The World Cement Association (WCA) has welcomed the introduction of the revised BS 8500 standard, which allows for a wider range of Portland limestone cement (PLC) and ground granulated blast furnace slag (GGBFS) combinations in concrete. WCA chief executive officer Ian Riley, however, described the revision as ‘not breaking new ground but catching up.’ He called on the UK and other jurisdictions to begin enacting performance-based standards.
Riley said “It is good to see BSI making this change to concrete standards, however, this is still a very modest step forward. Firstly, ground limestone has been used successfully as a cement component in many markets for decades. Secondly, in order to produce concrete with the lowest embodied carbon and the highest circularity, we need to move away from standards that require particular recipes.”
