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Construction materials. Alkali-activated cementitious material and concrete. Specification
This PAS specifies the performance requirements for alkali-activated cementitious material comprising aluminosilicate main constituents and an alkali activator. An AACM (including the activator) may contain Portland cement only at a content of less than 5% mass of binder solids, and may contain subsidiary constituents not exceeding 25% of the mass of the cementitious material.
It also specifies a means of assessing concrete obtained through the use of such cementitious material for performance and durability, and sets requirements for the alkali-activating component and the aluminosilicate powder component of these concretes.
The term “geopolymer” is not used in this PAS, but this does not exclude its use for descriptive purposes in conjunction with alkali-activated cementitious materials.
This PAS does not:
set detailed requirements for the composition of the alkali-activated cementitious material;
specifically address applications for such materials as renders, screeds, mortars or repair materials, although it does not exclude the possibility that such materials could be used for such purposes; or
cover the use of any material classified as hazardous waste.
Hazardous waste is defined in the Technical Guidance of the UK Environment Agency () and includes radioactive materials [16].
This PAS is for use by manufacturers of alkali-activated cementitious material, producers of prefabricated concrete elements containing alkali-activated cementitious material and producers of concrete containing alkali-activated cementitious material which is to be precast, delivered ready-mixed, or mixed in situ.
It is also of interest to designers and specifiers as it provides a means of assessing the suitability of AACM concrete mixtures for typical construction uses.
Attention is drawn to The Personal Protective Equipment Regulations 2002 [9] and The Health and Safety at Work etc Act 1974 [8].
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