核子密度仪用于土石混填地基检测适用性研究  

Study on the applicability of nuclear densitometer to the compaction quality detection of the foundation filled soil-rock mixture

作　　者：赖余斌 洪巧章 Lai Yubin;Hong Qiaozhang(China Southern Power Grid Energy Development Research Institute Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]南方电网能源发展研究院有限责任公司,广东广州510000

出　　处：《山西建筑》2021年第1期64-67,共4页Shanxi Architecture

摘　　要：开展了核子密度仪应用于不同工况下土石混合料填方地基压实质量检测的适用性研究。结果显示,核子密度仪在各种工况下的含水率测试结果相对准确,而湿密度测试结果则受含石量影响产生不同程度的误差,中低含石量工况下湿密度测试误差较小,大约在5%以下,可以使用核子密度仪进行压实质量检测;而高含石量工况测试误差较大,可能超过10%甚至更高,此时需要寻求更为准确的测试方法进行压实质量评价。The applicability of nuclear densitometer for the compaction quality detection of soil and rock mixture filled foundation under different working conditions is studied.The results show that the moisture content test results of the nuclear density meter are relatively accurate under various conditions,while the wet density test results are affected by the stone content,resulting in different degrees of error.The wet density test error is small under the condition of medium and low stone content,which is about less than 5%.The nuclear density meter can be used to test the compaction quality.However,the error of high stone content condition test is large,which may exceed 10%or even higher.At this time,it is necessary to seek more accurate test method to evaluate the compaction quality.

关 键 词：土石混合料 核子密度仪 压实质量 灌水法 

分 类 号：TU463[建筑科学—结构工程]