![]() It is possible to produce calcined clay from lower grade clay.Ĭalcined clay does not need the high kiln temperatures associated with clinker production.Ĭalcined clay increases concrete’s strength by reducing porosity.Ĭredit a chemical reaction between the aluminates in the calcined clay and the calcium carbonate in the limestone for the reduced porosity. ![]() ![]() Kaolin from local sources reduces transportation costs. In LC3, calcined clay (CC) and limestone reduce the reliance on energy-intensive clinker. It is also an increasingly practical option. LC3 is a low-carbon alternative to ordinary Portland cement (OPC).
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