Effect of multicomponent mineral additives on the microstructure and  strength of composite cement

F.B. Atabaev; M.Kh. Aripova; A.Sh. Khadzhiev; G.R. Tursunova; Z.R. Tursunov

doi:10.31643/2027/6445.05

Authors

F.B. Atabaev Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan
M.Kh. Aripova Tashkent Institute of Chemical Technology
A.Sh. Khadzhiev Urgench State University named after Abu Rayhon Beruni
G.R. Tursunova Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan
Z.R. Tursunov Navoi State University of Mining and Technology

DOI:

https://doi.org/10.31643/2027/6445.05

Keywords:

Thermally activated additives, clinker reduction, sustainable construction materials, cement hydration, hybrid mineral additives, composite Portland cement.

Abstract

In the face of growing environmental and energy challenges, the cement industry is shifting towards the use of composite Portland cements containing hybrid mineral additives to reduce clinker consumption and CO₂ emissions. This study investigates the pozzolanic activity and hydration behavior of thermally activated aluminosilicate additives (TAFM), quartz-feldspar sand, apobasalt-orthoshale (APO), and limestone. The chemical composition and calcium oxide binding capacity of each component were examined using the lime saturation method. Results showed that TAFM exhibits the highest pozzolanic reactivity, significantly binding free lime (CaO), followed by APO and limestone. Composite cement mixtures were formulated according to GOST 31108–2020 standards, incorporating 20% hybrid additives. Mechanical tests revealed that such compositions improve long-term compressive and flexural strength, early setting times, and structural density. In particular, the combination of TAFM, APO, and limestone showed synergistic effects in enhancing hydration kinetics and final performance. The findings support the feasibility of using local mineral resources as effective components in sustainable cement production and highlight the benefits of hybrid additives in reducing clinker demand while improving mechanical and durability characteristics of cementitious composites.

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Author Biographies

F.B. Atabaev, Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan

Doctor of Technical Sciences, Professor, Chief Scientific Researcher at the STROM Research Laboratory and Testing Center of the Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan, 77 Mirzo Ulugbek Street, 100170, Tashkent. ORCID ID: https://orcid.org/0009-0004-4941-5060

M.Kh. Aripova, Tashkent Institute of Chemical Technology

Doctor of Technical Sciences, Professor, Head of the Department of Technology of Silicate Materials and Rare Noble Metals, Tashkent Institute of Chemical Technology, 32 A. Navoi Street, Tashkent 100011, Republic of Uzbekistan. ORCID ID: https://orcid.org/0000-0003-1365-7864

A.Sh. Khadzhiev, Urgench State University named after Abu Rayhon Beruni

Doctor of Philosophy in Technical Sciences, Associate Professor at the Faculty of Chemical Technology, Urgench State University named after Abu Rayhon Beruni, Urgench, H. Olimjon Street 14, 220100, Uzbekistan. ORCID ID: https://orcid.org/0000-0003-2131-8256

G.R. Tursunova, Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan

DSC Student, Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, 77 Mirzo Ulugbek Street, Tashkent 100170, Uzbekistan. ORCID ID: https://orcid.org/0000-0002-5962-0322

Z.R. Tursunov, Navoi State University of Mining and Technology

Doctor of Philosophy in Technical Sciences, Associate Professor, Navoi State University of Mining and Technology, 76v Galaba Avenue, Navoiy City, Navoiy Region, 210100, Republic of Uzbekistan. ORCID ID: https://orcid.org/0009-0003-6432-4442

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