Prospects for application of magnesium binder in construction

International Conference on Construction, Architecture and Technosphere Safety 2018

土木建筑工程

Kiyanets, A.V.^1

Department of Building Construction and Structural Theory, South Ural State University, Lenin Avenue, 76, Chelyabinsk

454080, Russia^1

关键词: Low thermal conductivity;    Magnesium oxychloride;    Magnesium oxychloride cement;    Monolithic structures;    Optimal composition;    Scientific researches;    Structure formations;    Temperature and humidities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/451/1/012074/pdf
DOI  :  10.1088/1757-899X/451/1/012074

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

It is possible to replace portland cement in various areas of construction by magnesium binder (magnesium oxychloride cement), which is a unique material in its properties. The materials, based on magnesium binder, do not require heat and moisture (autoclave) treatment for hardening, provide high fire resistance and low thermal conductivity, wear resistance, compressive strength and bending strength. The article summarizes the current knowledge of the processes of structure formation and hardening of the magnesium binder. When the caustic magnesite is closed with an aqueous solution of magnesium chloride, a complex process occurs in the formation of various phases of magnesium oxychloride and, in part, magnesium hydroxide. The optimal combination of different concentrations of the initial components provides high strength and performance characteristics of building composites based on the magnesium binder. The violation of the optimal composition leads to the processes of destruction and warpage of the material. It is concluded that the most promising areas of scientific research in the field of magnesium binders are the technologies for the construction of monolithic structures directly on the construction site, as well as controlling the properties of materials, depending on the temperature and humidity conditions of the medium.