Lightweight structural thermal insulation concrete using TPP ash
Zhuginissov M.T. Kuldeyev E.I. Nurlybayev R.E. Orynbekov Y.S. Khamza Y.Y. Iskakov A.А.
2026Institute of Metallurgy and Ore Beneficiation JSC
Kompleksnoe Ispolzovanie Mineralnogo Syra
2026#336Issue 174 - 85 pp.
The article presents the results of developing lightweight structural concretes based on ash-slag waste from the Almaty Thermal Power Plant-2. The ash-slag aggregates were produced using both firing and non-firing (clinker) technologies. The fired aggregates, obtained with the use of bentonite clay, exhibited a bulk density of 530–640 kg/m³ and a strength of 1.8–4.8 MPa. The non-fired aggregates based on Portland cement had a density of 644–690 kg/m³ and a strength of 1.79–2.98 MPa, while those based on liquid glass showed a density of 562–642 kg/m³ and a strength of 1.93–3.8 MPa. Using the obtained aggregates, lightweight concretes with a density of 1210–1750 kg/m³ and a strength of 100–152 kg/cm² were produced, meeting the requirements of GOST 25820-2014. In the compositions without coarse aggregate, the influence of additives such as CaCl₂, superplasticizers, and basalt fibers on the properties of ash concrete was studied. The strength of the concrete after 28 days exceeded the 7-day strength by 1.5–2.3 times, with the most significant effect observed from CaCl₂. Ash concrete of classes B10–B12 with a density of 1500–1600 kg/m³ was obtained, which according to GOST can be classified as structural-thermal insulating concrete. The objective of the research is to develop compositions of lightweight structural concrete based on ash-slag waste. The novelty of the work: for the first time, ash-slag aggregates based on the ash-slag from Almaty Thermal Power Plant-2 have been obtained using both firing and non-firing technologies.
aggregate , ash and slag , ash concrete , benton clay , density , firing , hardening , strength
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Satbayev University, Satpayev str., 22, Almaty, 050013, Kazakhstan
LLP «International Educational Corporation», Ryskulbekov str., 28, Almaty, 50043, Kazakhstan
LLP “SAVENERGY”, Akkent Microdistrict, 4, Almaty, 050038, Kazakhstan
Satbayev University
LLP «International Educational Corporation»
LLP “SAVENERGY”
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026