Introduction of a Calcined Clay-Limestone based Cement in Concrete Manufacture in Latin America
- Vol.94(2), Feb
- Mumbai ACC LTD 2020
- 26-30p.
The scarcity of traditional Supplementary Cementitious Materials in the region Latin America is compromising the strategy for sustainability in the sector. The large availability of kaolinitic clays and limestone in the region paves the way for the introduction of a new cementitious system named after “LC3”, which uses the synergy established between calcined clays and limestone during cement hydration. The Technology Research Center, TRC Cuba has been very active in the development and introduction of the technology throughout the region, and several industrial trials have been carried out. Experience on clay characterization has been increased through the study of more than 100 clay deposits. Applications at the level of concrete prove that despite its low clinker content, concrete made with LC3 cement achieve similar strength to concrete made with type I Portland cement at all ages, and the increase in water demand due to the presence of calcined clays does not have a high overall impact. Assessment of durability on a natural, high chloride concentration site has proven the benefits of using calcined clays and limestone systems in concrete, with a much better performance than Portland cement concrete.