AS1141.23-2009 国外国际规范.pdf

1 AS 1141.23—2009 Australian Standard® A S 1 1 4 Methods for sampling and testing aggregates 1 . 2 3 — 2 Method 23: Los Angeles value 0 0 9 1 SCOPE This Standard sets out the procedure for the determination of the loss, on abrasion, of aggregate particles by means of the Los Angeles abrasion testing machine. The test is applied to aggregate particles from crushed rock, gravel or crushed slag, or to crushings derived from rock spalls or drill cores. NOTE: This method is a modification of ASTM C131. 2 REFERENCED DOCUMENTS The following documents are referred to in this Standard: AS 1141 Methods for sampling and testing aggregates 1141.2 Method 2: Basic testing equipment 1141.3.1 Method 3.1: Aggregates 1141.15 Method 15: Flakiness index 1152 Specification for test sieves ASTM C131 Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine 3 APPARATUS The following apparatus, complying with the relevant provisions of AS 1141.2, is required: 9 (a) Balance—of at least 16 kg capacity with a limit of performance not exceeding ±0.5 g. 0 0 2 l (b) Brushes—suitable for cleaning sieves, containers and machine. u J 5 0