Modifying composition of plastering mortar for the purpose of enhancing fire resistance of building structures by means of silicate additives

Nikita Levashov,Yulia Sokolova,Marina Akulova,A Volkov,A Pustovgar,T Sultanov,A Adamtsevich

doi:10.1051/e3sconf/20199703014

Abstract

The present paper deals with modifying composition of plastering mortar for the purpose of enhancing fire resistance of building structures by means of silicate additives. Interaction of soluble water glass with cement binder elongates the initiation of setting time and reduces the time of final setting that could be explained by the opposed action of each component. One of the components facilitates the increase in the mobility of the mortar while the other, as opposed, is fastening rapidly. The optimum choice of the mixing ratio in the mortar would enhance both physical-mechanical and thermal properties.

Highlights

Binders on the base of soluble water glass are proved to be very efficient for high-temperature-resisting concretes and mortars [1]
It’s worth mentioning that soluble water glass has high adhesive properties relative to all the materials applied in refractory industry; its adhesive capacity is 3...5 times as high as of cements
The mineral wool articles could be used at extremely high temperatures provided that they are not exposed to mechanical loads causing their displacement after destruction of the present binding component [17, 18, 19, 20]

Summary

Introduction

Binders on the base of soluble water glass are proved to be very efficient for high-temperature-resisting concretes and mortars [1]. The active structuring and control of operating abilities of these materials by means of change of various technological parameters such as the content of soluble water glass in the mortar mix, type and quantity of inhibiting additives and floured reinforcing fillers, particle-size analysis, type and the nature of coarse aggregate, the modes and methods of mortar mix compaction, etc., enabled to develop the reliable technology for producing high-temperature-resisting concretes and mortars ensuring the manufacture of materials with given properties [2, 3, 7, 8, 9]. While heating such materials, dehydration is observed but it takes place at significantly low level than for the materials based on phosphate compounding [11, 12, 13]

Methods

Results

Conclusion