关键词: 含水率, 加权法, 非黏性土, 砾类土, 饱和面干

Abstract: Gravel soil is widely used in engineering construction, and its water content is a very important index, however the existing test method is time consuming. Therefore, we proposed a rapid detection method on gravel soil moisture content based on the weighting method, in which the water content replacing method of saturated surface drying and virtual specific gravity method was combined. Meanwhile, the existing measurement operation of saturated surface dry moisture was improved and optimized. The results of weighted method and drying method were compared and analyzed by various mathematical methods, including absolute error, square sum of mean square deviation, correlation coefficient and F significance test analysis method. The analysis of test data proved that the results by weighted method and drying method were the same. This method can provide a new way for rapid determination of soil water content in the field.

Key words: water content, weighting method, non-clay soil, gravel soil, saturated surface drying;