Analysis on Influencing Factors of Interlayer Performance of Double-layer Continuous Paving of Cement Stabilized Crushed Stone Base
In order to study the influencing factors of interlayer interface strength of cement stabilized crushed stone base,through direct shear test and direct tensile test,different water-cement ratios and cement slurry doses have been analyzed to obtain the optimal cement slurry dose and water-cement ratio between layers.Based on the interlocking effect of inter-layer interlocking contact,the influence of lower compaction degree and mixture gradation on the interface bonding strength between layers has been studied.The results have shown that when the spreading amount of cement slurry is 0.315g/cm2 and the water cement ratio is 1 ∶ 1.5,the bond strength between layers increases the most.When the lower base layer is compacted to 94%,the upper layer is paved,and a good embedded structure can be formed between the upper and lower layers.The increase of coarse aggregate content can further improve the interlocking effect between the upper and lower layers and improve the constraint effect between the upper and lower layers.Furthermore,the indoor test has been verified by physical engineering,and it has been found that the water-cement ratio has a more significant effect on the interlayer performance of cement-stabilized crushed stone.
pavement engineeringcement stabilized crushed stone basedouble-layer continuous pavinginterlayer performance
万方数据
维普
