The Structural Engineer > Archive > Volume 85 (2007) > Issues > Issue 9 > One Coleman Street - a case study in the use of secondary materials in concrete
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One Coleman Street - a case study in the use of secondary materials in concrete

The construction of a prime 18 000m2 office development at One Coleman Street in the heart of London is the first major use of secondary aggregates in concrete in London specifically to reduce the environmental impact of the concrete materials. It is also the first major use in concrete of china clay stent coarse aggregate outside the locality of its production in the South-West of the UK. Environmental impact of the concrete was further reduced through the use of higher proportions of fly ash as a secondary cementitious material than are currently typical for structural concrete. Bryan Marsh, BSc, PhD, CEng, MICE, FICT, FCS Arup Materials Consulting