砂土相对密度试验研究和探讨

Experimental study and discussion on relative density of sand

为了提高砂土相对密度试验水平,对相对密度试验的影响因素进行了全方位的综合分析。对相对密度参数中的最大干密度、最小干密度、天然密度的试验方法做了对比分析;建立了最大、最小干密度、天然坡角之间良好的线性数值关系;对相对密度试验的适用范围作了修正;扩展了相对密度在力学参数上的应用;对相对密度试验方法和设备进行了改进;提高了其试验的自动化程度,使其试验标准化,数值唯一化。通过这些研究有助于提高相对密度的试验和应用水平。

In order to improve the sand relative density test quality,the influencing factors of the test are comprehensively analyzed.The test methods of maximum dry density,minimum dry density and natural density in relative density parameters are compared and analyzed;a linear numerical relationship between maximum and minimum dry density and natural slope angle is established;the applicable range of the relative density test is modified;the application of relative density in mechanical parameters is expanded;the relative density test method and equipment have been improved,such as improving the test automation degree to standardize the procedure and get more reliable results.These studies will help to improve the test and application level of relative density.