STUDY OF CHEMICAL-MINERALOGICAL COMPOSITION OF LIMESTONE-SHELL FROM THE ZHETIBAI FIELD

Bukayev Y. Nurbayeva F. Bukayeva A.
2025 National Academy of Sciences of the Republic of Kazakhstan

News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2025 #2025 Issue 3 27 - 38 pp.

Construction is a vital sector where the use of concrete materials is steadily increasing. In Kazakhstan, these technologies are employed by more than 100 enterprises. However, due to intensive mineral extraction, more than 20 billion tons of waste have accumulated, including overburden rocks and slags, which contribute to the pollution of water, air, and soil. Global experience shows that an effective solution is the recycling of such waste into construction materials. This approach reduces environmental impact, conserves natural resources, and decreases energy consumption. Results. This study presents a method for evaluating the quality of limestone-shell rock from the Zhetybai deposit. Derivatographic analysis (DTA) was conducted using the “Derivatograph Q-1500D” device (MOM), which integrates DTA, TG, and DTG methods. It was determined that heat release is associated with the oxidation of magnesium carbonate (MgCO₃) and calcium carbonate (CaCO₃). Experimental data allowed the determination of optimal concrete compositions (35 seconds setting time), including the addition of sulfite-alcohol bard (SAB) and polyacrylamide (PAA) at 0.2% of the cement weight. These additives improved compressive strength by 24–33% in conventional concretes and by 1.5–11% in lightweight concretes. Scientific novelty. A new polymer-cement composition has been developed based on limestone-shell rock sawing waste. The composition includes a 0.15% polyacrylamide solution combined with white cement (7–8%), filler (68–73%), white spirit (0.5–1.0%), and a hardening accelerator (0.7–1.2%). Practical Value. The proposed composition offers an efficient method for recycling mining waste into environmentally safe and durable construction materials.

derivatographic analysis , limestone-shell rock , polymer-cement composition , sample preparation , thermogram , thermogravimetry

Text of the article Перейти на текст статьи

Institute for Sustainable Development of Arid Territories, Caspian University of Technology and Engineering named after Sh. Yessenov, Aktau, Kazakhstan
Department of Ecology and Geology, Caspian University of Technology and Engineering named after Sh. Yessenov, Aktau, Kazakhstan
Department of Mechanical Engineering and Transport, Caspian University of Technology and Engineering named after Sh. Yessenov, Aktau, Kazakhstan

Institute for Sustainable Development of Arid Territories
Department of Ecology and Geology
Department of Mechanical Engineering and Transport

10 лет помогаем публиковать статьи Международный издатель

Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026