Study on Mechanical Properties of Reclaimed Cement Stabilized Gravel Base
In order to improve the road performance of reclaimed cement stabilized crushed stone base,this paper studies the mechanical properties of reclaimed aggregate cement stabilized crushed stone mixture based on practical projects.The design uses 4 kinds of recycled aggregate content(0%,25%,50%,75%),4 kinds of cement content(3%,4%,5%,6%),respectively,to carry out the compaction test,unconfined compressive strength and splitting strength.The results show that with the increase of recycled aggregate content,the decrease of maximum dry density is about 9.8%,9.7%,9.7%and 9.6%,and the increase of optimal water content is about 51.1%,48.9%,47.9%and 46.9%.With the increase of cement dosage,the unconfined compressive strength increased from 3.52 MPa to 6.10 MPa at day 7,and the splitting strength at day 90 was 0.932 MPa.Reclaimed cement stabilized crushed stone material can improve the internal ex-trusion force of stabilized crushed stone,enhance the unconfined compressive strength and splitting strength,and replace part of reclaimed aggregate with milling material,which can not only improve the performance of reclaimed cement stabilized crushed stone,but also realize the recycling of resources.
万方数据
维普
