Designing model system for low-pH cement carbonation
Abstract
We formulated model cementitious materials of controlled mineralogy and increasing chemical composition complexity. Those model materials are hardened cement pastes with Ca/Si ratio between 0.80 and 3.0 with a microstructure generated by their hydration. They are part of a study focusing on atmospheric carbonation and its consequences (modifications in mineralogy and microstructure) but this aspect will not be discussed here. We will focus instead on the hardened cement pastes properties such as mineralogical assemblage, chemistry and microstructure.
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