论文部分内容阅读
近年来,在一、二级公路和援外公路修建中,为提高路基强度,保证路面使用质量,开始采用重型击实标准控制压实。实践表明,当土的含水量接近重型标准的最佳含水量(±2～3％以内)时,采用12～15吨光轮压路机碾压,路基一般可以达到重型标准的压实度,无疑这是一种经济有效的技术措施。但是,在湿热多雨地区,粘性土的含水量比重型标准的最佳含水量高。如我国援建马达加斯加的公路路基大部分是高含水量残积粘性土(简称高含水量
In recent years, in the construction of primary and secondary roads and foreign aid roads, in order to improve the strength of subgrade and ensure the quality of pavement, heavy compaction standards have been adopted to control compaction. Practice shows that when the soil moisture content is close to the best standard of heavy water content (± 2 ~ 3%), the use of 12 to 15 tons of light roller roller compaction, subgrade can generally reach the heavy standard compaction degree, no doubt this Is a cost-effective technical measures. However, in humid and rainy regions, cohesive soil has a higher water content than the heaviest standard. For example, most of the highway embankment aided by Madagascar in our country is the high water content residual clay (referred to as high water content