Application of Chip-Sprinkling Technique to Concrete Bridge Asphalt Pavement Structure
REN Wanyan
HAN Sen
LI Jun
CHEN De
Abstract：In order to analyze the effect of chip-sprinkling technique on the interlaminar shear performance of chipsprinkling cement concrete(CSCC) bridge asphalt pavement structure,and also recommend the optimal chip-sprinkling technique parameters,direct shearing test based on orthogonal method was designed.The effect of chipsprinkling technique parameters,such as aggregate type,aggregate gradation,aggregate spreading area ratio and aggregate pressing depth ratio,on the interlaminar shear performance of CSCC bridge asphalt pavement structure was discussed through the evaluation indexes of similar shear modulus and interlaminar shear strength.At the same time,the significance level of chip-sprinkling parameters was assessed on the basis of range analysis.Laboratory test results show that the diabase with particle size of 13.2-16.0 mm,spreading area ratio of 80％,pressing depth ratio of 0.2 respectively shows better interlaminar shear performance,which corresponds to the optimal bonding oil dosage of 0.9 L/m2.The significance level of chip-sprinkling parameters ranks as follows:aggregate pressing depth ratio＞ aggregate particle size＞aggregate spreading area ratio＞aggregate type.
Keywords：cement concrete bridgeasphalt pavement structurechip-sprinkling techniqueinterlaminar shear performancechip-sprinkling parameteroptimal bonding oil dosage
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 222-228 )