Difference between revisions of "Asphalt"
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| − | '''Asphalt''' is a | + | '''Asphalt''' (known in the industry as Hot Mix Asphalt, or HMA), is a combination of aggregates (usually crushed stone and some sand), filler (cement, hydrated lime or stone dust) and a [[coal|bituminous]] binder called "asphalt cement". Additives are sometimes used (e.g. rubber from old car tires) . Reclaimed "asphalt" from old roads, called RAP (recycled asphalt pavement), is also, increasingly, being used. |
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| + | When hot, HMA is pliable and can be rolled flat to create a smooth, durable, water proof substrate. | ||
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[[Category:Construction]] | [[Category:Construction]] | ||
Revision as of 22:47, May 20, 2008
Asphalt (known in the industry as Hot Mix Asphalt, or HMA), is a combination of aggregates (usually crushed stone and some sand), filler (cement, hydrated lime or stone dust) and a bituminous binder called "asphalt cement". Additives are sometimes used (e.g. rubber from old car tires) . Reclaimed "asphalt" from old roads, called RAP (recycled asphalt pavement), is also, increasingly, being used.
When hot, HMA is pliable and can be rolled flat to create a smooth, durable, water proof substrate.