Designation: D 42263 (Reapproved 2002)Standard Test Method for Particle-Size Analysis of Soils颗粒分析试验标准方法1. Scope范围 1.1 This test method covers the quantitative determination of the distribution of particle sizes in soils. The distribution of particle sizes larger than 75 m (retained on the No. 200 sieve) is determined by sieving, while the distribution of particle sizes smaller than 75 m is determined by a sedimentation process, using a hydrometer to secure the necessary data (Note 1
