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Study on the Shear Behavior of Large Longitudinal Slope Bridge Deck Asphalt Pavement Surface

Author: ChenLiWei
Tutor: ZhangYiLuo
School: Chang'an University
Course: Road and Railway Engineering
Keywords: Grew up in longitudinal slope Deck Pavement Shear Performance Influencing factors Road performance Comparative study Shear standard
CLC: U443.33
Type: Master's thesis
Year: 2011
Downloads: 53
Quote: 0
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Abstract


With the development of transportation , traffic , overloaded , overloading the increase as well as the emergence of channel traffic , many highway opened to traffic soon had a serious instability rutting and instability, rutting and asphalt mixes anti The shears performance are closely related. Factors affecting the asphalt pavement shear in addition to the load , the environment , and also associated with pavement materials and structures . Therefore , the study of the shear behavior of asphalt mixes and asphalt pavement , pavement structure design , material design is essential . Firstly grew up longitudinal slope Deck Asphalt Pavement mechanics analysis drawn: grow up longitudinal slope bridge deck pavement uphill impose a rut most serious damage ; grew up in the of longitudinal slope bridge deck pavement layer downhill impose shear The cut goes on to destroy the most serious . Then one by one the factors that affect the performance of the Shearing (such as the structure of asphalt mixture type and particle size , size distribution, Whetstone than asphalt types , degree of compaction ) and (high temperature performance with common road rutting performance , low-temperature crack resistance ) were compared , draw : the shear strength of the mixture , internal friction angle , cohesion and dynamic stability trends are basically with the particle size increases with increasing ; there is an optimum gradation the shear performance with high , low temperature performance reaches its maximum ; maximum shear strength corresponding to one of the best Whetstone than ; modified asphalt can significantly improve the performance of asphalt mixture shear and high stable , low temperature performance ; during the construction process , we should strictly control the degree of compaction , and thus make the road porosity within the appropriate range , so you can better improve the shear properties of the mixture . In addition, analysis grow up the longitudinal slope the deck pavement sections disease because , and Concrete Deck Asphalt Pavement mechanics calculations , calculated at different slope , different temperatures Pavement within the maximum shear stress and the pavement shear criteria discussed .

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CLC: > Transportation > Road transport > Bridges and Culverts > Bridges constructed > Superstructure > Bridge deck pavement
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