Magnesium Refractory Concretes Based on Alkaline Binders with Enhanced Thermomechanical Properties
Journal Title: Современное промышленное и гражданское строительство - Year 2018, Vol 14, Issue 4
Abstract
Alkaline binders of periclase and spinel compounds based on aqueous solutions of sodium silicates have been developed. Refractory mineral materials have been proposed as fillers and structure-forming components; the physic mechanical properties of the magnesium binder stone during heating have been investigated. It has been established that hardening of binders on the basis of periclase, closed with liquid glass, occurs as a result of the formation of Mg(OH)2 and a gel-like sodium-magnesium hydrosilicate, which ensures the hydrability of the binder stone. At average temperatures of 600…900 °С, the structure of amorphized hardening products of binders is ordered, and fillers are involved in the process of pericrisalization, which previously remained inert. The properties of refractory concretes on periclase aggregates on a spinel bundle with the use of dredged technical alumina as a high-alumina additive are investigated. It was established that concretes on a periclase bond are characterized by a low thermal resistance, which can be increased by 1.5–2,0 times with the use of a spinel bundle.
Authors and Affiliations
Ekaterina Boroday
Keywords
Related Articles
- EP ID EP536324
- DOI -
- Views 118
- Downloads 0
Technical-Economic Substantiation of the Facade Heated Insulation System of II-04 Series
The article examines the feasibility of facade insulation of buildings built during the period of industrial construction from the technical and economic point of view. The outer enclosing structures, buildings of the II...
Fillers for Concrete ff Steel-Smelting Slags
Physic and mechanical properties, chemical and the mineralogical structures of dusty sandy and crushed stone fractions of steel-smelting slags of the «Donetskstal» plant for the purpose of their application for heavy con...
Optimization of the Combined Aggregate Fine Concrete Methods BN-Calculation
We propose a method of processing and analysis of experimental and statistical information. Geometric and computer models which describe the influence of the quantitative composition of the aggregates on the physical and...
The Technology of Geodetic Monitoring of Buildings under Construction and Structures
The determination of the X, Y, H coordinates of the deformation marks should be carried out from the observation stations fixed on the terrain. However, the stability of such stations can not always be ensured due to the...
Formation of Architectural and Space Environments Complexes of Buildings of Medical Institutions under the Conditions of Reconstruction
This scientific article is devoted to the questions of formation of the architectural and spatial environment of the complexes of buildings of medical institutions that are undergoing reconstruction. The problems of non-...