The Influence of Filler Type and Surface Area on the Hydration Rates of Calcium Aluminate Cement
Abstract
The addition of finely pulverized materials such as limestone and quartz has been observed to increase the reaction rates of ordinary portland cement. This study describes the effects of mineral fillers including: limestone, dolomite and quartz on the hydration rates of calcium aluminate cements. By detailed analysis of isothermal calorimetry data and application of a phase boundary nucleation and growth model, it is shown that finely ground minerals enhance reaction rates in relation to: (1) their surface area, which increases with increasing proportion of CAC replacement by a fine mineral filler, and (2) the increase in the amount of water available for CAC hydration, i.e., dilution, that occurs as the CAC is replaced by a filler. Unlike in the case of OPC, CAC hydration rates, and enhancements therein in the presence of fillers are independent of the mineral type and are only a function of available surface area.
Recommended Citation
G. Puerta-Falla et al., "The Influence of Filler Type and Surface Area on the Hydration Rates of Calcium Aluminate Cement," Construction and Building Materials, vol. 96, pp. 657 - 665, Elsevier Ltd, Aug 2015.
The definitive version is available at https://doi.org/10.1016/j.conbuildmat.2015.08.094
Department(s)
Materials Science and Engineering
Keywords and Phrases
Calcium aluminate cement; Calorimetry; Dolomite; Limestone; Quartz
International Standard Serial Number (ISSN)
0950-0618
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2015 Elsevier Ltd, All rights reserved.
Publication Date
01 Aug 2015
Comments
The authors acknowledge full financial support for this research provisioned by the University of California, Los Angeles (UCLA) and the National Science Foundation (CMMI: 1066583).