Kinetyka procesu hydratacji kompozytów cementowych z popiołem lotnym (original) (raw)

2011

Abstract

In the paper the results of laboratory investigation concerning the influence of: the water-cement ratio, the cement class and the time of curing on compressive strength of airentrained cement mortars is presented. The range of changeability factors was determined: X1 factor (W/C ratio) – from 0,5 to 0,6; X2 factor (the cement class) – 32,5, 42,5 and 52,5; X3 factor (the time of curing) – from 28 to 180 days. On the basis of the results a mathematical model was elaborated Y = f(X1, X2, X3) and the character and the influence grade of each factors were analysed. The factor space was examined for occurrence of extrema. The optimum factor values assuring maximum compressive strength were given. They are for the following factor values: X1 = -0,104; X2 = 0; X3 = 0,715, i.e.: W/C = 0,54 from the cement of 42,5 class and after 149 days of curing. Prace wykonano w Politechnice Bialostockiej w ramach realizacji pracy statutowej S/WBiIŚ/1/2010 finansowanej ze środkow MNiSW w latach 2010-2011

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