Open AccessInternal relation between hydration kinetic and endogenous shrinkage in an ettringite-based compound
Author(s) -
Ngoc-Lam Nguyen
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/869/3/032042
Subject(s) - ettringite , shrinkage , microstructure , swelling , materials science , infrared spectroscopy , chemistry , chemical engineering , composite material , organic chemistry , cement , portland cement , engineering
Ettringite based compound is a new materials used in construction because of high early-age strength, good chemical resistance, low CO 2 emission…etc. However, research on not only the microstructure characteristics but also macrostructural properties and their internal relation is very limited. The aim of this study is to evaluate the relation between the microstructure characteristics such as chemical shrinkage and ettringite development by the infrared spectroscopy method with endogenous volumetric shrinkage in case of an ettringite based compound without setting regulators. The results indicated the evolution of the ettringite measured continuously by the infrared spectroscopy method corresponds to the development curves of the endogenous and chemical shrinkage. The swelling phenomenon expressed by volumetric shrinkage measurement related to the ettringite formation is verified by infrared spectroscopy and DRX technic. The greater the amount of ettringite formation, the more swelling of the compound increases.