Difference between revisions of "Sand"
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− | + | [[File:PSD sand.jpg|thumb|Particle size distribution graph for ASTM C33 sand, as described in table]] | |
− | + | ||
− | + | *Coarse sand for LID construction shall be washed clean and free of toxic materials. | |
− | + | *The pH of the sand shall be ≤ 7.0. | |
− | + | *The coarse sand shall have a fineness modulus index between 2.8 and 3.1 according to [https://www.astm.org/Standards/C33 ASTM C33/C33M], or otherwise meet the gradation below. | |
− | + | ||
− | + | {|class="wikitable" | |
− | + | |+ Particle size distribution | |
− | + | |- | |
− | + | !style="background: darkcyan; color: white"|Sieve | |
− | + | !style="background: darkcyan; color: white"|Percent passing | |
− | + | |- | |
− | + | |9.5 mm||100 | |
− | + | |- | |
− | + | |4.75 mm (No.4)||95 - 100 | |
− | + | |- | |
− | + | |2.36 mm (No.8)||80 - 100 | |
− | + | |- | |
− | + | |1.18 mm (No.16)||50 - 85 | |
+ | |- | ||
+ | |0.60 mm (No.30)||25 - 50 | ||
+ | |- | ||
+ | |0.30 mm (No.50)||5 - 30 | ||
+ | |- | ||
+ | |0.15 mm (No.100)||0 - 10 | ||
+ | |- | ||
+ | |0.075 mm (No.200)||≤ 3 | ||
+ | |} | ||
+ | |||
[[category: materials]] | [[category: materials]] |
Latest revision as of 18:48, 15 September 2020
- Coarse sand for LID construction shall be washed clean and free of toxic materials.
- The pH of the sand shall be ≤ 7.0.
- The coarse sand shall have a fineness modulus index between 2.8 and 3.1 according to ASTM C33/C33M, or otherwise meet the gradation below.
Sieve | Percent passing |
---|---|
9.5 mm | 100 |
4.75 mm (No.4) | 95 - 100 |
2.36 mm (No.8) | 80 - 100 |
1.18 mm (No.16) | 50 - 85 |
0.60 mm (No.30) | 25 - 50 |
0.30 mm (No.50) | 5 - 30 |
0.15 mm (No.100) | 0 - 10 |
0.075 mm (No.200) | ≤ 3 |