To measure the resistance of bituminous mixtures to stripping of the asphalt from the rock particles  and is generally used to evaluate the mineral aggregate, It may be used to judge the adhesive  capacity of the bituminous material,. Stone screening for use in seal coats or open graded mixes are usually subjected to this test, The test is applied to the aggregate fraction passing 3/8 inch sieve and retained on No.  8 sieve.

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