Composition and Properties of Non-Fired Fly Ash Gravel and Concrete on Its Basis

4th International Conference on Safety Problems of Civil Engineering Critical Infrastructures

土木建筑工程

Kapustin, F.L.^1 ; Kokorina, D.V.^1 ; Fomina, I.V.^1

Department of Materials Sciences in Construction of the Institute of New Materials and Technologies, Ural Federal University, 19 Mira street, Yekaterinburg

620002, Russia^1

关键词: Cement concrete;    Moist curing;    Physical and mechanical properties;    Strength class;    Strength of concrete;    Superplasticizers;    Thermal power plants;    Water demand;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/481/1/012050/pdf
DOI  :  10.1088/1757-899X/481/1/012050

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Non-fired fly ash gravel was obtained on the basis of fly ash of thermal power plant no 5 of JSC "SIBEKO", 15 % of Portland cement and the hardening accelerator. The gravel of 5-20 mm fraction and 6 months' air-moist curing is 900 density grade, P300 strength grade, frost-resistance grade - F35. The compositions of cement concretes of strength class from B10 to B25 were established and their physical and mechanical properties were determined using obtained non-fired fly ash gravel. They belong to the lightweight concrete according to the density (1817-1857 kg/m3). The introduction of superplasticizer SP-1 reduces water demand of concrete mixture and increases strength of concrete on fly ash gravel.