A peak in the hydration reaction at the end of the cement induction period

Autor:	G. W. Chan, K. Y. Esseghaier, J.M. Makar
Rok vydání:	2007
Předmět:	Cement Materials science Scanning electron microscope Mechanical Engineering Induction period Mineralogy Mechanism analysis Calorimetry law.invention Portland cement Chemical engineering Mechanics of Materials law Solid mechanics Hydration reaction Béton General Materials Science Concrete
Zdroj:	Journal of Materials Science. 42:1388-1392
ISSN:	1573-4803 0022-2461
DOI:	10.1007/s10853-006-1427-3
Popis:	Although the hydration of ordinary Portland cement (OPC) and its main constitutent, tricalcium silicate (3CaO.SiO2 or C3S), have been studied for many decades, some aspects of the hydration process remain poorly understood. In particular, there is little consensus on the mechanisms related to the dormant or induction period. The induction period is a time of minimal hydration activity between the initial hydration reactions upon wetting and the later priamry tricalcium silicate reaction with water to form calcium silicate hydrate and calcium hydroxide. This letter examines the mechanisms responsible for a peak in hydration activity at the end of the induction period. Although occasionally seen in the literature, this peak appears absent in most reported measurements and has therefore remained unexplained.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e87721cfb76d7a0914cb0d1229a8d286 https://doi.org/10.1007/s10853-006-1427-3 Zobrazit plný text záznamu Plný text ve formátu PDF