Investigation of magnesian foam concrete properties

[摘要] This paper presents a method for producing magnesium foam concrete of structural and heat-insulating purpose. It was assumed that the magnesium oxychloride cement will ensure the non-shrinkage and high-quality structure of the developed foam concrete due to the introduction of crystallization centers into it. Such kind of cement is based on dolomite wastes and obtained via firing at a temperature of 650 °C. It has the ability to rapidly gain high strength under natural conditions that will eliminate the use of autoclave treatment. The possibility of obtaining foam concrete of non-autoclaved hardening on a magnesium oxychloride cement with the use of modern types of foaming agents is considered. The main technological features of the preparation of disperse systems, based on saponified resins, synthetic and organic foaming agents, as well as determination of their stability and physical properties are described. The effect of a crystal seed in the form of magnesium oxide of the grade of PFA of various concentrations on the properties of the foam and the strength characteristics of the resulting foam concrete are described.

[发布机构] Department of Building Materials and Products, South Ural State University, Lenin Avenue, 76, Chelyabinsk; 454080, Russia^1

[学科分类] 土木及结构工程学

[关键词] Autoclave treatments;Disperse systems;Foam concretes;Magnesium oxychloride cement;Natural conditions;Organic foaming agents;Strength characteristics;Technological feature