The supplementary cementitious materials (SCM) can be used as a replacement of cement in the construction industry to minimize the drawbacks of normal concrete such as the emission of carbon dioxide so as to be eco-friendly. This paper presents the effect of ultra-fine slag (i.e. 25% of alccofine) as a replacement of cement for different water to binder ratios (i.e. 0.38, 0.4 and 0.45). The effect of alccofine on the concrete strength properties were studied at 7 and 28 days wherein considerable strength enhancement was observed compared to normal concrete. Thermogravimetric analysis was also carried out in which mass loss and decomposition of hydration products from concrete was determined. X-ray diffraction showed the crystalline forms of ettringite and calcium silicate hydrate. Therefore, it was concluded from this study that alccofine can be used as a viable substitute to cement in normal concrete considering its positive effects on property enhancement and eco-friendless.
Reddy, Panga Narasimha and Naqash, Javed Ahmed
"Properties of Concrete Modified with Ultra-Fine Slag,"
Karbala International Journal of Modern Science: Vol. 5
, Article 4.
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