ABSTRACT
British Standards also now permit the incorporation of up to 1 % additives to improve the manufacture or properties of the cement. This option has already been exploited in the introduction into the UK of new multi-purpose cements having air-entraining properties in mortars to improve plastic properties and in concrete to improve frost resistance. The special nature of these cements is clearly indicated on the packaging and the technical literature. The option also permits the use of a wider range of grinding aids during cement production which brings benefits in terms of economy of production.
