The Negative Temperature Impact on Hardening of Magnesia Composites

Abstract:

Modern economy has a strong demand for higher speed of construction and lower construction costs both achieved by using new efficient materials. Significant climate influence on the construction technology urges to make extensive investigations on hardening the construction composite (concrete and mortar) mixtures under freezing temperatures at the actual construction site. The article focuses on the use of advanced composite materials using magnesium oxychloride cement and mineral aggregates. The results of literature review on the problem are also presented. We have found that the problem of magnesia composites hardening under freezing temperatures hasn’t been thoroughly investigated. The results of laboratory study of the effect of initial magnesia concretes maturing and mortars under the conditions of freezing temperatures on the hardening process and the final strength of the material are presented. The scientific explanation of the speed of magnesium oxychloride cement strength development in concretes and mortars which have initially undergone the influence of freezing temperatures is given.

• Periodical: Materials Science Forum (Volume 843)
• Pages: 91-95
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.843.91
• Online since: February 2016
• Authors: A.V. Kiyanets*
• Keywords: Composite Construction Materials, Hardening Temperature, Magnesium Oxychloride Cement, Sorel Cement

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