The use of nanosized additives in the modification of brick loam

Andrey Bogdanov,Evgeniya Nurieva,Azat Mavlyuberdinov,E Vdovin

doi:10.1051/e3sconf/202127404005

Abstract

The effect of nanosized additives on the strength properties of ceramics based on fusible brick loam of the Klyuchischenskoye deposit has been studied. In general, all nanosized additives selected for the study had a positive effect on the strength properties of ceramics. The greatest increase in strength, when using nanosized silica ash Laksil 30, was 70 %, in relation to the control sample. When using silica ash, an increase in the content of the amorphous phase in the shard after firing is noted against the background of a decrease in its porosity, which causes an increase in strength characteristics. The nature of the destruction of the samples also differed. The destruction of the control sample was accompanied by the formation and gradual opening of cracks. The destruction of the modified samples was more fragile in comparison with the control. Thus, the effectiveness of nanosized additives on the strength properties of ceramics is shown.

Highlights

To date, the construction standards have been completely revised, new stringent standards have been introduced for the resistance to heat transfer of enclosing structures even in countries with a warm climate [1-3]
Following nanosized additives were selected for testing, the production of which was established by Russian manufacturers: 1 alumina sol; 2 silicones: Laksil 30 и Laksil 30-Al; 3 1 % aqueous colloidal dispersions of carbon nanotubes (CNTs) Taunit-M in a 1 %
It can be seen that all nanosized additives made it possible to increase the strength characteristics of the ceramic shard

Summary

Introduction

The construction standards have been completely revised, new stringent standards have been introduced for the resistance to heat transfer of enclosing structures even in countries with a warm climate [1-3]. Construction is no longer possible without the use of effective insulation [4-9], which, in addition to reducing heat loss through the enclosing structures, can reduce the load on the foundations of buildings. Highly sensitive to drying, are widespread, but the production of wall products from them is accompanied by a number of difficulties This is a low grade of manufactured products and an unsatisfactory appearance, along with the difficulties of drying raw materials from such raw materials, which takes quite a long time. To correct the performance properties of ceramics based on such raw materials, «traditionally» plastic «fat» clays are used. This leads to the multicomponent composition of the charge, the need for its averaging and homogeneity. This article is devoted to solving the problems of increasing the operational characteristics of a ceramic shard by nano-sized additives, incl. to increase the degree of filling of clay raw materials with porous additives

Materials and methods

Results

Conclusion