Abstract
The present study evaluated the combined effects of organic-mineral additive based on a superplasticizer SR 5000F and the active mineral additive fly ash, blast furnace slag and silica fume SF-90 on properties of foam concrete. The calculation of mixture proportions of foam concrete is applied by the absolute volume method. Besides, the compressive strength and flexural strength of foam concrete are determined by Russian standard GOST 10180-2012. The porosity of the foamed concrete is determined by American standards ASTM C457-1998. The results from experiments show that flexural and compressive strength of the foam concrete obtained respectively, from 0.526 to 1.061 MPa and from 1.69 to 8.22 MPa. The relationship between compressive strength and curing age, compressive and flexural strengths of the FC were also determined in this investigation. The results of this study demonstrated that the use of fly ash and blast furnace slag to replace natural sand could produce foam concrete and environmental protection.
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