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Line 1: − 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 should be 0.4 (or 40%) − *A 100 mm layer of smaller grade pea gravel should be laid over the clear stone to reduce the chance of puncture damage to geotextile fabric. − −
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#REDIRECT [[Aggregates]]
[[Category:materials]]