Recent development in magnesium oxychloride cement

Abstract

This paper presents a review for the key literatures on magnesium oxychloride cement (MOC) to establish a comprehensive and insightful understanding of MOC. The main aim of this review is to identify the most common problems in the development and application of the MOC and the various methods to solve these problems. The characteristics of MOC including composition of hydration phases, strength development, and durability are reviewed. In particular, the various factors influencing the water resistance of MOC, the most critical characteristics of MOC, such as the reactivity of magnesium oxide, additives, and curing conditions are reviewed. Finally, the methods to improve water resistance and its related issues of MOC from the literature are summarized and future research is proposed.

Time‐dependent model and life prediction for reinforcement corrosion in magnesium oxychloride cement concrete

“…7 MOC had obvious advantages with respect to strength, wear resistance, high and low temperature resistance, salt-brine resistance, and so on. [8][9][10][11][12][13] Further, MOC is a nonhydraulic cementitious materials prepared by mixing magnesium chloride and magnesia in certain proportions. 7,14 The research on MOC focused primarily on the ternary system (MgO-MgCl 2 -H 2 O), the phase transition process of the ternary system and application of MOC, among others.…”

“…A sketch of the electrochemical corrosion process in concrete is shown in Figure 2. 24 The research on MOC products has focused primarily on the properties of the paste and the mortar, [8][9][10][11][12][13][14][15][16] while relatively less research has been conducted on the properties of MOCC was, and has focused mainly on the effects of the MgCl 2 concentration, fly ash, molar ratio of MgO, and MgCl 2 , and so on, on the strength and water resistance of MOCC. 25,26 However, in recent years, some experts have begun to study rebar corrosion in MOCC.…”

“…Magnesium oxychloride cement (magnesium cement or Sorel cement, MOC), invented first by Sorel in 1867, is a special kind of cement 7 . MOC had obvious advantages with respect to strength, wear resistance, high and low temperature resistance, salt‐brine resistance, and so on 8–13 . Further, MOC is a nonhydraulic cementitious materials prepared by mixing magnesium chloride and magnesia in certain proportions 7,14 .…”

Experiment and time‐varying characteristics of steel corrosion in magnesium oxychloride cement

“…1 It has obvious advantages with respect to strength, wear resistance, high and low temperature resistance, saltbrine resistance, etc. [2][3][4][5][6][7][8] Furthermore, MOC is a green and nonhydraulic cementitious materials prepared by mixing magnesium chloride derived from an industrial by-product, and magnesia in certain proportions. 1,9 MOC is widely used in the production of fireproof materials, decorative materials, handicrafts, and so on.…”

“…Magnesium oxychloride cement (magnesium cement or Sorel cement, MOC) is invented by Sorel in 1867 1 . It has obvious advantages with respect to strength, wear resistance, high and low temperature resistance, salt‐brine resistance, etc 2–8 . Furthermore, MOC is a green and nonhydraulic cementitious materials prepared by mixing magnesium chloride derived from an industrial by‐product, and magnesia in certain proportions 1,9 .…”