用土量对密度计法颗分结果的影响

Impact of Soil Quality Usage on Particle Analysis by Densimeter Method

通过试验分析了用土量对密度计法颗粒分析结果和土质分类的影响,结果表明:颗粒级配曲线随着试验用土量的增加向上抬升,但增幅随着用土量的增加而逐渐降低,沙土级配曲线比黏土级配曲线受用土量影响大;当试验用土量为20～50 g时,级配曲线没有显著变化,也不会影响土质的分类结果,而当用土量少于20 g时会显著影响级配曲线测量结果。

An experiment was done to analyze the impact of the soil quantity to soil distribution curve calculation and soil classification by densimeter method.The results show that the test soil quantity increases along with the increase of the particle grading curve,but with the increase of soil quantity the particle grading curve decreases gradually;the sand soil grading curve affected by soil quantity is larger than the clay grading curve;the soil grading curve didn＇t change significantly when the soil quantity varies between 20 g and 50 g,nor the soil classification,but if the soil quantity is less than 20 g,both of the above will be impacted significantly.