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BS 812-121:1989

Current

Current

The latest, up-to-date edition.

Testing aggregates Method for determination of soundness

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-10-1989

€140.23
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Committees responsible
Foreword
1 Scope
2 Definitions
3 Principle
4 Sampling
5 Apparatus
6 Reagents
7 Preparation of test portions and specimens
8 Procedure
9 Calculation and expression of test results
10 Precision
11 Test report
Appendix A - Recommended procedure for determining
             the magnesium sulphate soundness value
             for other size fractions of aggregate
Appendix B - Details of the evaluation of precision data
Publications referred to

Aggregates passing a 14.0 mm test sieve are subjected to cycles of immersion in magnesium sulphate solution followed by oven-drying. A method for other sizes of aggregates is also described.

Committee
B/502/6
DevelopmentNote
Supersedes 88/10129 DC (10/2005) Reviewed and confirmed by BSI, November 2011. (10/2011)
DocumentType
Standard
Pages
12
PublisherName
British Standards Institution
Status
Current
SupersededBy

This Part of BS 812 describes the method for determining the soundness of aggregates by subjecting the aggregate to cycles of immersion in a saturated solution of magnesium sulphate followed by oven-drying. The method is applicable to aggregate passing a 14.0 mm test sieve but is retained on a 10.0 mm test sieve.

NOTE 1 The majority of aggregates can be tested for soundness using this method. Precision has been established for the rock types listed in Table 1. The test may not be suitable for all rock types and reservations have been expressed elsewhere in respect of some carbonate aggregates and some aggregates having a high proportion of magnesium bearing minerals or of cryptocrystalline quartz.

For other size fractions, a recommended method is described in appendix A.

NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.

PD 6682-6:2003 Aggregates Aggregates for unbound and hydraulically bound materials for use in civil engineering works and road construction. Guidance on the use of BS EN 13242
BIS IS 15393-5 : 2003(R2009) ACCURACY (TRUENESS AND PRECISION) OF MEASUREMENT METHODS AND RESULTS - PART 5: ALTERNATIVE METHODS FOR THE DETERMINATION OF THE PRECISION OF A STANDARD MEASUREMENT METHOD
BS 594-1:2002 Hot rolled asphalt for roads and other paved areas Specification for constituent materials and asphalt mixtures
BS 594-1:1992 Hot rolled asphalt for roads and other paved areas Specification for constituent materials and asphalt mixtures
BS 4987-1:2001 Coated macadam (asphalt concrete) for roads and other paved areas Specification for constituent materials and for mixtures
PD 6682-2:2003 Aggregates Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas. Guidance on the use of BS EN 13043
PD 6682-8:2004 Aggregates Aggregates for railway ballast. Guidance on the use of BS EN 13450
PD 6682-7:2003 Aggregates Armourstone. Guidance on the use of BS EN 13383
PD 6682-9:2003 Aggregates Guidance on the use of European test method standards
PD 6682-1:2003 Aggregates Aggregates for concrete. Guidance on the use of BS EN 12620
ISO 5725-5:1998 Accuracy (trueness and precision) of measurement methods and results — Part 5: Alternative methods for the determination of the precision of a standard measurement method
BS ISO 5725-5:1998 Accuracy (trueness and precision) of measurement methods and results Alternative methods for the determination of the precision of a standard measurement method
S.R. 24:2004 GUIDANCE ON THE USE AND APPLICATION OF EUROPEAN TEST METHOD STANDARDS FOR AGGREGATES
BS 812-100:1990 Testing aggregates General requirements for apparatus and calibration
S.R. 17:2004 GUIDANCE ON THE USE OF I.S. EN 13043:2002 - AGGREGATES FOR BITUMINOUS MIXTURES AND SURFACE TREATMENTS FOR ROADS, AIRFIELDS AND OTHER TRAFFICKED AREAS

BS 812-113:1990 Testing aggregates Method for determination of aggregate abrasion value (AAV)
BS 812-112:1990 Testing aggregates Method for determination of aggregate impact value (AIV)
BS 812-100:1990 Testing aggregates General requirements for apparatus and calibration
BS 812-101:1984 Testing aggregates Guide to sampling and testing aggregates
BS 812-110:1990 Testing aggregates Methods for determination of aggregate crushing value (ACV)
BS 812-111:1990 Testing aggregates Methods for determination of ten per cent fines value (TFV)

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