Pengaruh Abu Terbang dan Superplasticizer terhadap Kuat Tekan Beton

Additional material used in this study is fly ash. Fly ash is the waste from burning of coal fired power plant using coal fluel. Fly ash used was derived from Bukit Asam Tanjung Enim of coal fired power plant. Types of fly ash used are class F of fly ash which is the result of burning coal type anthracite / bituminous coal with low CaO content is less than 10%. Research was conducted to determine the effect of early pressure and the percentage of fly ash as a partial substitute for cement to the valve of concrete compressive strength as a pavement. Test object used is a cylinder with a diameter of 10 cm and high of 20 cm. First independent variables in this study used the variable that determine the percentage of substitution of fly ash by weight of cement that's equal 0%, 5%, 10%,15%, 20% and 25%. Concrete containing 20% fly ash as a partial substitution of cement compressive strength valve is a lower than the valve of compressive strength of normal concrete