CALCULATIONS 5.1 Calculate the percentage of each or a combination of deleterious materials: PDW ï½ï´100 Where: P = Percentage of deleterious matter by weight D = Weight of deleterious substances, g W = Weight of total sample (retained on No. 4 [4.75 mm] or No. 8 [2.36 mm]), g.est the material retained on the No. 8 (2.36 mm) sieve for compliance with the specification requirements if the sample contains an aggregate that predominately passes the No. 4 (4.75 mm) sieve. 8.7 Remove any material other than coated particles of aggregate that will slake down during the test.
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