According to R 30 , long term conditioning is performed on loose ( uncompacted ) asphalt mixtures.

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Multiple Choice

According to R 30 , long term conditioning is performed on loose ( uncompacted ) asphalt mixtures.

Explanation:
Long-term conditioning models how asphalt ages in service, and that aging happens after the mix has been compacted in place so it has representative air voids and confinement. Because air exposure, heat transfer, and the structure of the compacted pavement control the rate and extent of aging, the standard practice uses compacted asphalt mixtures for long-term conditioning. Testing loose, uncompacted mix would not reproduce the same aging behavior, since the conditions around the binder and aggregate differ before and after compaction. So long-term conditioning is performed on compacted asphalt mixtures.

Long-term conditioning models how asphalt ages in service, and that aging happens after the mix has been compacted in place so it has representative air voids and confinement. Because air exposure, heat transfer, and the structure of the compacted pavement control the rate and extent of aging, the standard practice uses compacted asphalt mixtures for long-term conditioning. Testing loose, uncompacted mix would not reproduce the same aging behavior, since the conditions around the binder and aggregate differ before and after compaction. So long-term conditioning is performed on compacted asphalt mixtures.

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