MODIFICATION OF LOW-REACTIVE ALUMINOSILICATES AS A METHOD FOR IMPROVEMENT OF ITS QUALITY WHEN GEOPOLYMER SYNTHESIS
| Autor: | N. Kozhuhova, Dmitriy Danakin, Igor' Zhernovskiy, Nataliya Alfimova, Marina Ivanovna Kozhuhova, V. Strokova |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
media_common.quotation_subject 0211 other engineering and technologies Pharmaceutical Science 02 engineering and technology 021001 nanoscience & nanotechnology Geopolymer Complementary and alternative medicine Chemical engineering Aluminosilicate 021105 building & construction Pharmacology (medical) Quality (business) 0210 nano-technology media_common |
| Zdroj: | Bulletin of Belgorod State Technological University named after. V. G. Shukhov. 4:131-139 |
| ISSN: | 2071-7318 |
| DOI: | 10.34031/article_5cd6df45c835e4.80839646 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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