不同试验方法检测人工砂石粉含量的差异分析

Analysis on the Difference of Content of Artificial Sand and Gravel Powder Detected by Different Test Methods

结合云南省澜沧江乌弄龙工程,分别采用干筛法和洗筛法对常态砂和碾压砂的石粉含量进行试验和检测。通过试验结果分析证明,相对于干筛法,洗筛法精度更高,也更接近真实结果,两种方法检测的人工砂石粉含量和微粒含量结果存在一定线性关系。常态砂洗筛法石粉含量较干筛平均增加4.5%,碾压砂洗筛法石粉含量较干砂平均增加3.0%。

Paper yunnan lancang river dragon project,respectively by the method of dry sieve method and washing sieve,the norm of the sand and crushed sand stone powder content on test and inspection,by analyzing the test results prove that,compared with the dry sieve method,washing sieve of higher precision,and closer to the real results,two kinds of methods of artificial sand powder content and particle content results there exist certain linear relationship.Compared with dry screening method,he average content of stone powder of normal sand washing sieve method increased by 4.5%compared with that of dry sieve.The content of stone powder in rolling sand washing and sieve method increased by 3.0%on average compared with that of dry sand.