论文部分内容阅读
一、国内外概况放射性同位素在水利、水电建设中有广泛的用途,已经受到人们的重视。核子密度/水分仪是放射性同位素应用的一个重要方面。在碾压坝施工中,工程质量优劣至关重要。在施工现场原位检测施工质量则是保证优质工程的重要措施之一。常规的用环刀法或套膜法测土料和沥青混凝土的容重;用烘干法或酒精燃烧法测含水量以及用抽提试验测沥青含量,费工费时,不能及时地把检测到的信息去反馈指导施工。随着机械化施工水平的提高,这种矛盾越
First, the overview at home and abroad Radioisotopes in water conservancy, hydropower construction has a wide range of uses, has received the attention of people. Nuclear density / moisture meter is an important aspect of radioisotope applications. In the roller compaction construction, the quality of the project is of crucial importance. In-situ inspection of construction quality at the construction site is one of the important measures to ensure quality engineering. Routine use of ring knife method or mantle method to test soil and asphalt concrete bulk density; Drying method or alcohol combustion method to measure the water content and the extraction test of asphalt content, time-consuming, can not be detected in time Information feedback to guide the construction. With the improvement of mechanized construction, the more contradictions