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 21 for “"Reflective cracking"”.
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Application of Fracture Mechanics to Assess Reflective Cracking Potential in Airfield Pavements
The 2-D model was applied to investigate a number of complicated effects and interactions in rehabilitated airfield pavements. When temperature gradients were present in overlay systems, the critical overlay responses were raised dramatically. As the friction coefficients between slabs and CTB …
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Three-Dimensional Finite Element Analysis to Evaluate Reflective Cracking Potential in Asphalt Concrete Overlays
The study revealed that the crack treatment interlayer, ISAC, greatly reduces the tensile stresses at the bottom of the overlay after both the cooling cycle and cooling cycle plus traffic loading. On the other hand, the modified asphalt (PG 64-28) greatly reduces the tensile stresses at the top of …
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Modeling reflective cracking development in hot-mix asphalt overlays and quantification of control techniques
… concrete pavement (JCP) or a cracked surface, reflective cracking can develop shortly after the overlay application due to traffic loads and environmental changes. Several remedial techniques, including interlayer systems, have been incorporated into HMA overlays to control reflective cracking. …
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Three-dimensional numerical analysis of reflective cracks in airfield pavements
… of the HMA overlay, typically in the form of reflective cracking. Reflective cracking is a fatigue cracking distress, which is initiated at the bottom of the HMA overlay and propagates through its thickness and the surface. It can reduce the life expectancy of the overlay because it leads to …
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Long-Term Modelling of Composite Pavement Performance
… distress in this type of pavement is reflection cracking which can be due to traffic and/or climatic loading. This thesis is focused on the prediction of reflective cracking as a composite pavement response due to traffic and thermal loading. The model is the first of its kind to include factors …
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Assessment of Fracture Resistance of Asphalt Overlays through Heavy Vehicle Simulator and Laboratory Testing: Synthetic Fiber and Rubber Modified SMA Mixes
… will create cracks on the surface known as reflective cracking. Reflective cracking can reduce the life of a pavement by allowing water or other particles to get into the underlying layers, which causes the pavement structure to lose strength. To improve the performance of the composite …
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Performance Evaluation of Asphalt Mixtures with Tire Rubber Modified Binder
… means of dynamic modulus master curves, fatigue cracking, permanent deformation, and reflective cracking resistance. Dynamic modulus tests were conducted using the Asphalt Mixture Performance Tester (AMPT) device and the master curves were built using AASHTO R84 standard procedure for asphalt …
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Development of a Composite Concrete Bridge System for Short-to-Medium-Span Bridges
… The system offers enhanced performance against reflective cracking, and reduces the likelihood of cracking due to time dependent effects. The effects of transverse bending due to concentrated wheel loads are investigated with respect to reflective cracking. Transverse bending moment are …
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Development of Improved Connection Details for Voided Slab Bridges
… in many of these bridges. The failure leads to reflective cracking in the wearing surface which allows chloride laden water to seep down through the joint, where it corrodes the reinforcement and prestressing strand. Ultimately, the failed keys lead to costly repairs and bridge replacements …
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Laboratory and Field Evaluation of Performance-Engineered Stress Relief Courses in Nevada
… NDOT initiated a three-phase study to mitigate reflective cracking that resulted in the development of an engineered stress relief course (ESRC) with performance-based mix design specifications to be used as an interlayer between the existing AC layer and the AC overlay. Consequently, the ESRC …
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VHPC Material Characterization and Recommendations for the Buffalo Branch Bridge Rehabilitation
… from the precast concrete in the shear key, reflective cracking propogates through the deck allowing water and chemicals to leak down into the joints. This can lead to the prestressing steel inside the precast member and the transverse tie steel corroding. This necessitates the bridge being …
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Investigation of Concrete Mixtures to Reduce Differential Shrinkage Cracking in Inverted T Beam System
… The system offers enhanced performance against reflective cracking and reduces the likelihood of cracking due to time dependent effects. Differential shrinkage is believed to be one of the causes of deck cracking in inverted T-beam systems. The objective of this study was to develop mix designs …
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Performance Quantification of Interlayer Systems in Flexible Pavements Using Finite Element Analysis, Instrument Response, and Non Destructive Testing
… to predict the overlay service life against reflective cracking from existing HMA layers, were developed.
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Composite Pavements: A Technical and Economic Analysis During the Pavement Type Selection Process
… such as fatigue (bottom-up and top-down) cracking, rutting, and reflective cracking were modeled and investigated using sensitivity analyses. At the economic level, a deterministic life cycle cost analysis (LCCA) based on Virginia Department of Transportation (VDOT) guidelines was …
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Evaluation of climate data sources and investigation of performance prediction models for mechanistic-empirical pavement designs
… (satellite-based data provided through NASA), a reflective-cracking model for overlay performance prediction, a tool to design short jointed plain concrete pavement (SJPCP) over asphalt concrete (AC), and major bugs were resolved to improve computational performance. A comprehensive evaluation of …
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Experimental evaluation of monotonic and cyclic fracture behavior using disk-shaped compact tension test and released energy approach
… cyclic fracture phenomena such as cyclic thermal cracking, block cracking and reflective cracking. Five different asphalt concrete mixtures were tested for both loading mechanisms across four test temperatures (-12, 0, 10, and 20oC). After an extensive exploratory stage, the load-controlled …
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New Approach to Connections Between Members of Adjacent Box Beam Bridges
… issues caused by shear key failure and reflective cracking in the topping. The means and methods to alleviate the problems in connections between members of the ABBB were researched and the development of new connection details was pursued. Diagnostic tests to study the in-service …
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Balancing asphalt mixes containing recycled materials for optimum field performance
… (RAP) and recycled asphalt shingle (RAS), the cracking resistance of asphalt pavements might be jeopardized. Therefore, such AC mixtures should be carefully investigated to ensure that performance is not compromised in the pursuit of an economical and sustainable solution. This study …
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Development of a New Environmentally Friendly Glass Fibre Reinforced Cold Mix Microasphalt with High Resistance to Cracking and Deformation.
… This research was designed to investigate the cracking and deformation resistance properties of microapshalt both with and without a novel glass fibre applied. The effect of varying the length of glass fibres (aspect ratio) and varying the percentage of quantity of glass fibres (volume …
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Impact of recycled asphalt shingles on asphalt concrete characteristics
… included complex modulus, fracture, overlay reflective cracking resistance, wheel track permanent deformations, and push-pull fatigue tests. The asphalt binder replacement levels in the mix using combinations of RAS and RAP were in the range of 43% to 64%. For the FMA, in addition to the …
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