A Study on the Hydration Characteristics of Low Temperature Calcined Calcium Silicate Cement

Hardened cement with carbonation curing typically exhibits different curing characteristics from ordinary portland cement when reacting with CO2. It also shows distinct mineralogical properties that contribute to the reaction, resulting in significant differences in the reaction products depending on the conditions. Theoretically, ordinary Portland cement reacts with water to form calcium silicate, ettringite phases associated with hydration of cement’s four major minerals: C2S, C3S, C3A, and C4AF. On the other hand, hardened cement with carbonation curing, such as CS and C3S2, undergoes a carbonation reaction with CO2, leading to the decomposition of CaCO3 and SiO2, which contributes to the densification of the curing material. In this research, we are conducting a comparison between the hydration and carbonation reactions of ordinary Portland cement mixed with locally sourced materials and hardened cement with carbonation curing produced from ordinary Portland cement. Our focus is to explore and analyze the curing properties of both types of cement.