基于道路生态设计的长江口细砂路用性能分析

长兴岛土地资源欠缺,而砂极为丰富,从环境可持续发展的思想出发,考虑将长江口细砂作为高等级公路的路基材料。通过建试验路段开展了长江口细砂的物理特性、力学特性的研究,表明单纯长江口细砂在CBR值等方面不能满足高等级公路的要求。为此通过添加混合料来改善细砂性能。试验结果选用:石灰∶粉煤灰∶细砂为4∶8∶88和3∶6∶91(体积比)的混合料作为试验段实铺路基材料。

On Road Performance Analysis of Fine Sand in the Yangtz Estuary Based on Road Ecological Design

Changxing Island is lacking in land resources but be abundant in sand.The fine sand of the Yangtze Estuary is considered to be good road foundation material of high-grade highway from the angle of environment developing idea.After the research on physical characteristics and mechanical property of the fine sand through test road section,the results show that pure fine sand of the Yangtze Estuary cannot satisfy the requirements of high-grade highway.The fine sand performance can be improved by adding mixture...