ming Gin, Wen Cheng Wang, Yung Chih Wang, Yao Tung Hsieh i Tuz Yuan Huang. "Preliminary Study of Fire Damage on Pervious Concrete with Silica Fume and Steel Fiber". Key Engineering Materials 880 (marzec 2021): 155–60. http://dx.doi.org/10.4028/www.scientific.net/kem.880.155.

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Pervious concrete pavement is a porous urban surface. It could reduce runoff capacity, decrease a storm-water detention, reduce the amount of requiring rain drainage pipes, and let rainwater filter into ground and allow groundwater resources to renew in time. Fire damage, could be one of important factors since European countries have been used pervious concrete in buildings construction. This study was conducted to assess the fire damage on pervious concrete with silica fume and steel fiber. The test results find that pervious concrete with 10% silica fume and 2% steel fibers showed the maximum increase in compressive and flexural strengths by 60% and 23% respectively over the control mix while maintaining adequate permeability. It also shows that the flexural strength of pervious concrete with 10% silica fume and 2% steel fiber could reach 45 kg/cm2 strength specification. The high temperature exposure results find that pervious concrete could hardly be detected any crack at the temperature of 700 °Cor 800°C and fire duration of 2 hours. There is some damage on strength after the fire-attack test, the ratio of the residual strength can range from about 20%~60% and it depends on temperature, steel fiber, and silica fume content. By this study of pervious concrete will be valuable for fire safety design and construction of practice.

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