AS 1141.24-1997

1 - AS 1141.24-1997 METHODS FOR SAMPLING AND TESTING AGGREGATES - AGGREGATE SOUNDNESS - EVALUATION BY EXPOSURE TO SODIUM SULPHATE
1 - 1 SCOPE
1 - 2 APPLICATION
1 - 3 PRINCIPLE
1 - 4 REFERENCED DOCUMENTS
2 - 5 DEFINITIONS
2 - 5.1 Coarse aggregate
2 - 5.2 Fine aggregate
2 - 5.3 Mixed aggregate
2 - 5.4 Separating sieve
2 - 6 REAGENTS
2 - 7 APPARATUS
3 - 8 SAMPLING
3 - 9 PREPARATION OF SATURATED SODIUM SULFATE SOLUTION
4 - 10 PREPARATION OF TEST FRACTIONS
5 - 11 PROCEDURE
6 - 12 CALCULATIONS
6 - 12.1 Individual fraction percent loss
7 - 12.2 Weighted percent loss
7 - 12.3 Weighted percent loss for mixed aggregates
7 - 13 REPORT
8 - APPENDIX A - SODIUM SULFATE SOUNDNESS-TYPICAL CALCULATIONS
8 - A1 EXAMPLE 1- COARSE AGGREGATE
9 - A2 EXAMPLE 2- FINE AGGREGATE

Determines the loss of mass when subjected to repeated wetting and drying with saturated sodium sulfate solution to approximate weathering of aggregate.

This Standard sets out the method for the testing of aggregates to determine their loss of mass due to disintegration when exposed to sodium sulfate solutions over repeated cycles of wetting and drying. The Standard furnishes information helpful in judging the soundness of aggregate subject to weathering action, particularly when adequate information is not available from service records of the material exposed to actual weathering conditions.

First published as part of AS 1141-1974.
Revised and redesignated in part as AS 1141.24-1997.