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Shearing Behaviors of Asphalt Overlay Upon Concrete Pavement and Its Applications

Author: FuXiang
Tutor: ZhangJianHua；XieQiang
School: Chongqing University
Course: Geotechnical Engineering
Keywords: The theory of elastic multi-layer system Asphalt overlay Shear envelope Laying thickness
CLC: U416.2
Type: Master's thesis
Year: 2010
Downloads: 82
Quote: 0
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Abstract


Cement concrete pavement asphalt overlay (white change black), because it can effectively improve the performance of the old cement concrete pavement, taking full advantage of the old cement concrete pavement, low cost, easy construction, traffic, environmental impact and, in the old cement concrete pavement The renovation project to dominate. However, with the surge of traffic, increasing vehicle load capacity, the asphalt pavement and cement concrete the grassroots caused by pavement goes off pro package frequent diseases (especially mountain city roads). The current specification only the design of the asphalt overlay structure combination of the materials used, practices and thickness made the description of the guidance, especially in the control of the thickness of only a range of recommended, and not be considered interlaminar shear, Pavement premature failure of potential problems will be an added burden on the durability of the road have serious repercussions. Concrete Pavement Overlay for the study focuses on the analysis and overlay layers between shear stress and shear strength. (1) for Cement Concrete Pavement Asphalt Overlay shear stress analysis. Discussed the cement concrete pavement asphalt overlay shear stress calculation method, and made the derivation and comparative analysis; with elastic multilayer system theory analysis of the shear stress distribution and magnitude of the overcoat layer, the layers of the the opposite layer thickness of layers, the surface layer modulus, cement concrete and asphalt overlay bonded relationship, surface layer surface coefficient of friction, vehicle axle load size and other factors associated with Overlay stress distribution and magnitude, to ascertain the extent of related factors. (2) Concrete Pavement Overlay shear strength test. Laboratory experiments, to ascertain the SMA-13, AC-16I and cement concrete three shear strength and interlaminar shear strength, and to draw the Overlay shear envelope curve based on Mohr criteria. (3) based on the shear considered in Concrete Pavement Overlay overlay thickness H to determine. By shear stress calculations and experiment data obtained based on of Cement Concrete Asphalt Overlay shear consider laying thickness H of the method for determining value and the corresponding thickness. This study can not only Old Cement Concrete Pavement Asphalt Overlay early pavement goes off, upheaval disease give a reasonable explanation, but its theoretical analysis and test data as a basis for related research. The pavement thickness H value approach can provide a reference design, which has a theoretical academic value and practical value.

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CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Pavement Engineering
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