摘要
Abstract
In order to optimize and improve the mechanical properties of cement-stabilized crushed stone materials,the evolution laws of un-confined compressive strength,splitting resilience modulus and elastic modulus of cement-stabilized crushed stone under different curing ages,dry and wet cycles and fatigue loading conditions were tested and analyzed.The experimental results show that the curve of moisture content and dry density conforms to the quadratic functionrelationship,the best moisture content is5.5%,andthe maximumdry density is2.43 g/cm3.When the curing period is from 7d to 90 d,the unconfined compressive strength increases by 34%,the splitting resilience modulus increases by 43%,and the elastic modulus increases by 50%.When the number of dry and wet cycles increased from 7 to 28,the unconfined compressive strength decreased by 13%,the splitting resilience modulus decreased by 15%and the elastic modulus decreased by 15%compared with that when the number of dry and wet cycles was 7.When the fatigue times increased from 0 to 7 200 times,the unconfined compressive strength de-creased by 12%,the splitting resilience modulus decreased by 12.4%,and the elastic modulus decreased by 11.7%.The above research results have accumulated experience for improving the mechanical properties of water stable base.关键词
循环荷载/水稳基层碎石/无侧限抗压强度/劈裂回弹模量/弹性模量/衰变规律Key words
Cyclic load/Water stabilized base stone/Unconfined compressive strength/Splitting resilience modulus/Elastic modulus/Decay law分类
建筑与水利
