Pre-hydration as a technique for the retardation of Roman cement mortars

doi:10.1016/j.cemconres.2013.01.004

Pre-hydration as a technique for the retardation of Roman cement mortars

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Pre-hydration as a technique for the retardation of Roman cement mortars

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Bibliographic description

punktacja MNiSW [2013 A]: 45

title:	Pre-hydration as a technique for the retardation of Roman cement mortars
author:	Starinieri Vincenzo, Hughes Dave, Christophe Gosselin, Wilk Dariusz , Bayer Karol
journal title:	Cement and Concrete Research
volume:	46
date of publication :	2013
pages:	1-13
ISSN:	0008-8846
eISSN:	1873-3948
DOI:	10.1016/j.cemconres.2013.01.004
notes:	Bibliogr. pod tekstem
language:	English
journal language:	English
abstract in English:	The setting of Roman cement is so rapid as tomake the use of retardation essential inmost practicalmortars. This work reports an approach to retardation of Roman cementmortars by means of a pre-hydration process in which pre-determined amounts of water (de-activation water) are added to the cement prior to subsequentmortar formation. It is shown that this process yields bothmonocarboaluminate and a carbonated AFm phase, the balance of which is modified by storage time; the belite phases are not affected. Increases in both de-activation water and pre-hydratedmix storage time yield a longer workable life and slightly lower strength of the mortar. An increase in de-activation water also yields an increase in shrinkagewhilst an increase in storage time results ina reduction in shrinkage. Other parameters such asmixing protocol and re-mixing affect workable life without compromising the strength.
keywords in English:	Retardation, Microstructure, Compressive strength, Shrinkage, Mortar
number of pulisher's sheets:	1
departmental parameterization:	45
affiliation:	Wydział Prawa i Administracji : Katedra Kryminalistyki
type:	journal article
subtype:	academic paper

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