СУХИЕ СТРОИТЕЛЬНЫЕ СМЕСИ НА ОСНОВЕ МОДИФИЦИРОВАННОГО ДИАТОМИТА

Abstract

Dry building mixes are an integral part of modern construction and renovation. They have unique properties and are designed to perform a variety of jobs. It is important to choose the appropriate type of mixture to ensure the durability and reliability of the structures. The article provides data on the developed compositions of dry building mixes based on modified diatomite. Research on the study and production of modified diatomite and its bases in dry building mixes have shown that heat treatment of diatomite allows to obtain raw materials with improved strength properties under compression up to 4.28 MPa at a temperature of 650°C. The introduction of low-viscosity cellulose ether and a polymer additive into formulations based on modified diatomite made it possible to increase the compressive strength to 0.9-0.92 MPa.  The results of the determination of the water retention capacity showed a value of 94.2% in the presence of low-viscosity cellulose ether and a polymer additive.  The ability to retain water was also evaluated in terms of plastic strength. Experimental data show that the water-retaining effect of additives prevents the active absorption of moisture from the mixture by the porous base and helps to maintain low values of plastic strength of compositions up to t = 0.0067 MPa.