National foreword

This British Standard has been prepared by Technical Committee B/502. It is the English language version of EN 932‑1:1996Tests for general properties of aggregates Ð Part 1: Methods for sampling published by the European Committee for Standardization (CEN).

It forms part of a group of European Standards dealing with test methods for aggregates which are being developed by CEN/TC 154 to verify requirements which will be specified in European product standards for aggregates for various end uses.

It is intention that this standard will be included in a `package' of European Standards to be declared by CEN/TC 154 and when all the associated European test methods for aggregates are available, this Part of this European Standard will supersede BS 812 : Part 102 : 1989 Testing aggregates Part 102. Methods for sampling.

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

Summary of pages

This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 18, an inside back cover and a back cover.

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:

Association of Consulting Engineers

Association of Lightweight Aggregate Manufacturers

British Aggregate Construction Materials Industries

British Cement Association

British Iron and Steel Producers' Association

British Precast Concrete Federation Ltd.

British Ready Mixed Concrete Association

Department of the Environment

Department of the Environment (Building Research Establishment)

Department of Transport (Highways Agency)

Electricity Association

Institute of Concrete Technology

Institution of Civil Engineers

Institution of Structural Engineers

Sand and Gravel Association Limited

Society of Chemical Industry

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

British Civil Engineering Test Equipment Manfacturers' Association

County Surveyors' Society

Department of Trade and Industry (National Measurement Accreditation Service)

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 May 1997

This European Standard was approved by CEN on 1996-07-26. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

Foreword

This European Standard has been prepared by Technical Committee CEN/TC 154, Aggregates, the Secretariat of which is held by BSI.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 1997, and conflicting national standards shall be withdrawn at the latest by February 1997.

This European Standard is one of a series of standards for tests for general properties of aggregates as listed below.

Test methods for other properties of aggregates are covered by Parts of the following European Standards:

According to CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.

1 Scope

This European Standard specifies methods for obtaining samples of aggregates from deliveries, preparation and processing plants including stocks.

The aim of sampling is to obtain a bulk sample that is representative of the average properties of the batch.

The methods specified in this standard are also suitable for obtaining sampling increments which may be tested separately.

Methods to be used for sample reduction are also given.

The methods specified in this European Standard are based on manual procedures. Mechanical, or automatic sampling and sample reduction may also be used.

Criteria for the design and the assessment of such equipment are given in annex A.

The methods specified in this European Standard are limited to civil engineering purposes.

2 Normative references

3 Definitions

3.1 batch

3.2 sampling increment

3.3 bulk sample

3.4 representative sample

3.5 subsample

3.6 laboratory sample

3.7 sampler

4 Principles of sampling

5 Bulk sample and sampling increment quantity and number

6 Sampling plan

7 Apparatus

8 Sampling procedures

8.1 General

8.2 Sampling from stationary conveyor belts

8.3 Sampling at belt and chute discharge points

8.4 Sampling of pneumatically transported aggregates

8.5 Sampling of packed aggregates

8.6 Sampling of material in bucket conveyors, bucket loaders, or grabs

8.7 Sampling from a silo

8.8 Sampling from stockpiles

8.9 Sampling from railway wagons, lorries and ships

9 Sample reduction

9.1 General

9.2 Reduction of a bulk sample using a riffle box

9.3 Reduction of sampling increments using a riffle box

9.4 Reduction of a bulk sample by quartering

9.5 Reduction of sampling increments by quartering

9.6 Sample reduction by fractional shovelling

10 Marking, packaging and dispatch of the samples

11 Sampling report

BS EN 932-1:1997

Tests for general properties of aggregates - Methods for sampling

Current

Published:

15 May 1997