粒组 | 颗粒名称 | 粒径d的范围(mm) | |
粗粒 | 砾粒 | 粗粒 | 20 < d ≤ 60 |
中粒 | 5 < d ≤ 20 | ||
细粒 | 2 < d ≤ 5 | ||
砂粒 | 粗砂 | 0.5 < d ≤ 2 | |
中砂 | 0.25 < d ≤ 0.5 | ||
细砂 | 0.075 < d ≤ 0.25 | ||
细粒 | 粉粒 | 0.005 < d ≤ 0.075 | |
黏粒 | d ≤ 0.005 |