Paper Title:

Leaching and Detecting Free Magnesium Chloride for Magnesium Oxychloride Cement

Periodical Advanced Materials Research (Volumes 328 - 330)
Main Theme Mechatronics and Materials Processing I
Edited by Liangchi Zhang, Chunliang Zhang and Zichen Chen
Pages 1347-1350
DOI 10.4028/www.scientific.net/AMR.328-330.1347
Citation Ying Li et al., 2011, Advanced Materials Research, 328-330, 1347
Online since September, 2011
Authors Ying Li, Hong Fa Yu
Keywords Determination, Ethyl Alcohol, Free Magnesium Chloride, Leach, Magnesium Oxychloride Cement (MOC)
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Abstract

The content of free MgCl2 is one of the key indicators of deliquescence, dehalogenation and efflorescence for Magnesium Oxychloride Cement (MOC). A range of possible techniques for assessing the free MgCl2 content of MOC have been investigated. The techniques are based on mixing powdered samples with absolute ethyl alcohol and measuring the amount of MgCl2 passing into solution. The influence of temperature of solvent, extraction time, fineness, agitation and liquid to solid ratio (L/S) are discussed. The results of recovery tests ranged 96.37% or above. The method is successfully applied to leaching and detecting free MgCl2 in commercial magnesium oxychloride cement fireproof board.