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Type 4 Recycled/Crushed Asphalt
Description
Type 4 is a sub-base that ranges between 50–100% of crushed asphalt and can be mixed with crushed rock or recycled aggregate
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Typical Uses
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Used to create an easily compacted load bearing sub-base and backfill, due to its cohesive qualities
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It is often used as a hard core for temporary roadways, bridleways, site compounds and as a sub-base
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Normally supplied as a 0-50mm grade, it will work well even if not surfaced for some time
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​Useful Information
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It does not comply to Type 1 due to the possible high bitumen binder content
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Not to be confused with other materials such as road planings, which are not processed and do not comply to any grading
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100% crushed asphalt will not compact as tightly as road planings due to the shape created by crushing
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Though not sold as a permeable product it will have good drainage qualities due to the bitumen content