Difference between revisions of "Gravel"
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<li>Minimum durability index of 35.</li> | <li>Minimum durability index of 35.</li> | ||
<li>Maximum abrasion of 10% for 100 revolutions and maximum of 50% for 500 revolutions.</li> | <li>Maximum abrasion of 10% for 100 revolutions and maximum of 50% for 500 revolutions.</li> | ||
</ul | </ul> | ||
Granular material for underdrains should be clear crushed 50 mm diameter stone graded in accordance with ASTM D 2940. The void space ratio shall be 0.4 .</p> | Granular material for underdrains should be clear crushed 50 mm diameter stone graded in accordance with ASTM D 2940. The void space ratio shall be 0.4 .</p> | ||
[[Category:materials]] | [[Category:materials]] | ||
Revision as of 20:14, 4 July 2017
All aggregates should meet the following criteria:
- Maximum wash loss of 0.5%.
- Minimum durability index of 35.
- Maximum abrasion of 10% for 100 revolutions and maximum of 50% for 500 revolutions.
Granular material for underdrains should be clear crushed 50 mm diameter stone graded in accordance with ASTM D 2940. The void space ratio shall be 0.4 .