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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 29 for “"Rigid pavement"”.
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The influence of heavy vehicle dynamics on rigid pavement response
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1987.
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Evaluation of the performance of polyurethane foams in rigid pavement preservation
After several years of service, concrete pavement slabs tend to settle due to weak subgrade or erosion of the subgrade soil. Different treatment techniques have been used to rectify the problem. In recent years, high-density polyurethane (HDP) foams were introduced on concrete pavements after their …
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Sensitivity Analysis Of Aashto's 2002 Flexible And Rigid Pavement Design Methods
Over the years pavement design has been based on empirical equations developed from the American Association of State Highway Transportation Officials (AASHTO) road tests. The various editions of the AASHTO pavement design guide have served well for several decades; nevertheless many serious …
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A Correlation of Pedologic Soil Types With Rigid Pavement Performance in Dewitt County, Illinois
Made available in DSpace on 2014-12-05T17:36:54Z (GMT). No. of bitstreams: 1 0018123.pdf: 31034076 bytes, checksum: 25867fd46e1050ba67e27cb480b66231 (MD5) Previous issue date: 1956
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Mechanistic service life prediction of rigid pavement joint sealant: a new laboratory testing technique
… to evaluate the performance of sealants used in rigid pavement joints was developed. A special fixture, attached to a servo-hydraulic testing machine, was designed to transfer applied cyclic shear deflection to a sealant sandwiched between two 51 x 51 x 51 mm portland cement concrete (PCC) cubes …
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Study of load transfer efficiency of airfield rigid pavement joints based on stresses and deflections
… Federal Aviation Administration's (FAA) airfield rigid pavement thickness design procedures. The FAA procedure assumes 25% of stress applied to the edge is transferred to the adjoining slab. Moreover, since it is not convenient or practical to measure stress-based load transfer efficiency [LTE …
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Nonlinear Analysis of the Load Transfer Mechanism in Rigid Pavement Systems Considering Various Interface Conditions
Various conventional definitions of load transfer efficiency, such as the efficiency based on displacement, stress and applied force, were studied. This study is the first to define load transfer efficiency based on the load transferred through the load transfer device. The results presented in …
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A Study of the Mechanistic-Empirical Pavement Design Guide for South Carolina
<p>The Mechanistic-Empirical Pavement Design Guide (MEPDG) provides the highway pavement design community with a new program for the design of flexible and rigid pavement structures using state-of-the-art mechanistic-empirical analyses and performance predictions. This report summarizes a research …
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High-volume recycled materials for sustainable transportation infrastructure
… The main focus was to develop mixtures for rigid pavement construction. A variety of fine and coarse recycled concrete aggregates (RCA) were investigated. The feasibility of replacing 50% of Portland cement with industrial by-products and supplementary cementitious materials (SCMs) was also …
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Application of Fracture Mechanics to Assess Reflective Cracking Potential in Airfield Pavements
… 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 increased, the calculated J-value and mode I SIFs were reduced …
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Early-age behavior of CRCP and its implications for long-term performance
Continuously Reinforced Concrete Pavement (CRCP) is the most widely used rigid pavement type in Texas. The advantages of CRCP over other rigid pavement types include the absence of transverse contraction joints. With the increased use of CRCP, a vast amount of information has been collected on …
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Performance of doweled concrete joints subjected to fatigue loading
… believed to be a major factor for the failure of rigid pavement joints.;Dr. Shoukry invented a new dowel design named shokbar that significantly reduces the magnitude of such contact stresses. The primary objective of this study is to characterize the behavior of shokbars versus regular dowels. …
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Stress concentration around dowel bars in jointed rigid concrete pavements
… Finite Element (3DFE) modeling of dowel jointed rigid pavement structures. Both straight and skewed joints were modeled using extremely fine meshing that allows accurate modeling of the friction and separation at dowel concrete interfaces. The model response was examined for the case of joint …
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Characterization of Ohio Traffic Data for Integration into the Mechanistic-Empirical Pavement Design
… traffic inputs to be defined for the design of pavement structures. These inputs include (a) base-year traffic data such as the initial two-way annual average daily truck traffic (AADTT), (b) traffic volume adjustment factors (directional and lane distribution factors, vehicle class …
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Improved Load Distribution for Load Rating of Low-Fill Box Structures
… AASHTO guidelines do not consider the effects of pavements present above the fill while determining the load distribution. The distribution of the wheel load through a pavement may be different from that suggested by the current AASHTO guidelines. In addition to the pavement effect, the fill …
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Evaluation of pavement joint sealants: a new testing technique
… to evaluate the performance of sealants, used in rigid pavement joints, was developed. A special fixture was designed to transfer cyclic in-line deflection, applied by a testing machine, to cyclic normal and shear deflections on a sealant sandwiched between two-2 x 2 x 2 in. portland cement mortar …
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Evaluation of In-Situ variability of concrete pavement characteristics and their effect on performance
Pavement performance prediction must account for uncertainties in pavement characteristics, climate, traffic loading, etc. Past research identified that concrete thickness and flexural strength were two pavement characteristics that significantly affected transverse cracking in Jointed Plain …
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Discrete Element Method (DEM) Contact Models Applied to Pavement Simulation
Pavement is usually composed of aggregate, asphalt binder, and air voids; rigid pavement is built with hydraulic cement concrete; reinforced pavement contains steel. With these wide ranges of materials, different mechanical behaviors need to be defined in the pavement simulation. But so far, there …
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The Behavior of Pore Water Pressure in Cohesive Subgrade Soils
… Deflectometer (FWD) tests. The deflection of a pavement structure largely depends on the deformation of subgrade soils, which is in turn dependent upon soil stiffness. Soil stiffness can be characterized by the resilient modulus. Experimental tests were performed for saturated and unsaturated …
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