Study on Dry Shrinkage Performance of Binary Recycled Cement Stabilized Fragments

Abstract

In order to integrate the utilization of iron tailings sand and waste asphalt mixture, this paper applies these two waste materials to the road base for dry shrinkage test and regression analysis. The results show that the cumulative water loss rate and dry shrinkage strain of the recycled cement stabilized macadam mixed with the waste asphalt mixture and the iron tailing sand are smaller than that of the cement stabilized macadam. Compared with the recycled cement stabilized macadam with recycle asphalt pavement, the recycled cement stabilized macadam with iron tailings has smaller dry shrinkage strain and lower sensitivity to the change of water content. The regression analysis of dry shrinkage strain, water loss rate and dosage of two kinds of recycled cement stabilized macadam is carried out, and the same formula model is obtained.