联合测定法中液塑限含水率的求取

Calculating method of moisture content limitationfor combined measure method of liquid and plastic limits

针对《土工试验方法标准》GB/T50123-1999液塑限联合测定法中的不足,推导出了高含水率的点和其余两点连成二条直线在2mm处含水率的差值的表达式,以及在误差允许范围内液塑限的数学计算公式。

According to liquid and plastic limits measure method from ＂Standard for soil test method＂ （GB/T50123-1999）, the point of high moisture content and other two points can form two straight lines. The difference expression of moisture content has been given at 2mm of the two lines, and expression for liquid and plastic limits, which is fallen in the scope allowed by error, is obtained, too. Tests show that it can greatly raise effectiveness, save on some resource, and has some practice value to engineering.