Difference between revisions of "Gravel"

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All aggregates should meet the following criteria:
#REDIRECT [[Aggregates]]
<ul>
<li>Maximum wash loss of 0.5%.</li>
<li>Minimum durability index of 35.</li>
<li>Maximum abrasion of 10% for 100 revolutions and maximum of 50% for 500 revolutions.</li>
</ul>
====Underdrains====
<ul>
<li>Granular material for underdrains should be clear crushed 50 mm diameter stone graded in accordance with ASTM D 2940. </li>
<li>The void space ratio shall be 0.4 .</li>
<li>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. </li>
</ul>
 
 
 
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[[Category:materials]]

Latest revision as of 20:43, 5 March 2018

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