Alkali activated concretes mix design using red mud as an active aggregate

Authors

DOI:

https://doi.org/10.15587/2312-8372.2019.184253

Keywords:

alkaline cement, alkaline concrete, red mud, technogenic product of industry, index of active concentrations, heavy metals

Abstract

The object of the study is compositions of common alkali activated concretes using red mud as an active aggregate. The main problem when working with red mud is its chemical composition and high specific surface area, which quite negatively affect the properties of building materials.

The study used modern methods of physico-chemical analysis to obtain results. Determination of physical-mechanical and special (strength, frost, carbonation, corrosion resistance, radiation resistance, durability, own shrinkage deformation) properties of the tested concrete mixtures and alkaline concretes with high red mud content were carried out according to standard methods. The world's experience in dealing with red mud is also taken into account.

Optimal indices of the functional properties of concrete with the use of red mud have been obtained, which makes it possible to confirm the durability and environmental friendliness of such material. This is due to the fact that the reliability of the immobilization of alkaline concretes meets the requirements of the standard, which indicates that the concretes developed are environmentally friendly.

Radiation resistance of alkaline concretes based on red mud is conducted and it is determined that this concrete with a mud content of up to 40 % (by weight of concrete) belongs to Class I according to the classification of building materials and can be used for all types of construction without restrictions.

This provides an opportunity to expand the nomenclature of building materials and obtain a completely new product made on the basis of man-made raw materials, which significantly reduces the price and increases the demand for products. Especially in comparison with other similar products made on natural raw materials.

Author Biographies

Olha Boiko, Kyiv National University of Construction and Architecture, 31, Povitroflotskyi ave., Kyiv, Ukraine, 03037

Postgraduate Student

Scientific-Research Institute for Binders and Materials named after V. D. Glukhovsky

Viktoria Zozulynets, Kyiv National University of Construction and Architecture, 31, Povitroflotskyi ave., Kyiv, Ukraine, 03037

Postgraduate Student

Scientific-Research Institute for Binders and Materials named after V. D. Glukhovsky

Vasyl Ivanychko, Kyiv National University of Construction and Architecture, 31, Povitroflotskyi ave., Kyiv, Ukraine, 03037

Postgraduate Student

Scientific-Research Institute for Binders and Materials named after V. D. Glukhovsky

Oleksandr Kovalchuk, Kyiv National University of Construction and Architecture, 31, Povitroflotskyi ave., Kyiv, Ukraine, 03037

PhD, Senior Researcher

Scientific-Research Institute for Binders and Materials named after V. D. Glukhovsky

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Published

2019-07-25

How to Cite

Boiko, O., Zozulynets, V., Ivanychko, V., & Kovalchuk, O. (2019). Alkali activated concretes mix design using red mud as an active aggregate. Technology Audit and Production Reserves, 5(3(49), 15–21. https://doi.org/10.15587/2312-8372.2019.184253

Issue

Section

Chemical and Technological Systems: Original Research