摘要
在路基压实质量检测和控制中,压实密度是重要指标之一。目前国内路基施工现场密度试验主要用灌砂法和灌水法两种方法,然而由于灌砂法具有测试效率低的缺点,灌水法具有测试精度低的缺点,工程上迫切要求一种快速方便、精度较高的密度试验方法,气囊式容积测定仪的研制成功正好能够满足这一要求。文中介绍了气囊式容积测定仪的构成和灵敏度及其检测方法,通过室内和现场气囊法、灌砂法和灌水法3种方法对比试验,利用随机因子分析方法,研究了气囊法测试精度。试验结果表明,气囊式容积测定仪仪器轻便,操作简单,测试精度较高。
Density is one of key indexes for detecting and controlling the quality of compacted soil.Sand replacement method and water replacement method are used to test the density of compacted soil in the field of roadbed construction in our country at present. However, because of the shortcomings of inefficient detection for sand replacement method and low precision for water replacement method, it is necessary to develop a method with faster detection speed and higher precision,and then rubber balloon volumemeter has been developed to meet the demand. The structure,principle, sensitivity and test method of rubber balloon volumemeter are introduced. Detection precision of the instrument is assessed by comparisons between the tests with balloon method, sand replacement method and water replacement method in lab and itsitu, and with analytical method of random factor. The instrument is light,simple,and convenient to be operated with high precision.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2003年第5期619-623,共5页
Chinese Journal of Geotechnical Engineering
基金
铁道部建设司工程建设规范科研项目(铁建技字2001第6号)
关键词
路基压实密度
气囊检测方法
灌砂法
质量检测
随机因子
roadbed
density
rubber balloon volumemeter
sand replacement method
water replacement method
balloon method
random factor
