A unique concrete mix was designed for the project to support the complex technical building’s requirements.
Mace used 7,500m3 of structural concrete with a composition of 75% ground granulated blast furnace slag (GGBS) instead of traditional Portland cement. A less carbon intensive alternative, this led to a 48% overall carbon reduction and a saving of 1,373 tonnes of carbon, the contractor said.
The composition of concrete mix was guided by specific experimental shielding properties that required the use of high density aggregates and a reduced cement content to minimise the risk of thermal cracks occurring as a result of the heat generated during the concrete curing process.
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