An extraction is run to determine the percentage of fines ( minus 75 μm ( #200 ) ) in an asphalt mixture.

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Multiple Choice

An extraction is run to determine the percentage of fines ( minus 75 μm ( #200 ) ) in an asphalt mixture.

Explanation:
In asphalt testing, the extraction procedure is used to determine how much binder is in the mixture. A solvent dissolves the asphalt binder, the binder is recovered and weighed, and from that you calculate the binder content. Determining fines—what proportion passes a 75 μm (No. 200) sieve—is a matter of sieve analysis of the aggregate gradation, not of the extraction procedure. Often, fines are assessed after binder removal, but the primary purpose of extraction is to measure binder content, not to quantify fines. So the statement is not correct.

In asphalt testing, the extraction procedure is used to determine how much binder is in the mixture. A solvent dissolves the asphalt binder, the binder is recovered and weighed, and from that you calculate the binder content. Determining fines—what proportion passes a 75 μm (No. 200) sieve—is a matter of sieve analysis of the aggregate gradation, not of the extraction procedure. Often, fines are assessed after binder removal, but the primary purpose of extraction is to measure binder content, not to quantify fines. So the statement is not correct.

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