Influence of Interface Roughening on Shear Strength of Rigid-flexible Composite Pavement
In order to solve the problem of slippage and shear failure between the rigid-flexible composite pavement layers,taking the rigid-flexible composite pavement interlayer structure as the research object,and studies the influence of the interlayer interface of the inlaid stone structure on the interlayer shear strength of the composite pavement.The particle sizes of the crushed stones are 2.36～4.75 mm,4.75～9.5 mm and 9.5～13.2 mm respectively,and the spreading area of the crushed stones under each particle size is set to 25%,50% and 75%,and the embedding depth is 2/5～3/5 of the particle size.Using a self-made oblique shear fixture,the inter-laminar shear strength of the composite specimen was studied under three types of crushed stone particle sizes,and each particle size corresponds to the three types of crushed stone distribution areas.The test results show that:(1)The interlayer shear strength of rigid-flexible composite pavement increases with the increase of the gravel particle size;(2)Under the spreading area,the interlayer shear strength increases with the increase of the spreading area.
NETL
NSTL
万方数据
维普
