Open AccessMODIFICATION OF LOW-REACTIVE ALUMINOSILICATES AS A METHOD FOR IMPROVEMENT OF ITS QUALITY WHEN GEOPOLYMER SYNTHESIS
Author(s) -
N. I. Kozhukhova,
N. I. Kozhukhova,
Dmitriy Danakin,
Dmitriy Danakin,
В. В. Строкова,
В. В. Строкова,
Игорь Жерновский,
Igor' Zhernovskiy,
Марина Кожухова,
M. Kozhuhova,
Nataliya Alfimova,
Nataliya Alfimova
Publication year - 2019
Publication title -
vestnik bgtu im. v.g. šuhova
Language(s) - English
Resource type - Journals
ISSN - 2071-7318
DOI - 10.34031/article_5cd6df45c835e4.80839646
Subject(s) - geopolymer , metakaolin , compressive strength , materials science , aluminosilicate , fly ash , absorption of water , portland cement , composite material , cement , chemistry , organic chemistry , catalysis
Synthesis of binders and materials characterized by polycomponent composition, generally, is associated with necessity of improvement of certain properties or formation of principally new characteristics in this materials. In this paper hybrid geopolymers based on fly ash were synthesized using different types of mineral modifiers such as Portland cement (PC), kaolin, metakaolin (MK). It was defined, that values of compressive strength, water resistance and water absorption for PC-containing geopolymers are better than free of modifier geopolymer as well as for kaolin- and MK-containing geopolymers. It was determined that high-temperature treatment (at 600 °C) provides with reinforcing and improvement of water resistance of kaolin- and MK-containing hybrid geopolymers. PC-containing hybrid geopolymers demonstrated a sharp reducing in compressive strength and average density. For this system, in temperature range of 400–600 °C a dramatic growth of compressive strength is observed when average density grows or a constant. Thus, PC-containing hybrid geopolymers are not thermal resistant, that confirmed by degradation of its performance characteristics under high temperature effect.