Development and research of the influence of the composition and concentration of activators on the strength of phosphorus slag binders

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.242814

Keywords:

phosphorus slag, cement, sodium hydroxide, phosphorus slag binders, construction materials

Abstract

The paper discusses various ways of activating phosphorus slags by introducing additives for the development of phosphorus slag binders (PSB), replacing cement. Considering that pseudowollastonite is the main mineral of phosphorus slags and without activating components does not possess the binding properties necessary for the production of building materials based on them, we used compositions of small amounts of sodium hydroxide with alkali metal salts, the anions of which form poorly soluble compounds with calcium. When choosing activating components, scarce alkaline additives were replaced by waste from chemical plants, which allows a passing solution of their practical use and environmental problems.

The strength at a sodium hydroxide content of 1–4 % after curing of slag samples of various batches was in the range of 50.0–70.0 MPa. Samples of binders of normal hardening at the age of 28 days with a sodium hydroxide content of 0.5; 1.0, 2 and 4 % had the strength of 20.3; 35.4; 45.6; 55.8 MPa, respectively. The effect of the combined presence of alkali and salt is especially noticeable for small amounts of sodium hydroxide. Binders containing a composition of cement with salts under normal conditions and after curing showed a slightly lower strength than in an alkaline medium. With a constant cement content (4 %), the strength indicators increase with an increase in the proportion of the salt additive, reaching at 4 % its maximum value. The effect of the nature of activators on pH was determined. The data obtained indicate the advantages of using PSB and various industrial wastes with a low content of alkaline compounds in the production

Author Biographies

Ultuar Mahambetova, Baishev University

Doctor of Technical Sciences, Professor

Department of "Design and Construction"

Zatkali Estemesov, Central Laboratory of Certification Tests Building Materials" LLP – "Tselsim"

Doctor of Technical Sciences, Professor, Director

Bulbul Nuranbayeva, Caspian University

Professor, Program Leader Petroleum Engineering

Department of Petroleum Engineering

Pernekhan Sadykov, Aktobe University S. Baisheva

Doctor of Technical Sciences, Professor

Department of Design and Construction

Orken Mamyrbayev, Institute of Information and Computational Technologies

PhD, Deputy General Director in Science

Laboratory of Computer Engineering of Intelligent Systems

Dina Oralbekova, Satbayev University

Researcher

Department of Cybersecurity, Information Processing and Storage

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Published

2021-10-29

How to Cite

Mahambetova, U., Estemesov, Z., Nuranbayeva, B., Sadykov, P., Mamyrbayev, O., & Oralbekova, D. (2021). Development and research of the influence of the composition and concentration of activators on the strength of phosphorus slag binders. Eastern-European Journal of Enterprise Technologies, 5(6 (113), 54–61. https://doi.org/10.15587/1729-4061.2021.242814

Issue

Vol. 5 No. 6 (113) (2021): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2021 Ultuar Mahambetova, Zatkali Estemesov, Bulbul Nuranbayeva, Pernekhan Sadykov, Orken Mamyrbayev, Dina Oralbekova

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