摘要
按照γ射线透射法和背散射法测量密度的原理以及测量最大深度为500mm的要求,设计了实验测量装置。通过实验确定了放射源、探测器、最佳几何响应、率定系统、数学模型、计算程序、测量线路和微机。试制和改进试制了30套ND-50核子密度仪,应用于十余个水利水电工程碾压混凝土坝的质量控制,总方量超过5×10~5m^3。
An experimental apparatus and a prototype have been designed to measure density of concrete according to the principle of backscattering and transmission of γ ray with a measuring depth of up to 500mm. Through experiments, the source, detector, optimal geometry, calibration system, math model, calculating programs, electronics and microcomputer were established. Thirty sets of ND-50 nuclear density gauge have been trial-produced or reproduced, and applied to control the quality in roller compacted concrete dam (RCCD). for at least 5 γ 105 m3 in more than ten hydraulic and hydroelectric projects.
出处
《核技术》
CAS
CSCD
北大核心
1991年第10期616-622,共7页
Nuclear Techniques
关键词
核子密度仪
透射
背散射
Nuclear density gauge Transmission BackscatteringDensity geometry response Roller compacted concrete dam (RCCD)Engineering quality control
