ABSTRACT
This paper is the culmination of more than 5 years of studies carried out on the durability of cement replacement materials, and deals with the final series of concrete mixes, mainly containing SRPC and SRPC/ GGBS blends of cement. Earlier results from the main series of over 20 concretes tested at 2 years for sulphate resistance[1] and then at 5 years for the same property[2], followed by a paper on the mechanisms and protection afforded by GGBS[3] and on the performance of Portland and blastfurnace slag cement concretes in marine environments[4] have provided a suite of papers. All these previous results together with data from site structures were summarised in a BRE Information Paper which compared the properties and performance of slag cement concretes with those of conventional Portland cement concretes of similar mix design[5]. A number of recommendations were made for the effective and proper use of cementitious blastfurnace slag in concrete from the results of these studies which with similar work carried out using pulverised fuel ash in concrete[6-8] have provided important input to BRE Digest 363[9], British Standards Specifications[10-11] and to Codes of Practice[12-13].
