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- Article name
- Recycling of waste from the fuel and energy complex, non-ferrous metallurgy and petrochemical industry in the production of non-burning heat-resistant concretes
- Authors
- ABDRAKHIMOVA E. S., , 3375892@mail.ru, Samara Academy of the State and Municipal Management, Samara, Russia
KAYRAKBAEV A. K., , kairak@mail.ru, Kazakh-Russian International University, Aktobe, Kazakhstan
- Keywords
- ash-slag material / water-pack slag / spent catalyst / phosphate binders / heat-resistant concretes
- Year
- 2020 Issue 3 Pages 5 - 12
- Code EDN
- Code DOI
- Abstract
- Currently, the level of negative impact on the environment in the first place are waste from the fuel and energy complex, the second-metallurgical production and the third-petrochemical industry. In this work, using waste from the fuel and energy complex-ash and slag material, non - ferrous metallurgy - water package slag and chemical industry-aluminum-containing nanotechnogenic raw materials based on phosphate binders, heat-resistant concrete with high physical and mechanical properties was obtained. Thanks to the use of orthophosphoric acid as a binder, 80-90 % of waste from the fuel and energy complex, non-ferrous metallurgy and petrochemical industry can be disposed of, which helps to reduce the anthropogenic load on the environment and humans. Studies have shown that heat-resistant concrete based on an iron-phosphate binder under normal conditions of hardening at a daily age acquires strength sufficient for deconstruction, transportation and installation of products. The phosphate binder obtained by sealing water-pack slag with 70 % orthophosphoric acid increases the strength approximately in direct proportion to the time of hardening in air conditions and stabilizes at the level of 65-70 MPa at 7 days of age.
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