Investigation of Alkaline Heat-Resistant Concrete Based on Ash and Slag Waste of the Zuevskaya TPP
А. N. Lischenko
FSBEI HE «Donbas National Academy of Civil Engineering and Architecture»
Annotation: The paper presents the results of a comparative study of the dependence of the compressive strength of alkaline heat-resistant concretes on the type of ash and slag waste from the Zuevskaya TPP, the concentration of the alkali solution and the duration of hardening under normal conditions, during steaming and autoclaving. It has been established that during hardening under normal conditions, the strength of concrete is insignificant and amounts to 2.8–10.5 MPa. With heat and moisture treatment, especially autoclave, it increases significantly. The brand of concrete based on the slag of the Zuevskaya TPP is 1.5–2 times higher than the brand of similar compositions based on fly ash. Based on the developed slag-alkali binders, steamed and autoclaved slag-alkali concretes of grades 100–200 and 300–400, respectively, were obtained. The change in the physical and mechanical properties of alkaline concretes based on slag at ordinary temperature, after drying and firing at a temperature of 1 000° С was studied. It has been established that alkaline heat-resistant concretes based on ground coal slag from the Zuevskaya TPP have increased heat-resistant properties. Thus, the possibility and expediency of using ground coal slag in the manufacture of alkaline heat-resistant concretes has been proved.
Keywords: slag-alkali binder, heat-resistant concrete, linear shrinkage, strength, slag TPP, steaming.
Pages: 61-70.
Link for citation: Lischenko, А. N. Investigation of Alkaline Heat-Resistant Concrete Based on Ash and Slag Waste of the Zuevskaya TPP. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2023. – Vol. 19, N 2. – Р. 61-70. – URL: https://donnasa.ru/publish_house/journals/spgs/2023-2/st_03_lischenko.pdf (date of access: 16.09.2024). (in Russian)
Vol. 19, N 2 (2023)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture