BS 8443:2005

Committees responsible
Foreword
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviations
4 Requirements
5 Sampling
6 Conformity control
7 Evaluation of conformity
8 Marking and labelling
Annex A (normative) Determination of washout
Annex B (normative) Determination of the drying shrinkage of
                    concrete
Annex C (normative) Determination of segregation in concrete
Annex D (normative) Stability of foamed concrete

BS 8443 is intended to establish the suitability of seven categories of special purpose concrete admixtures that are in widespread use in the United Kingdom and that are not covered by BS EN 934-2.

This British standard specifies terms, definitions and requirements for special purpose admixtures in order to establish suitability for use in concrete conforming to BS EN 206-1.

The admixtures covered are listed as follows; they are intended for use in plain, reinforced, foamed, prestressed and semi-dry concrete as appropriate. The concrete can be site mixed, ready mixed or pre-cast:

• underwater concrete admixtures;

• shrinkage reducing admixtures;

• corrosion inhibiting admixtures;

• pumping aids;

• segregation reducing admixtures;

• foaming admixtures;

• semi-dry concrete admixtures.

Provisions governing the practical application of admixtures in the production of concrete, i.e. requirements concerning composition, mixing, placing, curing, etc. of concrete containing admixtures are not within the scope of this standard.