Impact of C3A on the early strength of cement


Provider: GA ČR
Solution time: 2023-2025
Project No: 23-06157S

Cement production is one of the largest sources of CO2 emissions. One way to decrease these emissions is to reduce Portland cement’s consumption through the wider use of blended cements from local sources of pozzolanic active components. Although this is a technologically simple solution to this urgent problem, most blended cements have low initial strength, which is, in practice, not competitive with traditional composites with higher clinker content. In order to improve their strength, it is necessary to understand the chemical processes taking place in the early stages of hydration. While most studies focus on the main clinker mineral C3S, there is only a limited amount of information about C3A, the most reactive clinker component. The main goal of this project is to understand the influence of C3A on the initial strength of cement and the early hydration of cement from a micro-and macroscopic point of view. The achieved results could help with the design and optimization of the initial properties of blended cements, which are expected to be more widely used in the near future.

Principal investigator

Lenka Scheinherrová

2 2435 7139

Office: A337