Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 40 for “"crack-width"”.
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Concrete crack width under combined reinforcement corrosion and applied load
… resulting primarily from premature concrete cracking and spalling have an estimated cost running to $100 billion per annum world-wide. The continual demands for greater load carrying capacity of existing infrastructure only exacerbate the problem. In practice, concrete crack width propagation …
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Aggregate Interlock Behavior of Large Crack Width Concrete Joints in PCC Airport Pavements
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2001.
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Experimental Mechanics of Crack Width in Full-Scale Sections of Continuously Reinforced Concrete Pavements
… concrete pavements have numerous transverse cracks that occur naturally at variable spacing. These cracks do not affect the performance of the structure unless they widen and result in a loss of load transfer efficiency. The capacity to transfer vertical loads across a crack depends on a …
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Examination of flexural crack width prediction in concrete: comparison of analytical and numerical models
The reliability of crack prediction methods in concrete design plays a role in the degree of confidence with which durability can be ensured. Bond failure between concrete and the embedded reinforcing steel exposes the steel surface within a crack path. This relative slip results from differential …
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A Study of the Effect of Crack Width at Tile Joints on Soil Movement Intodrain Tile Lines
Made available in DSpace on 2014-12-05T17:36:59Z (GMT). No. of bitstreams: 1 5805439.pdf: 5285503 bytes, checksum: 39f258f2fe8c9326bca6b3b7b3d56cb1 (MD5) Previous issue date: 1958
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Assessing the influence of crack width on the durability potential of cracked concrete using the durability index approach
… both in service and new, are subject to cracking. Irrespective of the cause of the cracking, cracks can increase the rate of penetration of aggressive species into concrete and modify the transport properties. Consequently, the service life of corrosionaffected RC structures may be …
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A Critical Evaluation of the Use of Crack Width Requirements in the Durability Design of Marine Reinforced Concrete Structures
Crack width requirements (CWRs), which aim to limit cracks in reinforced concrete (RC) to maximum prescribed values, play a major – and often dominant – role in the design of marine RC structures. However, there are several issues with the current CWRs, chief among which is the fact that, despite …
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Relationship Between Joint Performance and Geometrical and Mechanical Properties of Concrete Joints Subject to Cyclic Shear
The ratio of crack width to maximum aggregate size is a relevant value that should be used when describing joint characteristics rather than the crack width. The results showed the critical need to systematically establish a shear stress level that is appropriate for different types of aggregates …
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The development of empirical chloride-induced corrosion rate prediction models for cracked and uncracked steel reinforced concrete structures in the marine tidal zone
… corrosion rate prediction models for cracked and uncracked reinforced concrete (RC) structures in the marine tidal exposure zone are proposed in this study. The data used to develop the models were obtained from parallel corrosion experiments carried out by exposing half of 210 beam …
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Structural Health Monitoring Using Deep Learning
… susceptible to damage over their lifespan and cracks are often the earliest noticeable form of damage. Crack width is an indicator of the severity of crack damage. Unaddressed cracks can develop to failures potentially resulting in injury, death and huge economic costs. Traditional methods such …
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Low-Shrinkage Fiber-Reinforced Concrete for Infrastructure Construction and Rehabilitation
… improved shrinkage resistance and flexural post-cracking behavior. Adding 0.66% MSF and 1.25% SRA notably reduced crack development, delayed onset of corrosion, and increased residual flexural properties of cracked beams. Adding SMMs enhanced the bond strength of FR-SCC by 10%-60%. FR-SCC with …
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Laboratory evaluation of cracking in asphalt concrete
Cracking is one of the major distresses in asphalt concrete leading to high maintenance and rehabilitation costs throughout the nations pavement infrastructure. Asphalt concrete is a three phase, heterogeneous composite consisting of aggregate, mastic, and air voids. Crack initiation, crack path …
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Investigation of punchout distress of continuously reinforced concrete pavement
… the structural response models on the basis of crack width, steel stresses, and concrete stresses. Distinct differences were noted between the TTICRCP model and the models which assume a uniformly distributed bond stress.
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The effects of impact loading on reinforced concrete panels
… included residual strength, pendulum backswing, crack width and permanent deformation as well as 'punching' through of the panels. It was shown that residual strength was inadequate on its own to classify a specimen as failed, but had to be used in conjunction with one or more of the other damage …
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Recommendations for the design of ultra-high performance concrete structures
… of the material and the use of a maximum crack width criterion to govern design, are explained. Next, the most current design guidelines are presented in full, with attention paid to bending and shear resistance. Comparisons with previous codes demonstrate the ability of these guidelines …
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Service life extension of reinforced concrete structures using hydrophobic impregnation
… industry. Furthermore, the appearance of cracks can be considered as an inevitable phenomenon in the design life of reinforced concrete structures, due to concrete being an inherently cracked material. The presence of cracks within the cover zone changes the dynamics of transport …
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Effect of Stay-in-Place Metal Forms on Performance of Concrete Bridge Decks
… survey results indicate that the average crack width and crack density for decks without SIPMFs were greater by 41 and 25 percent, respectively, than the corresponding values for decks with SIPMFs and that decks without SIPMFs had more potholes than decks with SIPMFs. However, the …
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Behaviour of massive reinforced concrete sections in seawater
… II), corrosion in statically and dynamically cracked sections (Phase III) and structural response of heavily corroded individual and lapped bar sections (Phase IV).<br/><br/>Phase I work shows a marked difference between submerged exposures to seawater as opposed to NaCl solution, the …
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Glass Fiber Reinforced Polymer Bars as the Top Mat Reinforcement for Bridge Decks
… deflection calculations, bond coefficient for crack width calculations, and development length. The results and conclusions address design concerns of the different types of FRP bars as applied in the top mat of reinforcement of a bridge deck. A secondary objective was to evaluate the disparity …
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Cracking of reinforced concrete structural walls subjected to cyclic loading
… subject of this thesis is the examination of the cracking behavior and seismic response of reinforced concrete structural walls. This examination is being made using the results of a series of experiments conducted at the University of Illinois at Urbana-Champaign as part of the Network for …
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