Relevant bibliographies by topics / Concrete – Cracking

Academic literature on the topic 'Concrete – Cracking'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 September 2023

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Journal articles on the topic "Concrete – Cracking"

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You, Chun Zi, Xiao Chun Fan, Di Wu, and Li Ping Pu. "Experimental Research on Temperature-Stress of Inorganic Polymer Concrete." Applied Mechanics and Materials 405-408 (September 2013): 2795–800. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.2795.

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The inorganic polymer concrete is a new environmentally material. Using the temperature - stress test machine to research its early cracking sensitivity, and compare it with the normal concrete. The deformation development process of inorganic polymer concrete consists three stages:early contraction, expansion, contraction to cracking; cracking temperature can effectively evaluate the overall cracking performance of concrete; the cracking temperature of inorganic polymer concrete is 14.2 °C, the normal concrete is 14.4 °C; the inorganic polymer concretes cracking stress is 2.658MPa, the normal concrete is 0.582MPa. The results show the inorganic polymers cracking performance is better than the normal concrete.
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Shao, Xiao Rong, and Liang Feng Zhu. "Application of Polypropylene Fiber Concrete in Underground Engineering." Advanced Materials Research 163-167 (December 2010): 1776–79. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1776.

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Aimed to solve the problem that the mass concrete structures are apt to crack in underground engineering, this paper makes some research from the view of crack resistance performance of polypropylene fiber concretes. Since polypropylene fiber achieves waterproof through realizing of crack resistant, blending polypropylene fibers into concretes can reduce early contraction deformation of concretes, hinder emergence of plastic shrinkage cracking and improve impermeability of concretes, and its construction technology is simple. In practical application of this in anti-cracking and anti- seepage concrete structures in the International Terminal project of Hangzhou Xiaoshan International Airport, we find that mix of polypropylene fibers with concretes clearly improves anti-cracking and anti-seepage performance of concrete structures and meets design requirements of basements through measuring temperature and observing cracking condition of the mass concrete structures of basements on site. The project can provide experience for reference to similar projects.
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Chen, Bo, Jian Tong Ding, and Yue Bo Cai. "Influence of Aggregates on Cracking Resistance of Concrete at Early Age." Applied Mechanics and Materials 151 (January 2012): 474–79. http://dx.doi.org/10.4028/www.scientific.net/amm.151.474.

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In order to investigate influence of aggregates on cracking resistance of concrete at early age, four kinds of aggregates, i.e. syenite, basalt, marble and sandstone, were used for the test on cracking resistance of hydraulic concretes by the temperature stress testing machine. Analogy analysis was carried out with test results of concretes with two gradings of aggregates. The results show that aggregates affect elastic modulus, thermal expansion coefficients and tensile creep behavior of concrete at early age. However, the temperature rise of concrete was slightly affected by various types and gradings of aggregate. Moreover, the cracking temperature is reliably to be used to quantitatively evaluate the influence of aggregates on cracking resistance of concrete at early age.
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Dong, Chun Min, Ke Dong Guo, and Jia Jia Sun. "A New Calculation Method for Cracking Width of Beam with High Strength Rebar." Advanced Materials Research 243-249 (May 2011): 415–18. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.415.

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With the application of high strength concrete and rebar, the influence of concrete strength on cracking width of reinforced concrete beam with high strength rebar is becoming more and more important. To investigate the effect of concrete strength on cracking width of reinforced concrete beam with high strength rebar, the experiment including 6 simply supported T-beams with high-strength rebar and 2 beams with ordinary-strength rebar have been made. Then the relevant specifications advised in Code for Design of Concreter Structure (GB50010-2002) are revised according to the experiment results so as to considering the influence of concrete on cracking width. A new cracking width method considering the influence of concrete strength on cracking width for reinforced concrete beam with high strength rebar is proposed. Finally, the comparisons between predictions and experiment results have been conducted, which shown that the proposed new cracking width method agreed with experiment results well.
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Schindler, Anton, Benjamin Byard, and Aravind Tankasala. "Mitigation of early-age cracking in concrete structures." MATEC Web of Conferences 284 (2019): 07005. http://dx.doi.org/10.1051/matecconf/201928407005.

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Early-age cracking can adversely affect the behavior and durability of concrete elements. This paper will cover means to mitigate early-age cracking in concrete bridge decks and mass concrete elements. The development of in-place stresses is affected by the shrinkage, coefficient of thermal expansion, setting characteristics, restraint conditions, stress relaxation, and temperature history of the hardening concrete. The tensile strength is impacted by the cementitious materials, the water-cementitious materials ratio, the aggregate type and gradation, the curing (internal/external) provided, and the temperature history of the hardening concrete. In this study, restraint to volume change testing with rigid cracking frames (RCF) was used to directly measure and quantify the combined effects of all variables that affect the development of in-place stresses and strength in a specific application. The laboratory testing performed involved curing the concrete in the RCF under sealed, match-cured temperature conditions to simulate concrete placement in concrete bridge decks and mass concrete. Experimental results reveal that the use of low heat of hydration concretes, concretes that use fly ash and slag cement, and lightweight aggregate concretes (because of reduced modulus of elasticity and coefficient of thermal expansion), are very effective to reduce the risk of early-age cracking in these elements.
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Choe, Gyeongcheol, Yasuji Shinohara, Gyuyong Kim, Sangkyu Lee, Euibae Lee, and Jeongsoo Nam. "Concrete Corrosion Cracking and Transverse Bar Strain Behavior in a Reinforced Concrete Column under Simulated Marine Conditions." Applied Sciences 10, no. 5 (March 5, 2020): 1794. http://dx.doi.org/10.3390/app10051794.

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This study performed accelerated corrosion tests on reinforced concrete (RC) specimens reinforced with transverse steel bars to evaluate the concrete cracking and rebar strain behaviors caused by rebar corrosion. Seven RC specimens were created with variable compressive strengths, rebar diameters, and concrete cover thicknesses. To mimic in-situ conditions, the accelerated corrosion tests applied a current to the longitudinal bar and transverse bar for different periods of time to create an unbalanced chloride ion distribution. These tests evaluated the amount of rebar corrosion, corrosion cracking properties, and transverse bar strain behavior. The corrosion rate of the transverse bar was faster than that of the longitudinal bar, and cracking first occurred in the concreate around the transverse bar in the specimens with low concrete compressive strength and thin concrete cover. Corrosion cracking and rebar strain were greatly affected by the behavior of the corrosion products that resulted from the pore volume and cracking properties of the cement paste.
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Zhao, Zhifang, Cong Xiao, Bo Fang, Yongjiu Lu, Tao Shi, Zhigang Zhao, and Xiaofeng Gao. "Effect of CNTs and MEA on the creep of face-slab concrete at an early age." Nanotechnology Reviews 11, no. 1 (January 1, 2022): 2535–46. http://dx.doi.org/10.1515/ntrev-2022-0145.

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Abstract The creep of face-slab concrete in a rockfill dam is critical for determining the restrained stress and cracking resistance of the concrete at an early age. In this article, the mix proportion of the face-slab concrete for a rockfill dam under construction without any cracking resistance additive was taken as the reference concrete (called JC) mix proportion. The carbon nanotubes (CNTs) and magnesium oxide expansion agent (MEA) were incorporated into JC to prepare face-slab concretes called NC and PC, respectively. The temperature–stress tests under temperature matching curing (TMC) and constant temperature curing (CTC) modes were conducted on these three kinds of concretes to investigate the effects of CNTs and MEA on the early-age creep properties of the face-slab concrete under variable stress conditions. The results showed that the creep performance of NC concrete under CTC mode was lower than that under TMC mode. Combined with mercury intrusion porosimetry test results, the mechanism of the effect of CNTs and MEA on creep was analyzed. The results showed that the temperature change may lead to the CNTs debonding from the cementitious matrix or matrix cracking for the NC concrete. The incorporation of CNTs can increase the early-age creep and improve the cracking resistance of concrete.
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Mahmoud Abo El-Wafa. "Fiber incorporation and crack control: A synergistic approach to improving serviceability of RC concrete." Global Journal of Engineering and Technology Advances 15, no. 2 (May 30, 2023): 001–10. http://dx.doi.org/10.30574/gjeta.2023.15.2.0085.

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This research elaborates on how cracking affects RC fiber concrete serviceability. It describes the different forms of fibrous concrete and how they function under cracking impact, enhancing concrete structure serviceability. Practical mechanical behavior language is often used to assess materials' performance. Historical assessment should help create experiences using RC fiber concrete, which reduces cracking and enhances concrete structures' serviceability. The issue is chronologically linked through early and modern author references. However, fibrous concrete's construction path is desirable worldwide. Fibrous concrete is employed in many building applications, from rehabilitation to new construction, due to its advantages over conventional construction materials. Lightness, high mechanical performance, the ability to manufacture in any form, ease of assembly, and a reduced need for supporting structures, controlled anisotropy, high specific strength, and specific stiffness all improve the serviceability of concrete structures. Fibrous concrete's many properties are opening new construction industry pathways. Thus, this research reviews the present use of fibrous concrete on cracks to improve concrete structure serviceability.
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Li, Yun Feng, Rong Qiang Du, and Fan Ying Kong. "Analysis of Concrete Early-Age Shrinkage Based on the Theory of Humidity Diffusion." Key Engineering Materials 462-463 (January 2011): 183–87. http://dx.doi.org/10.4028/www.scientific.net/kem.462-463.183.

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The early-age shrinkage cracking of concrete plays an important role to the accelerated deterioration and shortening the service life of concrete structures. Modern concretes are more sensitive to cracking immediately after setting, which is due to material characteristics (lower water/binder ratio and higher cement content) and external environmental fluctuations (humidity and temperature change). Determination of concrete free shrinkage is the basis of shrinkage cracking research. Analytical models of the autogenous shrinkage and drying shrinkage are established in this paper. The calculated results agree well with the experimental results.
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Tolmachov, Serhii, Olena Belichenko, Dmytro Tolmachov, and Yurii Turba. "CURRENT PROBLEMS OF HARDENING MONOLITHIC ROAD AND AERODROME CEMENT CONCRETE CURING." Theory and Building Practice 2022, no. 2 (December 20, 2022): 98–104. http://dx.doi.org/10.23939/jtbp2022.02.098.

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Studies of moisture loss from hardening monolithic cement concrete have been carried out. It was found that there is no consensus on the critical value of moisture loss from hardening concrete, at which shrinkage and cracking are possible, and there is no common understanding of the possible critical width of the shrinkage crack opening. It is shown that when the concrete hardens in air-dry conditions, its indicators, including durability, decrease by a factor of 2 or more. The critical value of moisture loss from hardening concrete was experimentally determined, which is 2 kg/m2. In this case, the deterioration of concrete properties as a result of rehydration of cement does not exceed 5 % and does not affect its durability. The possibility of restoring the properties of concretes, which were lost as a result of cracking during plastic shrinkage and contraction, has been experimentally proved if, after cracking, the concretes are placed for further hardening in a humid environment.
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Dissertations / Theses on the topic "Concrete – Cracking"

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Whigham, Jared Anthony. "Evaluation of restraint stresses and cracking in early-age concrete with the rigid cracking frame." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Summer/master's/WHIGHAM_JARED_54.pdf.

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Sayahi, Faez. "Plastic Shrinkage Cracking in Concrete." Licentiate thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-133.

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Early-age (up to 24 hours after casting) cracking may become problematic in any concrete structure. It can damage the aesthetics of the concrete member and decrease the durability and serviceability by facilitating the ingress of harmful material. Moreover, these cracks may expand gradually during the member’s service-life due to long-term shrinkage and/or loading. Early-age cracking is caused by two driving forces: 1) plastic shrinkage cracking which is a physical phenomenon and occurs due to rapid and excessive loss of moisture, mainly in form of evaporation, 2) chemical reactions between cement and water which causes autogenous shrinkage. In this PhD project only the former is investigated. Rapid evaporation from the surface of fresh concrete causes negative pressure in the pore system. This pressure, known as capillary pressure, pulls the solid particles together and decreases the inter-particle distances, causing the whole concrete element to shrink. If this shrinkage is hindered in any way, cracking may commence. The phenomenon occurs shortly after casting the concrete, while it is still in the plastic stage (up to around 8 hours after placement), and is mainly observed in concrete elements with high surface to volume ratio such as slabs and pavements. Many parameters may affect the probability of plastic shrinkage cracking. Among others, effect of water/cement ratio, fines, admixtures, geometry of the element, ambient conditions (i.e. temperature, relative humidity, wind velocity and solar radiation), etc. has been investigated in previous studies. In this PhD project at Luleå University of Technology (LTU), in addition to studying the influence of various parameters, effort is made to reach a better and more comprehensive understanding about the cracking governing mechanism. Evaporation, capillary pressure development and hydration rate are particularly investigated in order to define their relationship. This project started with intensive literature study which is summarized in Papers I and II. Then, the main objective was set upon which series of experiments were defined. The utilized methods, material, investigated parameters and results are presented in Papers III and IV. It has been so far observed that evaporation is not the only driving force behind the plastic shrinkage cracking. Instead a correlation between evaporation, rate of capillary pressure development and the duration of dormant period governs the phenomenon. According to the results, if rapid evaporation is accompanied by faster capillary pressure development in the pore system and slower hydration, risk of plastic shrinkage cracking increases significantly.
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Meadows, Jason Lee. "Early-age cracking of mass concrete structures." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/MEADOWS_JASON_53.pdf.

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Meadows, Jason Lee Schindler Anton K. "Early-age cracking of mass concrete structures." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/MEADOWS_JASON_53.pdf.

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Chan, Simon Hang Chi. "Bond and cracking of reinforced concrete." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/36698/.

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Ribbed reinforcement is described as “high bond” in Eurocode 2 (EC2) and within the code serviceability checks make no allowance for variations in either the ductility or bond characteristics of these bars. In this work, this matter is explored, and the crack development and behaviour of concrete beams reinforced with various types of ribbed steel bar are investigated, using both numerical and experimental approaches. The objective of the experimental approach is to undertake a series of experiments to compare the performance of beams made with standard reinforcement with that of beams formed with a new high-ductility bar produced by CELSA UK. The relationship between the bond strength and the rib pattern of reinforcing steel was studied and the behaviour at SLS load levels of RC beams with reinforcement of different rib patterns in flexure is discussed. The cracking of beams was monitored both visually and using a non-destructive Digital Image Correlation system to trace in-plane deformations and strains on the surface of the specimens. The test results showed that specimens with bars which had the highest relative rib area (fR value) exhibited the smallest crack spacing and crack width. A numerical model was developed to explore the crack development of reinforced concrete beams under flexural loading. The model employed a non-linear material model for concrete and a smeared crack approach. In order to address the well known numerical stability problems, associated with softening models, a non-local gradient method was used. Crack widths cannot be obtained directly from such models, due to the diffuse nature of non- local simulations, therefore a post-processing procedure was developed to allow the crack characteristics to be calculated. Several numerical examples are presented to illustrate the satisfactory performance of the model. In addition, a series of numerical simulations of the BOND AND CRACKING OF REINFORCED CONCRETE Simon H.C. Chan Page vi experimental beams tested in the present study were used validate the numerical model and conversely, to provide confidence in the consistency of the experimental results.
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luo, Cheng Hong. "Early age thermal cracking of concrete." Thesis, University of Leeds, 1998. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.589517.

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Fejzo, R. "Dynamic behaviour of concrete structures with cracking." Thesis, Swansea University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636965.

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The subject of this thesis is the behaviour of concrete structures under dynamic loading conditions and its modelling. In particular, the modelling of material behaviour is treated and a new material model for the description of plain concrete behaviour is proposed. For the modelling of the uncracked concrete behaviour, a strain rate sensitive elasto - viscoplastic material model developed by Bicanic is used. For the modelling of cracked concete behaviour, a distributed - smeared crack representation has been adopted. Crack initiation and propagation are controlled by a crack monitoring algorithm employing a critical strain criterion, allowing multiple cracking and controlled strain softening during the first crack opening cycle, linking the shear transfer across the crack to the magnitude of crack opening and preserving the crack directionality. Implementation of the proposed material model in a finite element computer program DEGDYN is described and a computer program listing is given. An explicit time stepping scheme is used, so the computer memory requirement is small and the program may be run even on small personal computers. Material model and computer program performance are verified using simple examples. Application of the material model in the analysis of the Koyna dam is demonstrated and results of several parameter sensitivity analyses are presented.
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Momeni, Amir Farid. "Y-cracking in continuously reinforced concrete pavements." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/15642.

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Master of Science
Department of Civil Engineering
Kyle A. Riding
When transverse cracks meander there is a high possibility for transverse cracks to meet at a point and connect to another transverse crack, creating a Y-crack. Y-cracks have been blamed for being the origin of punchouts and spallings in CRCPs. When the direction of maximum principal stress changes, it could cause a change in the crack direction, potentially forming a Y-crack. Finite Element Models (FEMs) were run to model the change in principal stress direction based on design and construction conditions. The finite element model of CRCP using typical Oklahoma CRCP pavement conditions and design was assembled. The model included the concrete pavement, asphalt concrete subbase, and soil subgrade. The effect of areas of changed friction on the direction of principal stress was simulated by considering a patch at the pavement-subbase interaction. Investigated factors related to this patch were location of patch, friction between patch and subbase, and patch size. Patches were placed at two different locations in the pavement: a patch at the corner of the pavement and a patch at the longitudinal edge between pavement ends. A change in the friction at the corner had a large effect on the stress magnitude and direction of principal stress, while a patch in the middle did not significantly change the stress state. Also, patch size had a noticeable effect on stress magnitude when the patch was at the corner. Another model was developed to understand the effect of jointed shoulder on direction of maximum principal stress. Analysis of this model showed that the stresses were not symmetric and changed along the width of the pavement. This meandering pattern shows a high potential for Y-cracking. Also, several finite element models were run to understand the effects of different shrinkage between mainline and shoulder. In order to simulate the effects of the differential drying shrinkage between the hardened mainline concrete and the newly cast shoulder, different temperature changes were applied on the mainline and shoulder. For these models, the orientation of the maximum principal stress was not significantly changed from different amounts of temperature decreases between mainline and shoulder. Also, effect of different longitudinal steel percentages was investigated by comparing two finite element models with different steel percentage. The model with higher steel percentage (0.7%) indicated more variation in stress, potentially leading to more crack direction diverging.
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Bazzo, Jeffrey D. "Analysis of Uncontrolled Concrete Bridge Parapet Cracking." Cleveland State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=csu1351032089.

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Gómez, Navarro Miguel. "Concrete cracking in the deck slabs of steel-concrete composite bridges /." Lausanne : EPFL, 2000. http://library.epfl.ch/theses/?nr=2268.

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Books on the topic "Concrete – Cracking"

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Association, British Cement, ed. Plastic cracking of concrete. 2nd ed. Slough: British Cement Association, 1991.

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Fuentès, Albert. Reinforced concrete after cracking. 2nd ed. New Delhi: Oxford & IBH Publishing Co., 1995.

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Hofstetter, Günter, and Günther Meschke, eds. Numerical Modeling of Concrete Cracking. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0897-0.

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R, Schwartz Donald. D-cracking of concrete pavements. Washington, D.C: Transportation Research Board, National Research Council, 1987.

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T, Halvorsen Grant, Burns N. H. 1932-, ACI Committee 224--Cracking., ACI-ASCE Joint Committee 423--Prestressed Concrete., and American Concrete Institute, eds. Cracking in prestressed concrete structures. Detroit, Mich: American Concrete Institute, 1989.

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Hofstetter, Günter, and Günther Meschke. Numerical modeling of concrete cracking. Wien: Springer, 2011.

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Great Britain. Scottish Development Department., ed. Early thermal cracking of concrete. Edinburgh: Scottish Development Department, 1988.

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Krauss, Paul D. Transverse cracking in newly constructed bridge decks. Washington, D.C: National Academy Press, 1996.

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Statens råd för byggnadsforskning (Sweden), ed. Force transfer from cracking concrete to reinforcement. Stockholm: Swedish Council for Building Research, 1989.

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Burrows, Richard W. The visible and invisible cracking of concrete. Farmington Hills, Mich: ACI International, 1998.

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Book chapters on the topic "Concrete – Cracking"

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Wang, Lei. "Corrosion-Induced Cracking of Prestressed Concrete." In Strand Corrosion in Prestressed Concrete Structures, 37–74. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2054-9_3.

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AbstractStrand corrosion can cause the cracking of prestressed concrete. In this chapter, the concrete cracking caused by strand corrosion under different prestress is experimentally studied. Then, a theoretical model, incorporating the coupled effects of prestress and strand corrosion, is proposed to predict the global process of prestressed concrete cracking. Following this, a meso-scale numerical model is established to simulate concrete cracking induced by the three-dimensional corrosion expansion of helical strands.
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Wang, Lei. "Brief Description of Prestressed Concrete Structures." In Strand Corrosion in Prestressed Concrete Structures, 1–16. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2054-9_1.

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AbstractStrand corrosion can cause concrete cracking, degrade bond performance at the strand–concrete interface, lead to prestress loss, and deteriorate the capacity of prestressed concrete structures. This book clarifies the mechanical behavior of corroded prestressing strands, corrosion-induced cracking, bond degradation, prestress loss, and structural performance deterioration of prestressed concrete structures and proposes the corresponding prediction models, which has an important guidance for the durability and maintenance design of prestressed concrete structures.
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Knoppik, Agnieszka, Jean-Michel Torrenti, Shingo Asamoto, Eduardus Koenders, Dirk Schlicke, and Luis Ebensperger. "Cracking Risk and Regulations." In Thermal Cracking of Massive Concrete Structures, 257–306. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76617-1_8.

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Ingraffea, A. R., H. N. Linsbauer, and H. P. Rossmanith. "Computer Simulation of Cracking in a Large Arch Dam Downstream Side Cracking." In Fracture of Concrete and Rock, 334–42. New York, NY: Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3578-1_32.

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Saouma, Victor E., and M. Amin Hariri-Ardebili. "Fracture Mechanics of Concrete." In Aging, Shaking, and Cracking of Infrastructures, 161–89. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-57434-5_8.

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Saouma, Victor E., and M. Amin Hariri-Ardebili. "Massive Reinforced Concrete Structures." In Aging, Shaking, and Cracking of Infrastructures, 949–68. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-57434-5_35.

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Wang, Lei. "Flexural Behaviors of Corroded Post-tensioned Concrete Beams." In Strand Corrosion in Prestressed Concrete Structures, 193–223. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2054-9_8.

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AbstractThe insufficient grouting and strand corrosion can affect the flexural behavior of prestressed concrete beams. An experimental study with twenty prestressed concrete beams is designed to study the effect of grouting defects and strand corrosion on the flexural performance of prestressed concrete beams. Corrosion effects on concrete cracking, post-cracking stiffness, ultimate strength, failure mode, and ductility are then clarified by the flexural test, and a coefficient is introduced to quantify the incompatible strain between corroded strand and concrete.
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Wang, Lei. "Prestress Loss and Transfer Length Prediction in Pretensioned Concrete Structures with Corrosive Cracking." In Strand Corrosion in Prestressed Concrete Structures, 139–66. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2054-9_6.

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AbstractConcrete cracking caused by strand corrosion reduces bond strength and leads to loss of prestress and changes in transfer length. In this chapter, a model, considering the coupled effects of concrete cracking and bond degradation, is proposed to predict the corrosion-induced prestress loss in prestressed concrete structures at first. Then, an analytical model, considering the coupled effects of the Hoyer effect and corrosion-induced cracking, is proposed to predict the transfer length. The effects of strand corrosion on the effective prestress and transfer length are studied.
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Jirásek, Milan. "Damage and Smeared Crack Models." In Numerical Modeling of Concrete Cracking, 1–49. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0897-0_1.

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Carol, Ignacio, Andrés Idiart, Carlos López, and Antonio Caballero. "Cracking and Fracture of Concrete at Meso-level using Zero-thickness Interface Elements." In Numerical Modeling of Concrete Cracking, 51–97. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0897-0_2.

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Conference papers on the topic "Concrete – Cracking"

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Searer, Gary R., Terrence F. Paret, Joseph Valancius, and James C. Pan. "Cracking in Concrete Fill on Metal Decks, Cracking in Flat Plate Concrete Slabs, and Cracking in Concrete Walls." In Structures Congress 2009. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41031(341)252.

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"Cracking in Prestressed Concrete Structures." In SP-113: Cracking in Prestressed Concrete Structures. American Concrete Institute, 1989. http://dx.doi.org/10.14359/3006.

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"Cracking of Partially Prestressed Concrete Beams." In SP-113: Cracking in Prestressed Concrete Structures. American Concrete Institute, 1989. http://dx.doi.org/10.14359/2999.

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"Durability of Recycled Aggregate Concrete." In SP-336: Cracking and Durability in Sustainable Concretes. American Concrete Institute, 2019. http://dx.doi.org/10.14359/51722458.

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"Cracking in Partially Prestressed Beams Under Static and Fatigue Loading." In SP-113: Cracking in Prestressed Concrete Structures. American Concrete Institute, 1989. http://dx.doi.org/10.14359/2998.

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"Anchorage Zone Cracking of Post-Tensioned Bridge Decks with Closely Spaced Anchors." In SP-113: Cracking in Prestressed Concrete Structures. American Concrete Institute, 1989. http://dx.doi.org/10.14359/3000.

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"Flexural Cracking Behavior of Partially Prestressed Pretensioned and Post-Tensioned Beams--State of the Art." In SP-113: Cracking in Prestressed Concrete Structures. American Concrete Institute, 1989. http://dx.doi.org/10.14359/2996.

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""Stresses, Strains, and Bursting Cracks in Anchorage Zones of PostTensioned Beams"." In SP-113: Cracking in Prestressed Concrete Structures. American Concrete Institute, 1989. http://dx.doi.org/10.14359/3001.

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"Model Study of Cracking of Prestressed Concrete Flat Plates." In SP-113: Cracking in Prestressed Concrete Structures. American Concrete Institute, 1989. http://dx.doi.org/10.14359/3003.

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Šavija, Branko, Mladena Luković, José Pacheco, and Erik Schlangen. "Cracking of SHCC due to reinforcement corrosion." In 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures. IA-FraMCoS, 2016. http://dx.doi.org/10.21012/fc9.118.

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Reports on the topic "Concrete – Cracking"

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Isgor, O. Cracking Susceptibility of Concrete Made with Recycled Concrete Aggregate. Portland State University Library, December 2013. http://dx.doi.org/10.15760/trec.50.

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Carino, Nicholas J., and James R. Clifton. Prediction of cracking in reinforced concrete structures. Gaithersburg, MD: National Institute of Standards and Technology, 1995. http://dx.doi.org/10.6028/nist.ir.5634.

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Roesler, Jeffery, Roberto Montemayor, John DeSantis, and Prakhar Gupta. Evaluation of Premature Cracking in Urban Concrete Pavement. Illinois Center for Transportation, January 2021. http://dx.doi.org/10.36501/0197-9191/21-001.

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This study investigated the causes for premature, transverse cracking on urban jointed plain concrete pavements in Illinois. A field survey of 67 sections throughout Illinois coupled with ultrasonic evaluation was completed to synthesize the extent of premature cracking on urban JPCP. The visual survey showed some transverse and longitudinal cracks were a result of improper slab geometry (excessive slab length and width). Ultrasonic tests over the contraction joints determined some notched joints had not activated and adjacent transverse cracks were likely formed as a result. Three-dimensional finite-element analyses confirmed that cracking would not develop as a result of normal environmental factors and slab-base frictional restraint. The concrete mixture also did not appear to be a contributing factor to the premature cracks. Finally, the lack of lubrication on dowel bars was determined to potentially be a primary mechanism that could restrain the transverse contraction joints, produce excessive tensile stresses in the slab, and cause premature transverse cracks to develop.
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Ahlrich, Randy C. User's Guide: Cracking and Seating of Portland Cement Concrete Pavements. Fort Belvoir, VA: Defense Technical Information Center, August 1992. http://dx.doi.org/10.21236/ada264905.

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Chen, Hung-Ming, Yunus Dere, and Elisa Sotelino. Mid-Panel Cracking of Portland Cement Concrete Pavements in Indiana. West Lafayette, IN: Purdue University, 2002. http://dx.doi.org/10.5703/1288284313269.

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DeSantis, John, and Jeffery Roesler. Longitudinal Cracking Investigation on I-72 Experimental Unbonded Concrete Overlay. Illinois Center for Transportation, February 2022. http://dx.doi.org/10.36501/0197-9191/22-002.

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A research study investigated longitudinal cracking developing along an experimental unbonded concrete overlay (UBOL) on I-72 near Riverton, Illinois. The project evaluated existing literature on UBOL (design, construction, and performance), UBOL case studies, and mechanistic-empirical design procedures for defining the mechanisms that are contributing to the observed distresses. Detailed distress surveys and coring were conducted to assess the extent of the longitudinal cracking and faulting along the longitudinal lane-shoulder joint. Coring over the transverse contraction joints in the driving lane showed stripping and erosion of the dense-graded hot-mix asphalt (HMA) interlayer was the primary mechanism initiating the longitudinal cracks. Cores from the lane-shoulder joint confirmed stripping and erosion was also occurring there and leading to the elevation difference between the driving lane and shoulder. Field sections by surrounding state departments of transportation (DOTs), such as Iowa, Michigan, Minnesota, Missouri, and Pennsylvania, with similar UBOL design features to the I-72 section were examined. Site visits were performed in Illinois, Michigan, Minnesota, and Pennsylvania, while other sections were reviewed via state DOT contacts as well as Google Earth and Maps. Evidence from other DOTs suggested that HMA interlayers, whether dense graded or drainable, could experience stripping, erosion, and instability under certain conditions. An existing performance test for interlayers, i.e., Hamburg wheel-tracking device, and current models reviewed were not able to predict the distresses on I-72 eastbound. Adapting a dynamic cylinder test is a next step to screen HMA interlayers (or other stabilized layers) for stripping and erosion potential. To slow down the cracking and faulting on I-72 eastbound, sealing of the longitudinal lane-shoulder joint and driving lane transverse joints is suggested. To maximize UBOL service life, an HMA overlay will minimize water infiltration into the interlayer system and significantly slow down the HMA stripping and erosion mechanism that has led to longitudinal cracking and lane-shoulder faulting.
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Swartz, Stuart E. Applicability of Fracture Mechanics Methodology to Cracking and Fracture of Concrete. Fort Belvoir, VA: Defense Technical Information Center, February 1986. http://dx.doi.org/10.21236/ada165639.

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Rahman, Mohammad, Ahmed Ibrahim, and Riyadh Hindi. Bridge Decks: Mitigation of Cracking and Increased Durability—Phase III. Illinois Center for Transportation, December 2020. http://dx.doi.org/10.36501/0197-9191/20-022.

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Early-age cracking in concrete decks significantly reduces the service life of bridges. This report discusses the application of various concrete mixtures that include potential early mitigation ingredients. Large-scale (7 ft × 10 ft) experimental bridge prototypes with similar restraint conditions found in actual bridges were poured with different concrete mixtures to investigate mitigation techniques. Portland cement (control), expansive Type K cement, internally cured lightweight aggregate (LWA), shrinkage-reducing admixture (SRA), and gypsum mineral were investigated as mitigating ingredients. Seven concrete mixtures were prepared by using individual ingredients as well as a combination of different ingredients. The idea behind combining different mitigating techniques was to accumulate the combined benefit from individual mitigating materials. The combined Type K cement and LWA mixture showed higher concrete expansion compared with mixtures containing Portland cement, Type K cement, LWA, and SRA in the large-scale experimental deck. Extra water provided by LWA significantly enhanced the performance of Type K cement’s initial expansion as well as caused larger total shrinkage over the drying period. A combination of Type K cement and gypsum mineral showed insignificantly higher expansion compared with the individual Type K mixture. Overall, the experimental deck containing SRA showed the least total shrinkage compared with other mixtures. Finite-element modeling was performed to evaluate and predict concrete stress-strain behavior due to shrinkage in typical bridges. A parametric study using finite-element analysis was conducted by altering the structure of the experimental deck. More restraint from internal reinforcement, less girder spacing, larger girder flange width, and more restrictive support conditions increased the concrete tensile stress and led to potential cracking in the concrete deck.
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Adams, Caitlin J., Baishakhi Bose, Ethan Mann, Kendra A. Erk, Ali Behnood, Alberto Castillo, Fabian B. Rodriguez, Yu Wang, and Jan Olek. Superabsorbent Polymers for Internally Cured Concrete. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317366.

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Two commercial superabsorbent polymer (SAP) formulations were used to internally cure cement pastes, mortars, and concretes with a range of water-to-cement ratios (w/c 0.35–0.52). The following properties were determined as a function of cement chemistry and type, use of chemical admixtures, use of slag, and batching parameters: SAP absorption capacity, fresh mixture workability and consistency, degree of hydration, volumetric stability, cracking tendency, compressive and flexural strength, and pumpability. SAP internal curing agents resulted in cementitious mixtures with improved hydration, accelerated strength gain, greater volumetric stability, and improved cracking resistance while maintaining sufficient workability to be pumped and placed without sacrificing compressive or flexural strength. When using SAP, batching adjustments prioritized the use of water reducing admixture instead of extra water to tune workability. While the benefits of SAP internal curing agents for low w/c mixtures were expected, SAP-containing mixtures with w/c ≥ 0.42 displayed accelerated strength development and decreased cracking tendency.
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Varma, Amit H., Jan Olek, Christopher S. Williams, Tzu-Chun Tseng, Dan Huang, and Tom Bradt. Post-Fire Assessment of Prestressed Concrete Bridges in Indiana. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317290.

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This project focused on evaluating the effects of fire-induced damage on concrete bridge elements, including prestressed concrete bridge girders. A series of controlled heating experiments, pool fire tests, material tests, and structural loading tests were conducted. Experimental results indicate that the portion of concrete subjected to temperatures higher than 400°C loses significant amounts of calcium hydroxide (CH). Decomposition of CH increases porosity and causes significant cracking. The portion of concrete exposed to temperatures higher than 400°C should be repaired or replaced. When subjected to ISO-834 standard fire heating, approximately 0.25 in. and 0.75 in. of concrete from the exposed surface are damaged after 40 minutes and 80 minutes of heating, respectively. Prestressed concrete girders exposed to about 50 minutes of hydrocarbon fire undergo superficial concrete material damage with loss of CH and extensive cracking and spalling extending to the depth of 0.75–1.0 in. from the exposed surface. These girders do not undergo significant reduction in flexural strength or shear strength. The reduction in the initial stiffness may be notable due to concrete cracking and spalling. Bridge inspectors can use these findings to infer the extent of material and structural damage to prestressed concrete bridge girders in the event of a fire and develop a post-fire assessment plan.
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