风积沙路基压实度检测方法研究

以风积沙作为路基填料是沙漠地区筑路的新技术,面临着许多技术难题.其中风积沙路基压实度的检测方法一直是施工中的难点,因为风积沙颗粒松散,检测时容易发生扰动,改变原有状态,使检测精度受到一定影响;而且在含水量较小时,风积沙粘结力几乎为零,无法用传统的环刀法或灌沙法获取压实度值.笔者采用了破坏性和非破坏性两类测试方法进行试验,具体为环刀法、洒水环刀法、护筒灌沙法和落锤法、核子密度仪法、表面波法.详细分析了不同测试方法的优缺点,得出了适合沙基压实度检测的仪器和方法.

The measuring methods of eolin-sand roadbed's compaction degree

Making eolin-sand be material of roadbed is a new technology in process of building highway in desert and it also has many difficults.Because the sand grain is incompact and disarranged very easily,the sand changes its primary condition.When it is in low moisture,its interior felting force is zero and it is difficult to gain compaction degree using traditional methods.Thus the measuring methods of roadbed's compaction degree is a big problem.This paper uses two kinds of methods-destroyed and no-destroyed to measuring the compaction degree of eolin-sand roadbed and analyses merit and demerit of every method.Finally,this paper gains the suitable methods.