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利用核子水分密度仪测定土、石、混凝土、沥青等建筑材料原位密度和含水量具有无损、快速的优点 ,已成为国际上土石方工程碾压质量检测和控制的重要手段 ,并在我国大中型工程土建施工中逐渐推广应用。 1999年黄河下游大堤加高施工中利用核子仪测定土体干密度、含水量得到了推广。本文通过该仪器在水利工程中的应用和室内试验 ,分析了影响核子仪测试精度的因素 ,并提供了几种常见材料的测定结果、取值、偏差及偏差纠正的经验 ,供工作中参考
The determination of in situ density and water content of construction materials such as soil, stone, concrete, asphalt and the like by using the nuclear moisture density instrument has the advantages of nondestructive and rapidness and has become an important means of testing and controlling the rolling quality of earthwork in the world. Engineering civil construction gradually promote the application. In 1999, the downstream embankment in the lower reaches of the Yellow River increased the use of nuclear devices to measure the dry density of soil, and the water content was popularized. In this paper, through the application of the instrument in water conservancy project and laboratory test, the paper analyzes the factors that affect the test accuracy of nuclear instrument, and provides the experience of the measurement results, values, deviations and deviation correction of several common materials for reference in the work