Relevant bibliographies by topics / High strength concrete Fire-testing

Academic literature on the topic 'High strength concrete Fire-testing'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "High strength concrete Fire-testing"

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Liu, Feng, Gui Xuan Chen, and Li Juan Li. "Performance of Rubberized High Strength Concrete after Fire." Advanced Materials Research 163-167 (December 2010): 1403–8. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1403.

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The effects of recycled rubber powder on working abilities, density and compressive strength of high strength concrete (HSC) at room temperature were studied in this paper. The characteristics of rubberized high strength concrete (RHSC) after fire was investigated by surface observation, weight loss and retained strength testing. The sieve number of rubber powder used in test is No.40 (420μm), No.60 (250µm) and No.80 (178µm), and the content of rubber powder filled in RHSC is 1%, 2%, 3% and 4% with respect to cementation material respectively. Test results show that the increase in rubber powder content reduces the concrete strength, while the decrease in compressive strength of RHSC is less than 10% when the content of rubber powder is within 2%. RHSC with small content of rubber (1%) can restrain the spalling failure of concrete under high temperature.
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Kwon, Ki Seok, Heung Youl Kim, Seung Un Chae, and Bum Yean Cho. "A Study on the Collapse Mechanism of High Strength Concrete Columns Apply to Fiber-Cocktail." Applied Mechanics and Materials 784 (August 2015): 385–90. http://dx.doi.org/10.4028/www.scientific.net/amm.784.385.

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More high-rise structures are currently being constructed and correspondingly, the compressive strength of concrete has been increased. However, compared to conventional strength concrete the high strength concrete (HSC) exhibits coarse inner pore structure which blocks escape routes of vapour generated in the event of fire. This results in spalling and subsequently, are responsible for fire vulnerability of the structure. In addition, spalling phenomena is also affected by the section dimensions of HSC which is also another crucial factor from socio-economic considerations. Thus, this study was carried out to evaluate the fire resistance performance of hybrid fiber (i.e. steel-polypropylene-fibre)-reinforced HSC columns with different cross-section dimensions. The result of the fire resistance performance testing using 100MPa concrete showed that delay to failure was observed by approximately 76 per cent.
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Shallal, Muhaned A., and Aqil Mousa K. Al Musawi. "Tests of Residual Shear Transfer Strength of Concrete Exposed to Fire." Archives of Civil Engineering 64, no. 2 (December 31, 2018): 187–99. http://dx.doi.org/10.2478/ace-2018-0024.

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AbstractReinforced concrete is one of the most widely used structural components about which much scientific research has been conducted; however, some of its characteristics still require further research. The main focus of this study is the effect of direct fire on the shear transfer strength of concrete. It was investigated under several parameters including concrete strength, number of stirrup legs (the steel area across the shear plane), and fire duration. The experimental program involved the testing of two sets (groups) of specimens (12 specimens each) with different concrete strengths. Each set contained specimens of two or four stirrup legs exposed to direct fire from one side (the fire was in an open area to simulate a real-life event) for a duration of one, two, and three hours. The results of the comparison showed the importance of using high-performance concrete (instead of increasing the number of stirrup legs) to resist shear stress for the purpose of safety. A significant reduction in shear strength occurred due to the deterioration of the concrete cover after three hours of direct fire exposure.
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Lin, Ching Chang, Cheng Hou Liu, and Cho Liang Tsai. "Study on the Behaviors of CFRP Confining Concrete Specimens Exposed to Fire, Acid and Alkaline Environments." Applied Mechanics and Materials 147 (December 2011): 32–36. http://dx.doi.org/10.4028/www.scientific.net/amm.147.32.

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This paper studies the behaviors of carbon fiber reinforced plastics (CFRP) confining concretes exposed to fire, acid or alkaline environments. The concrete specimens wrapped with CFRP were exposed to different high temperatures or submerged to acid or alkaline solutions with different concentrations. All the specimens were then loaded under uni-axial compression test. The strength and ductility of concrete specimen were evaluated. The environmental influences on the confining effects of CFRP were also investigated. The results indicate that CFRP reinforcements can provide good confinements for concrete specimens, so both the strength and ductility of concrete specimens can be significantly increased. But CFRP confining concrete specimens exposed to fire environments over 300°C will lose some of the confinements and the strength and ductility are significantly decreased. When adhered by fireproof material, CFRP confining concrete specimens exposed to fire environments will not lose all the confinements and still retain most of their original strengths and strains. The fireproof material can really protect CFRP confining concretes from high temperatures. The fire resistance effect of fireproof material depends on its thicknesses and the fire environments. The results also show that CFRP confining concrete specimens when submerged into acid or alkaline environments will lose some of the confining effect of CFRP. The higher the concentration or the longer the soaking period of acid or alkaline environments, the more the CFRP material is damaged and thus CFRP confining concrete specimens lose some of their strenghs.
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Kodur, Venkatesh KR. "Innovative strategies for enhancing fire performance of high-strength concrete structures." Advances in Structural Engineering 21, no. 11 (January 19, 2018): 1723–32. http://dx.doi.org/10.1177/1369433218754335.

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High-strength concrete is being increasingly used in a number of building applications, where structural fire safety is one of the primary design considerations. Many research studies clearly indicate that the fire performance of high-strength concrete is different from that of normal-strength concrete and that high-strength concrete may not exhibit same level of performance as normal-strength concrete under fire conditions. This article outlines key characteristics that influence the performance of high-strength concrete structural members under fire conditions. Data generated in previous experimental and numerical studies are utilized to illustrate various factors that influence fire performance of high-strength concrete structural members. Based on the published data, observations and trends on the behavior of high-strength concrete members, innovative strategies for mitigating spalling and enhancing fire resistance of high-strength concrete structural members are proposed.
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Kodur, VKR. "Performance of high strength concrete-filled steel columns exposed to fire." Canadian Journal of Civil Engineering 25, no. 6 (December 1, 1998): 975–81. http://dx.doi.org/10.1139/l98-023.

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Results from an experimental program on the behaviour of high strength concrete-filled steel hollow structural section (HSS) columns will be presented for three types of concrete filling. A comparison will be made of the fire-resistance performance of HSS columns filled with normal strength concrete, high strength concrete, and steel-fibre-reinforced high strength concrete. The various factors that influence the structural behaviour of high strength concrete-filled HSS columns under fire conditions are discussed. It is demonstrated that, in many cases, addition of steel fibres into high strength concrete improves the fire resistance and offers an economical solution for fire-safe construction.Key words: high strength concrete, steel columns, fire-resistance design, high-temperature behaviour, concrete-filled steel columns.
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Choi. "Fire resistance assessment of high strength segment concrete depending on PET fiber amount under fire curves." Journal of Korean Tunnelling and Underground Space Association 16, no. 3 (2014): 311. http://dx.doi.org/10.9711/ktaj.2014.16.3.311.

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Nguyen, Kate TQ, Tuan Ngo, Priyan Mendis, and David Heath. "Performance of high-strength concrete walls exposed to fire." Advances in Structural Engineering 21, no. 8 (September 26, 2017): 1173–82. http://dx.doi.org/10.1177/1369433217732500.

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High-strength concrete is becoming very popular around the world due to its many advantages over normal-strength concrete. There are significant behavioural differences between high-strength concrete and normal-strength concrete, most notably the brittleness and sudden spalling under elevated temperatures, whereby pieces of hardened concrete explosively dislodge. Although all high-rise and even many medium-rise buildings have high-strength concrete walls, the spalling of high-strength concrete walls in fire has generally been ignored by the designers and the fire resistance of walls has been calculated using the rules specified for normal-strength concrete. Catastrophic failures could occur due to this ignorance of an important issue. Major design codes including the American and Australian Codes do not cover spalling adequately. Even the Eurocode rules are based on limited research. After a brief discussion on the present design practice, this article presents a summary of spalling research. The relevant results from a comprehensive study conducted at the University of Melbourne are briefly discussed. The authors are not aware of any other comprehensive research projects covering the fire behaviour of normal-strength concrete and high-strength concrete walls exposed not only to standard fires but also hydrocarbon fires. The results showed that spalling in high-strength concrete is more significant when subjected to hydrocarbon fire compared to normal-strength concrete. The level of compressive load on the panels was also found to have a significant effect on the fire performance of the high-strength concrete panels. The finite analysis element program, ANSYS, was used to model the concrete walls subjected to load and fire (both ISO834 Standard fire and hydrocarbon fire). The test results were used to validate the computer model.
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Razak, Siti Nooriza Abd, Nasir Shafiq, Laurent Guillaumat, Mohamed Mubarak Abdul Wahab, Syed Ahmad Farhan, Nadzhratul Husna, and Fouad Ismail Ismail. "Effect of Heating Duration at High Temperature on the Strength and Integrity of Fly Ash-Based Geopolymer Concrete." IOP Conference Series: Earth and Environmental Science 945, no. 1 (December 1, 2021): 012063. http://dx.doi.org/10.1088/1755-1315/945/1/012063.

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Abstract Fire is one of the most severe environmental conditions that concrete structures might be subjected to, especially in closed conduct structures, such as tunnels. Concrete in general can withstand fire but its properties degrade when exposed to fire at high temperatures. The effect of heating duration, at a high temperature, on the performance of fly ash-based geopolymer concrete is presented. Cubes of low, medium and high strength grades of geopolymer concrete that had been cured for 28 days, were exposed to a fire flame at 1000 °C for 30, 60, 90, 120, 150 and 180 min. After the fire exposure, the cubes were cooled to the ambient temperature before further testing. A visual observation was performed on the cubes to detect any colour change, cracking and spalling. The losses of mass and residual compressive strength of the cubes were recorded. The results showed that as the heating duration increased from 30 to 90 min, the compressive strength of the cubes also increased. Contrarily, the compressive strength decreased as the heating duration increased beyond 90 min indicating that the extended heating duration induced the loss of free water and decomposition of aluminosilicate products in geopolymer concrete. The evaporation of water by virtue of the heating for the extended duration, at high temperature, led to a loss in the mass of concrete. The findings suggest that geopolymer concrete was able to sustain its structural integrity without any noticeable spalling and hence, it can be classified as a fire-resistant material.
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Hager, Izabela, and Katarzyna Mróz. "Role of Polypropylene Fibres in Concrete Spalling Risk Mitigation in Fire and Test Methods of Fibres Effectiveness Evaluation." Materials 12, no. 23 (November 23, 2019): 3869. http://dx.doi.org/10.3390/ma12233869.

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The explosive behaviour of concrete in fire is observed in rapidly heated concrete. The main factors controlling the occurrence of spalling are related to the material’s low porosity and high density as well as the limited ability to transport gases and liquids. Thus, for high-strength, ultrahigh-strength, and reactive powder concrete, the risk of spalling is much higher than for normal-strength concrete. The paper presents the discussion on the leading hypothesis concerning the occurrence of concrete spalling. Moreover, the methods for spalling prevention, such as polypropylene fibre application, which has been found to be an effective technological solution for preventing the occurrence of spalling, are presented. Various tests and testing protocols are used to screen concrete mixes propensity toward spalling and to evaluate the polypropylene fibres’ effectiveness in spalling risk mitigation. The most effective testing methods were selected and their advantages were presented in the paper. The review was based mainly on the authors’ experiences regarding high performance concrete, reactive powder concrete testing, and observations on the effect of polypropylene fibres on material behaviour at high temperature.
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Dissertations / Theses on the topic "High strength concrete Fire-testing"

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Mitchell, Andrew Douglass. "Shear friction behavior of high-strength concrete." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/19274.

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Ezekiel, Samson. "Fire resistance simulation for high strength reinforced concrete." Thesis, London South Bank University, 2015. http://researchopen.lsbu.ac.uk/2084/.

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High strength reinforced concrete (HSRC) has been used more frequently in the construction of high rise buildings and other concrete structures in recent decades due to its advantages and excellent performance over normal strength and conventional reinforced concrete. Some of these advantages include: higher strength, better durability and allowance for provision of using less concrete and smaller section sizes. Although HSRC performs better than normal strength reinforced concrete (NSRC) at ambient temperatures, NSRC has been found to perform better than HSRC at elevated temperatures and fire conditions. Provision of adequate fire resistance for reinforced concrete (RC) structures is essential as fire represents an extreme loading and hazardous condition to which a structure might be exposed during its life span. The fire resistance of RC members is evaluated using a prescriptive approach which is irrational and conservative. Current codes of practice and construction in industry are moving towards performance based fire design method with computing software, which is a rationally based method with each structure designed to meets its own need. This method requires comprehensive knowledge and modelling of concrete and reinforcement material behaviour and their response at elevated temperatures. The fire resistance of HSRC members (columns and beams) in this study was evaluated using a three-dimensional Finite Element (FE) model created in ANSYS. The stress – strain behaviour of concrete proposed in this research was used in modelling the behaviour of concrete in ANSYS, while other concrete and steel material properties were accounted for by using models proposed by other researchers. The fire resistance of the HSRC members is evaluated using coupled field analysis (thermal – structural analysis) with performance based failure criteria provided in the code of practice. The accuracy of the FE model was verified by comparing the thermal response, structural response and predicted fire resistance with fire test results obtained. Using the validated FE model, parametric studies were conducted to investigate the influence of various parameters affecting the fire performance of HSRC members exposed to fire. From the parametric studies conducted, simplified calculation models were developed for evaluating the resistance of HSRC members (columns and beams) exposed to fire. These models were validated with results from ANSYS and a fire resistance test. The simple model accounts for major factors such as member size, load ratio and fire scenario, and therefore can be easily incorporated into structural design. The FE model and simple calculation model provide a rational approach for evaluating the fire resistance of HSRC (members) and predict a more accurate fire resistance than the prescriptive approach.
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Zaina, Mazen Said Civil &amp Environmental Engineering Faculty of Engineering UNSW. "Strength and ductility of fibre reinforced high strength concrete columns." Awarded by:University of New South Wales. School of Civil and Environmental Engineering, 2005. http://handle.unsw.edu.au/1959.4/22054.

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The main structural objectives in column design are strength and ductility. For higher strength concretes these design objectives are offset by generally poor concrete ductility and early spalling of the concrete cover. When fibres are added to the concrete the post peak characteristics are enhanced, both in tension and in compression. Most of the available experimental data, on fibre reinforced concrete and fibre reinforced high strength concrete columns, suggest that an improvement in both ductility and load carrying capacity due to the inclusion of the fibres. In this thesis the ductility and strength of fibre reinforced high strength concrete are investigated to evaluate the effect of the different parameters on the performance of columns. The investigation includes both experimental and the numerical approaches with 56 high strength fibre reinforced concrete columns being tested. The concrete strength ranged between 80 and 100 MPa and the columns were reinforced with 1, 2 or 2.6 percent, by weight, of end hooked steel fibres. The effect of corrugated Polypropylene fibres on the column performance was also examined. No early spalling of the cover was observed in any of the steel fibre reinforced column tested in this study. A numerical model was developed for analysis of fibre and non-fibre reinforced eccentrically loaded columns. The column is modelled as finite layers of reinforced concrete. Two types of layers are used, one to represent the hinged zone and the second the unloading portion of the column. As the concrete in the hinged layers goes beyond the peak for the stress verus strain in the concrete the section will continue to deform leading to a localised region within a column. The numerical model is compared with the test data and generally shows good correlation. Using the developed model, the parameters that affect ductility in fibre-reinforced high strength concrete columns are investigated and evaluated. A design model relating column ductility with confining pressure is proposed that includes the effects of the longitudinal reinforcement ratio, the loading eccentricity and the fibre properties and content and design recommendations are given.
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Yosefani, Anas. "Flexural Strength, Ductility, and Serviceability of Beams that Contain High-Strength Steel Reinforcement and High-Grade Concrete." PDXScholar, 2018. https://pdxscholar.library.pdx.edu/open_access_etds/4402.

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Utilizing the higher capacity steel in design can provide additional advantages to the concrete construction industry including a reduction of congestion, improved concrete placement, reduction in the required reinforcement and cross sections which would lead to savings in materials, shipping, and placement costs. Using high-strength reinforcement is expected to impact the design provisions of ACI 318 code and other related codes. The Applied Technology Council (ATC-115) report "Roadmap for the Use of High-Strength Reinforcement in Reinforced Concrete Design" has identified key design issues that are affected by the use of high-strength reinforcement. Also, ACI ITG-6, "Design Guide for the Use of ASTM A1035 Grade 100 Steel Bars for Structural Concrete" and NCHRP Report 679, "Design of Concrete Structures Using High-Strength Steel Reinforcement" have made progress towards identifying how code provisions in ACI 318 and AASHTO could be changed to incorporate high-strength reinforcement. The current research aims to provide a closer investigation of the behavior of beams reinforced with high-strength steel bars (including ASTM A615 Grade 100 and ASTM A1035 Grades 100 and 120) and high-strength concrete up to 12000 psi. Focus of the research is on key design issues including: ductility, stiffness, deflection, and cracking. The research includes an extensive review of current literature, an analytical study and conforming experimental tests, and is directed to provide a number of recommendations and design guidelines for design of beams reinforced with high-strength concrete and high-strength steel. Topics investigated include: strain limits (tension-controlled and compression-controlled, and minimum strain in steel); possible change for strength reduction factor equation for transition zone (Φ); evaluation of the minimum reinforcement ratio (þmin); recommendations regarding limiting the maximum stress for the high-strength reinforcement; and prediction of deflection and crack width at service load levels. Moreover, this research includes long-term deflection test of a beam made with high grade concrete and high-strength steel under sustained load for twelve months to evaluate the creep deflection and to insure the appropriateness of the current ACI 318 time-dependent factor, λ, which does not consider the yield strength of reinforcement and the concrete grade.
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Dabbagh, Hooshang Civil &amp Environmental Engineering Faculty of Engineering UNSW. "Strength and ductility of high-strength concrete shear walls under reversed cyclic loading." Awarded by:University of New South Wales. School of Civil and Environmental Engineering, 2005. http://handle.unsw.edu.au/1959.4/27467.

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This study concerns the strength and behaviour of low-rise shear walls made from high-strength concrete under reversed cyclic loading. The response of such walls is often strongly governed by the shear effects leading to the shear induced or brittle failure. The brittle nature of high-strength concrete poses further difficulties in obtaining ductile response from shear walls. An experimental program consisting of six high-strength concrete shear walls was carried out. Specimens were tested under inplane axial load and reversed cyclic displacements with the test parameters investigated being longitudinal reinforcement ratio, transverse reinforcement ratio and axial load. Lateral loads, lateral displacements and the strains of reinforcement in edge elements and web wall were measured. The test results showed the presence of axial load has a significant effect on the strength and ductility of the shear walls. The axially loaded wall specimens exhibited a brittle behaviour regardless of reinforcement ratio whereas the specimen with no axial load had a lower strength but higher ductility. It was also found that an increase in the longitudinal reinforcement ratio gave an increase in the failure load while an increase in the transverse reinforcement ratio had no significant effect on the strength but influenced the failure mode. A non-linear finite element program based on the crack membrane model and using smeared-fixed crack approach was developed with a new aggregate interlock model incorporated into the finite element procedure. The finite element model was corroborated by experimental results of shear panels and walls. The finite element analysis of shear wall specimens indicated that while strengths can be predicted reasonably, the stiffness of edge elements has a significant effect on the deformational results for two-dimensional analyses. Therefore, to capture the deformation of walls accurately, three-dimensional finite element analyses are required. The shear wall design provisions given in the current Australian Standard and the Building Code of American Concrete Institute were compared with the experimental results. The comparison showed that the calculated strengths based on the codes are considerably conservative, specially when there exists the axial load.
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Meyer, Karl F. "Transfer and development length of 06-inch diameter prestressing strand in high strength lightweight concrete." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/20727.

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Islam, Md Shahidul. "Shear capacity and flexural ductility of reinforced high- and normal-strength concrete beams." Thesis, Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1766536X.

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Reutlinger, Christopher George. "Direct pull-out capacity and transfer length of 06-inch diameter prestressing strand in high-performance concrete." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/19026.

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Shams, Mohamed Khalil. "Time-dependent behavior of high-performance concrete." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/20682.

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Chau, Siu-lee, and 周小梨. "Effects of confinement and small axial load on flexural ductility of high-strength reinforced concrete beams." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B31997661.

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Books on the topic "High strength concrete Fire-testing"

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Vares, Sirje. Fibre-reinforced high-strength concrete. Espoo, Finland: Technical Research Centre of Finland, 1993.

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Ibrahim, Hisham H. H. Flexural behavior of high strength concrete columns. Edmonton, Alta: Dept. of Civil Engineering, University of Alberta, 1994.

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Philleo, Robert E. Freezing and thawing resistance of high-strength concrete. Washington, D.C: Transportation Research Board, National Research Council, 1986.

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Masad, Eyad. Implementation of high performance concrete in Washington state. [Olympia, Wash.]: Washington State Dept. of Transportation, 2001.

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Alca, Nedim. Effect of size on flexural behaviour of high-strength concrete beams. Edmonton, Alta: Dept. of Civil Engineering, University of Alberta, 1993.

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Carrasquillo, P. M. Guidelines for use of high strength concrete in Texas highways. Austin, Tex: Center for Transportation Research, Bureau of Engineering Research, University of Texas at Austin, 1986.

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Farrington, Erik Wayne. Creep and shrinkage of high performance concrete. [Austin]: Center for Transportation Research, Bureau of Engineering Research, University of Texas at Austin, 1996.

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USA-Australia Workshop on High Performance Concrete (1997 Sydney, N.S.W.). Proceedings of the USA-Australia Workshop on High Performance Concrete (HPC), Sydney, Australia, August 20-23, 1997. Perth, W.A: Curtin University of Technology, School of Civil Engineering, 1997.

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Byle, Kenneth Arlan. Time-dependent deformation behavior of prestressed high performance concrete bridge beams. [Austin, Tex.]: Center for Transportation Research, Bureau of Engineering Research, University of Texas at Austin, 1998.

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Phan, L. T. Fire performance of high strength concrete: A report of the state-of-the-art. Gaithersburg, Md: National Institute of Standards and Technology, 1996.

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Book chapters on the topic "High strength concrete Fire-testing"

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Chiew, Sing-Ping, and Yan-Qing Cai. "Fire design." In Design of High Strength Steel Reinforced Concrete Columns, 73–81. Boca Raton : CRC Press, [2018]: CRC Press, 2018. http://dx.doi.org/10.1201/9781351203951-6.

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Terrasi, Giovanni P., Alex Stutz, Michel Barbezat, and Luke A. Bisby. "Fire Behaviour of CFRP Prestressed High Strength Concrete Slabs." In Advances in FRP Composites in Civil Engineering, 423–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17487-2_92.

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Yamashita, Heisuke, Toru Yoshida, and Takeo Hirashima. "Influence of Water Content on Total Strain of Super High-Strength Concrete Under Elevated Temperature." In Fire Science and Technology 2015, 289–97. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0376-9_29.

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Iwama, Keitai, Koichi Maekawa, and Kazuaki Highuchi. "Numerical Model for Explosive Spalling of High-Strength Concrete and Carbonation During and After Fire Exposure." In RILEM Bookseries, 160–69. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-07746-3_16.

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Jomaa’h, Muyasser M., Ali I. Salahaldin, Qahtan A. Saber, and Aram M. Raheem. "Large Scale Laboratory Setup for Testing Structural Performance of Slender High-Strength Concrete Columns Subjected to Axial Load and Fire: A Preliminary Study." In Geotechnical Engineering and Sustainable Construction, 611–26. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6277-5_49.

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Warwar, Raid S., and Abdulmuttalib I. Said. "Mechanical Properties of Normal Strength Concrete Covered with Gypsum Layers and Exposed to High Temperatures (Fire Flame)." In Geotechnical Engineering and Sustainable Construction, 641–56. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6277-5_51.

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Kalyana Rama, J. S., and B. S. Grewal. "Evaluation of Efficiency of Non-destructive Testing Methods for Determining the Strength of Concrete Damaged by Fire." In Advances in Structural Engineering, 2567–78. New Delhi: Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2187-6_198.

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Richard Liew, J. Y., Ming-Xiang Xiong, and Bing-Lin Lai. "Fire resistant design." In Design of Steel-Concrete Composite Structures Using High-Strength Materials, 85–124. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-823396-2.00003-4.

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Ghith, H. H., and M. Awad. "BEHAVIOUR OF HIGH STRENGTH REINFORCED CONCRETE BEAMS EXPOSED TO DIRECT FIRE." In Challenges of Concrete Construction: Volume 6, Concrete for Extreme Conditions, 585–94. Thomas Telford Publishing, 2002. http://dx.doi.org/10.1680/cfec.31784.0057.

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Bahr, O. "High strength concrete-filled tubular steel columns in fire." In Tubular Structures XII, 461–67. Taylor & Francis, 2008. http://dx.doi.org/10.1201/9780203882818.ch51.

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Conference papers on the topic "High strength concrete Fire-testing"

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"High Strength Concrete at High Temperature." In SP-255: Designing Concrete Structures for Fire Safety. American Concrete Institute, 2008. http://dx.doi.org/10.14359/20217.

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"High Temperature Properties of Fiber Reinforced High Strength." In SP-279: Innovations in Fire Design of Concrete Structures. American Concrete Institute, 2011. http://dx.doi.org/10.14359/51682966.

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"Fire Resistance of High-Strength Concretes for Offshore Concrete Platforms." In SP-163: Third CANMET/ACI International Conference on Performance of Concrete in Marine Environment. American Concrete Institute, 1996. http://dx.doi.org/10.14359/1345.

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Phan, Long T., and Nicholas J. Carino. "Fire Performance of High Strength Concrete: Research Needs." In Structures Congress 2000. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40492(2000)181.

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"Residual Lateral Load Capacity of a High Strength Reinforced Concrete Column after Fire Damage." In SP-293: Reinforced Concrete Columns with High Strength Concrete and Steel Reinforcement. American Concrete Institute, 2013. http://dx.doi.org/10.14359/51686241.

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Young, Ben, and Hai-Ting Li. "Post-fire mechanical properties of high strength steels." In 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.7222.

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High strength steels are becoming increasingly attractive for structural and architectural applications due to their superior strength-to-weight ratio which could lead to lighter and elegant structures. The stiffness and strength of high strength steels may reduce after exposure to fire. The post-fire mechanical properties of high strength steels have a crucial role in evaluating the residual strengths of these materials. This paper presents an experimental investigation on post-fire mechanical properties of cold-formed high strength steels. A series of tensile coupon tests has been carried out. The coupon specimens were extracted from cold-formed square hollow sections with nominal yield stresses of 700 and 900 MPa at ambient temperature. The specimens were exposed to various elevated temperatures ranged from 200 to 1000 °C and then cooled down to ambient temperature before tested to failure. Stress-strain curves were obtained and the mechanical properties, namely, Young’s modulus, yield stress (0.2% proof stress) and ultimate strength, of the cold-formed high strength steel materials after exposure to elevated temperatures were derived. The post-fire retention factors that obtained from the experimental investigation were compared with existing predictive equations in the literature. New predictive equations are proposed to determine the residual mechanical properties of high strength steels after exposure to fire. It is shown that the proposed predictive equations are suitable for both cold-formed and hot-rolled high strength steel materials with nominal yield stresses ranged from 690 to 960 MPa.
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"Effect of Heating and Cooling Regimes on Confined Concrete in High Strength Concrete Columns." In SP-279: Innovations in Fire Design of Concrete Structures. American Concrete Institute, 2011. http://dx.doi.org/10.14359/51682971.

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Raut, Nikhil, and Venkatesh Kodur. "Behavior of High Strength Concrete Columns under Design Fire Scenarios." In Structures Congress 2009. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41031(341)74.

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"Toughness of fiber-Reinforced High-Strength Concrete from Notched Beam Tests." In SP-155: Testing of Fiber Reinforced Concrete. American Concrete Institute, 1995. http://dx.doi.org/10.14359/927.

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"Microstructural Changes in High and Ultra High Strength Concrete Exposed to High Temperature Environments." In SP-229: Quality of Concrete Structures and Recent Advances in Concrete Materials and Testing. American Concrete Institute, 2005. http://dx.doi.org/10.14359/14743.

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Reports on the topic "High strength concrete Fire-testing"

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Phan, L. T. Fire performance of high-strength concrete:. Gaithersburg, MD: National Institute of Standards and Technology, 1996. http://dx.doi.org/10.6028/nist.ir.5934.

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Lagergren, Eric S. Effects of testing variables on the measured compressive strength of high-strength (90 MPa) concrete. Gaithersburg, MD: National Institute of Standards and Technology, 1994. http://dx.doi.org/10.6028/nist.ir.5405.

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QI, H., Y. DU, B. WANG, and R. Liew. STUDY ON TEMPERATURE DISTRIBUTION OF HIGH STRENGTH CONCRETE FILLED STEEL TUBULAR COLUMNS DUE TO FIRE. The Hong Kong Institute of Steel Construction, December 2018. http://dx.doi.org/10.18057/icass2018.p.165.

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Phan, Long T., and Richard D. Peacock. Experimental plan for testing the mechanical properties of high-strength concrete at elevated temperatures. Gaithersburg, MD: National Institute of Standards and Technology, 1999. http://dx.doi.org/10.6028/nist.ir.6210.

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Phan, Long T., Long T. Phan, Nicholas J. Cariono, Dat Duthinh, and Edward J. Garboczi. International Workshop on Fire Performance of High-Strength Concrete, NIST, Gaithersburg, MD, February 13-14, 1997. Gaithersburg, MD: National Institute of Standards and Technology, 1997. http://dx.doi.org/10.6028/nist.sp.919.

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Baral, Aniruddha, Jeffrey Roesler, M. Ley, Shinhyu Kang, Loren Emerson, Zane Lloyd, Braden Boyd, and Marllon Cook. High-volume Fly Ash Concrete for Pavements Findings: Volume 1. Illinois Center for Transportation, September 2021. http://dx.doi.org/10.36501/0197-9191/21-030.

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High-volume fly ash concrete (HVFAC) has improved durability and sustainability properties at a lower cost than conventional concrete, but its early-age properties like strength gain, setting time, and air entrainment can present challenges for application to concrete pavements. This research report helps with the implementation of HVFAC for pavement applications by providing guidelines for HVFAC mix design, testing protocols, and new tools for better quality control of HVFAC properties. Calorimeter tests were performed to evaluate the effects of fly ash sources, cement–fly ash interactions, chemical admixtures, and limestone replacement on the setting times and hydration reaction of HVFAC. To better target the initial air-entraining agent dosage for HVFAC, a calibration curve between air-entraining dosage for achieving 6% air content and fly ash foam index test has been developed. Further, a digital foam index test was developed to make this test more consistent across different labs and operators. For a more rapid prediction of hardened HVFAC properties, such as compressive strength, resistivity, and diffusion coefficient, an oxide-based particle model was developed. An HVFAC field test section was also constructed to demonstrate the implementation of a noncontact ultrasonic device for determining the final set time and ideal time to initiate saw cutting. Additionally, a maturity method was successfully implemented that estimates the in-place compressive strength of HVFAC through wireless thermal sensors. An HVFAC mix design procedure using the tools developed in this project such as the calorimeter test, foam index test, and particle-based model was proposed to assist engineers in implementing HVFAC pavements.
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Moser, Robert, Preet Singh, Lawrence Kahn, Kimberly Kurtis, David González Niño, and Zackery McClelland. Crevice corrosion and environmentally assisted cracking of high-strength duplex stainless steels in simulated concrete pore solutions. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41620.

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This paper presents a study of crevice corrosion and environmentally assisted cracking (EAC) mechanisms in UNS S32205 and S32304 which were cold drawn to tensile strengths of approximately 1300 MPa. The study utilized a combination of electrochemical methods and slow strain rate testing to evaluate EAC susceptibility. UNS S32205 was not susceptible to crevice corrosion in stranded geometries at Cl⁻ concentrations up to 1.0 M in alkaline and carbonated simulated concrete pore solutions. UNS S32304 did exhibit a reduction in corrosion resistance when tested in a stranded geometry. UNS S32205 and S32304 were not susceptible to stress corrosion cracking at Cl⁻ concentrations up to 0.5 M in alkaline and carbonated solutions but were susceptible to hydrogen embrittlement with cathodic overprotection.
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Sparks, Paul, Jesse Sherburn, William Heard, and Brett Williams. Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41963.

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Terminal ballistics of concrete is of extreme importance to the military and civil communities. Over the past few decades, ultra‐high performance concrete (UHPC) has been developed for various applications in the design of protective structures because UHPC has an enhanced ballistic resistance over conventional strength concrete. Developing predictive numerical models of UHPC subjected to penetration is critical in understanding the material's enhanced performance. This study employs the advanced fundamental concrete (AFC) model, and it runs inside the reproducing kernel particle method (RKPM)‐based code known as the nonlinear meshfree analysis program (NMAP). NMAP is advantageous for modeling impact and penetration problems that exhibit extreme deformation and material fragmentation. A comprehensive experimental study was conducted to characterize the UHPC. The investigation consisted of fracture toughness testing, the utilization of nondestructive microcomputed tomography analysis, and projectile penetration shots on the UHPC targets. To improve the accuracy of the model, a new scaled damage evolution law (SDEL) is employed within the microcrack informed damage model. During the homogenized macroscopic calculation, the corresponding microscopic cell needs to be dimensionally equivalent to the mesh dimension when the partial differential equation becomes ill posed and strain softening ensues. Results of numerical investigations will be compared with results of penetration experiments.
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Weiss, Charles, William McGinley, Bradford Songer, Madeline Kuchinski, and Frank Kuchinski. Performance of active porcelain enamel coated fibers for fiber-reinforced concrete : the performance of active porcelain enamel coatings for fiber-reinforced concrete and fiber tests at the University of Louisville. Engineer Research and Development Center (U.S.), May 2021. http://dx.doi.org/10.21079/11681/40683.

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A patented active porcelain enamel coating improves both the bond between the concrete and steel reinforcement as well as its corrosion resistance. A Small Business Innovation Research (SBIR) program to develop a commercial method for production of porcelain-coated fibers was developed in 2015. Market potential of this technology with its steel/concrete bond improvements and corrosion protection suggests that it can compete with other fiber reinforcing systems, with improvements in performance, durability, and cost, especially as compared to smooth fibers incorporated into concrete slabs and beams. Preliminary testing in a Phase 1 SBIR investigation indicated that active ceramic coatings on small diameter wire significantly improved the bond between the wires and the concrete to the point that the wires achieved yield before pullout without affecting the strength of the wire. As part of an SBIR Phase 2 effort, the University of Louisville under contract for Ceramics, Composites and Coatings Inc., proposed an investigation to evaluate active enamel-coated steel fibers in typical concrete applications and in masonry grouts in both tension and compression. Evaluation of the effect of the incorporation of coated fibers into Ultra-High Performance Concrete (UHPC) was examined using flexural and compressive strength testing as well as through nanoindentation.
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Wei, Fulu, Ce Wang, Xiangxi Tian, Shuo Li, and Jie Shan. Investigation of Durability and Performance of High Friction Surface Treatment. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317281.

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The Indiana Department of Transportation (INDOT) completed a total of 25 high friction surface treatment (HFST) projects across the state in 2018. This research study attempted to investigate the durability and performance of HFST in terms of its HFST-pavement system integrity and surface friction performance. Laboratory tests were conducted to determine the physical and mechanical properties of epoxy-bauxite mortar. Field inspections were carried out to identify site conditions and common early HFST distresses. Cyclic loading test and finite element method (FEM) analysis were performed to evaluate the bonding strength between HFST and existing pavement, in particular chip seal with different pretreatments such as vacuum sweeping, shotblasting, and scarification milling. Both surface friction and texture tests were undertaken periodically (generally once every 6 months) to evaluate the surface friction performance of HFST. Crash records over a 5-year period, i.e., 3 years before installation and 2 years after installation, were examined to determine the safety performance of HFST, crash modification factor (CMF) in particular. It was found that HFST epoxy-bauxite mortar has a coefficient of thermal expansion (CTE) significantly higher than those of hot mix asphalt (HMA) mixtures and Portland cement concrete (PCC), and good cracking resistance. The most common early HFST distresses in Indiana are reflective cracking, surface wrinkling, aggregate loss, and delamination. Vacuum sweeping is the optimal method for pretreating existing pavements, chip seal in particular. Chip seal in good condition is structurally capable of providing a sound base for HFST. On two-lane highway curves, HFST is capable of reducing the total vehicle crash by 30%, injury crash by 50%, and wet weather crash by 44%, and providing a CMF of 0.584 in Indiana. Great variability may arise in the results of friction tests on horizontal curves by the use of locked wheel skid tester (LWST) due both to the nature of vehicle dynamics and to the operation of test vehicle. Texture testing, however, is capable of providing continuous texture measurements that can be used to calculate a texture height parameter, i.e., mean profile depth (MPD), not only for evaluating friction performance but also implementing quality control (QC) and quality assurance (QA) plans for HFST.
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