Committees responsible for this British Standard

The preparation of this British Standard was entrusted to Technical Committee B/502, Aggregates, upon which the following bodies were represented:

Aggregate Concrete Block Association
Association of Consulting Engineers
Association of Lightweight Aggregate Manufacturers
British Aggregate Construction Materials Industries
British Cement Association
British Civil Engineering Test Equipment Manufacturers' Association
British Geological Sciences
British Iron and Steel Producers' Association
British Precast Concrete Federation Ltd.
British Ready Mixed Concrete Association
County Surveyors' Society
Department of the Environment
Department of the Environment (Building Research Establishment)
Department of Transport
Department of Transport (Transport Research Laboratory)
Electricity Association
Institute of Concrete Technology
Institution of Civil Engineers
Institution of Highways and Transportation
Institution of Structural Engineers
Local Authority Organizations
Sand and Gravel Association Limited
Society of Chemical Industry

The following bodies were also represented in the drafting of this standard, through subcommittees and panels:

Department of Trade and Industry (National Measurement Accreditation Service)
Department of Transport (Highways Agency)

This British Standard, having been prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 August 1995

First published August 1975 Second edition August 1995 Third edition February 1999

The following BSI references relate to the work on this standard:

Committee reference B/502 Draft for comment 94/106633 DC

Amendments issued since publication

Foreword

This Part of BS 812 has been prepared by Technical Committee B/502. This edition introduces technical changes but does not reflect a full review or revision of the standard. Work on testing procedures for aggregates is being carried out in Europe under the auspices of CEN/TC 154, Aggregates. The methods described in this Part of BS 812 are included in the programme of work of CEN/TC 154 and will be superseded by European Standards which will be published in due course.

This standard supersedes BS 812 : Part 2 : 1975, which is withdrawn.

In this edition, for health and safety reasons, the use of toluene has been replaced by the use of kerosene in the method for the determination of bulk density of filler. The tests described in this Part are now based on particle density rather than relative density and, because the determination of moisture content of aggregates, formerly included in this Part, is now covered by BS 812 : Part 109, the title of the 1975 edition, Methods for determination of physical properties is no longer appropriate and has been amended to reflect the revised content. The opportunity has also been taken to update references to other Parts of BS 812 that have been published following the 1975 revision of this Part. BS 812 comprises the following Parts:

A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application.

Compliance with a British Standard does not of itself confer immunity from legal obligations.

1 Scope

This Part of BS 812 describes methods for the determination of the particle density, water absorption, bulk density, voids and bulking of aggregates and of the particle density, bulk density and voids of filler.

Some of the tests are intended for use in obtaining assurance that material complies with British Standard or other requirements, for research, production control or assessment of variation. However, other methods are not intended for assurance testing and their suitability for other purposes is defined.

NOTE The density terms used are defined in clause 2 of BS 812 : Part 100 : 1990.

2 References

2.1 Normative references

2.2 Informative references

3 Reporting

3.1 General

3.2 Certificate of sampling

4 Significance of results

5 Determination of particle densities and water absorption

5.1 General

5.2 Sampling

5.3 Method for aggregates all larger than 10 mm

5.4 Method for aggregates between 40 mm and 5 mm

5.5 Method for aggregates 10 mm nominal size and smaller

5.6 Alternative method for aggregates between 40 mm and 5 mm nominal size

5.7 Method for determination of particle density of filler

6 Determination of bulk density, voids and bulking

6.1 General

6.2 Sampling

6.3 Method for the determination of bulk density, and calculation of voids and bulking of aggregate

6.4 Method for the determination of bulk density of filler in kerosene

6.5 Method for the determination of voids of dry compacted filler

BS 812-2:1995

Testing aggregates - Methods for determination of density

Current

Published:

15 Aug 1995