Lafarge

TL;DR: In this paper, the authors discuss the practicality of replacing portland cements with alternative hydraulic cements that could result in lower total CO 2 emissions per unit volume of concrete of equivalent performance.

TL;DR: In this article, the authors argue that the cement and concrete industry is contributing positively to the Climate Change Initiative by: Continuously reducing the CO 2 emission from cement production by increased use of bio-fuels and alternative raw materials as well as introducing modified low-energy clinker types and cements with reduced clinker content.

TL;DR: In this article, chemical and microstructural aspects of delayed ettringite formation are reviewed, and the authors show that the rate and ultimate extent of expansion are influenced by factors of three types: chemistry, paste microstructure, which determines the stresses produced by its formation.

TL;DR: The Cemdata18 database as mentioned in this paper contains thermodynamic data for common cement hydrates such as C-S-H, AFm and AFt phases, hydrogarnet, hydrotalcite, zeolites, and M-S -H that are valid over temperatures ranging from 0 to at least 100°C.

TL;DR: In this paper, the properties of Portland cements (C3S and alite, C2S, C3A, C4AF) were measured at the microscopic scale by nanoindentation and at the macroscopic scale by the resonance frequencies technique.