Committees responsible for this British Standard

The preparation of this British Standard was entrusted by Technical Committee B/516, Cement and lime, to Subcommittee B/516/11, Lime, upon which the following bodies were represented:

Autoclaved Aerated Concrete Products Association
British Lime Association
Building Limes Forum
Department of the Environment, Transport and the Regions — Building Research Establishment
English Heritage
Mortar Industry Association
Quarry Products Association
Co-opted members

The following bodies from the Technical Committee were also involved in the preparation of this standard:

British Cement Association
British Precast Concrete Federation Ltd.
Cement Admixtures Association
Cementitious Slag Makers Association
County Surveyors Society
Department of the Environment, Transport and the Regions — Highways Agency
Environment Agency
Society of Chemical Industry
UK Quality Ash Association

This British Standard, having been prepared under the direction of the Sector Policy and Strategy Committee for Building and Civil Engineering, was published under the authority of the Sector Policy and Strategy Committee on 6 November 2001

First published as BS 6463‑2, February 1984

Second edition as BS 6463‑102, 6 November 2001

The following BSI references relate to work on this British Standard:

Committee reference B/516/11
Draft for comment 99/105742 DC

Foreword

This part of BS 6463 has been prepared by Subcommittee B/516/11, Lime, under the direction of Technical Committee B/516, Cement and lime. It supersedes BS 6463‑2:1984 which is withdrawn.

BS 6463‑2:1984 brought together standard methods of chemical analysis for quicklime, hydrated lime and natural calcium carbonate including those for use in connection with water treatment, agriculture, steel making and chemical processing.

In that edition, atomic absorption methods were permitted. Since 1984 the use of atomic spectrometry has been widely used in this field of activity. These methods require special attention to calibration using reference materials.

This edition describes alternative analytical methods for several elements. Where available and appropriate, atomic spectrometry using atomic absorption (AAS) is recommended, although classical methods are still used by many laboratories for the determination of certain analytes and parameters. Repeatability and reproducibility for the test methods are not yet available. However, when the necessary testing has been done, this standard will be updated accordingly.

Other atomic absorption spectrometric (AAS) methods are available in BS EN 12485, and include determinations of antimony, arsenic, mercury and selenium.

These methods are to be preferred over the classical methods and it is recommended that they are adopted in specifications as the reference methods.

NOTE There are other atomic spectrometric methods that can give the sensitivity, precision and accuracy required by this part of BS 6463, the results of which can be calibrated against the methods described in this part of BS 6463. However, if a standard specifies a reference to BS 6463‑102, only methods actually given in this part of BS 6463 can be used in order to claim compliance with that standard.

A number of classical chemical methods that were given in BS 6463‑2:1984 have now been incorporated into other standards, and are no longer included in this part of BS 6463. These methods, and the standards in which they are now given, are for:

available lime (BS EN 459‑2);
silicon (BS EN 196‑2);
iron (BS EN 196‑2);
calcium (BS EN 12485);
magnesium (BS EN 12485);
water soluble calcium oxide and calcium hydroxide (BS EN 12485);
water insoluble constituents (BS EN 12485).

This revision of BS 6463 is published in three parts, as follows:

Part 101: Methods for preparing samples for testing;
Part 102: Methods for chemical analysis;
Part 103: Methods for physical testing.

Part 101 gives methods for sampling powdered, granular and lump quicklime and natural calcium carbonate, and of powdered hydrated lime, milk of lime and lime putty.

Part 103 gives the physical tests for quicklime, hydrated lime, lime putty and natural calcium carbonate, of which the tests for quicklime, hydrated lime and lime putty were previously included in BS 6463‑3 and BS 6463‑4.

A British Standard does not purport to include all 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 6463 describes methods for the chemical analysis of quicklime, hydrated lime and natural calcium carbonate. It describes both classical methods and methods which use atomic absorption spectrometry (AAS).

It gives classical chemical methods for:

fluorine, matter insoluble in acetic acid, matter insoluble in hydrochloric acid;
loss on ignition, neutralizing value;
free water in hydrated lime and also in lime putty;
total sulfur;
carbon dioxide in carbonate.

It gives flame atomic absorption spectrometric (AAS) methods for aluminium, cadmium, chromium, cobalt, copper, iron, lead, magnesium, manganese, nickel, silicon, silver and zinc.

2 Normative references

3 General requirements for testing

3.1 Number of tests

3.2 Reagents

3.3 Volumetric glassware

3.4 Preparation of the sample

3.5 Expression of results

4 Determination of major and minor constituents by classical methods

4.1 Determination of hydrochloric acid extractable fluoride

4.2 Determination of matter insoluble in acetic acid

4.3 Determination of matter insoluble in hydrochloric acid

4.4 Determination of loss on ignition

4.5 Determination of neutralizing value

4.6 Determination of free water in hydrated lime and lime putty

4.7 Determination of total sulfur

4.8 Determination of carbon dioxide in carbonate

5 Determination of minor constituents by flame atomic absorption spectroscopy

5.1 Determination of minor and trace elements in quicklime, hydrated lime and natural calcium carbonate

5.2 Determination of lead

Bibliography

BS 6463-102:2001

Quicklime, hydrated lime and natural calcium carbonate - Methods for chemical analysis

Current

Published:

6 Nov 2001