Alkali-Activation of Metakaolin and Blast Furnace Portland Cement Blends

Abstract

O conteúdo dos livros e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

Unveiling the Carbon Footprint Reduction Potential of Cementitious Composites: CO2 Sequestration in a Lime-Clay Binder Incorporating Medium-Grade Clay

“…The sulfate-binding phase, ettringite, was observed in all of the clay mixes. The rich alumina content in calcined kaolin clay formed tetra calcium aluminate hydrates (C 4 AH 13 ) after reacting with portlandite, 67 which reacted with sulfate ions in seawater, enhancing sulfate binding through the formation of ettringites. 68−70 As shown in Figure 6b, needlelike ettringites were found filling up the voids of the binder matrix even at an early age (28 days); at 90 days, the width of these needles increased in size.…”