A Los Angeles abrasion test procedure, which indicates the toughness and abrasioncharacteristics of aggregate. A coarse aggregate sample is subjected to abrasion,impact and grinding in a rotating steel drum containing a specified number of steelspheres. The mass retained on a specified sieve is subtracted from the original massto give the percentage of the total that has broken down and passed through; an L.A.abrasion loss of 40 means that 40 % of the original sample passed.
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<element name="LosAngelesAbrasionTest" type="diggs:LosAngelesAbrasionTestType" abstract="false" substitutionGroup="diggs:AbstractLaboratoryTestProcedure"><annotation><documentation>A Los Angeles abrasion test procedure, which indicates the toughness and abrasion characteristics of aggregate. A coarse aggregate sample is subjected to abrasion, impact and grinding in a rotating steel drum containing a specified number of steel spheres. The mass retained on a specified sieve is subtracted from the original mass to give the percentage of the total that has broken down and passed through; an L.A. abrasion loss of 40 means that 40 % of the original sample passed.</documentation></annotation></element>