Experimental study on the influence of different dosage slag cement hydration under 3

Test by using the direct method and the approximate rectangle method to study the hydration heat of cement paste and degree of hydration with different dosage of slag powder of 3℃ under the environment of a certain age.Through the test of cement hydration heat release calculation result in cement paste that adding different dosage of slag powder on the hydration degree of 3 ℃;comparison of different proportioning of cement slurry hydration heat and hydration degree of cement admixture slag added that its hydration law.At the same time,put forward the improvement measures of cement paste at low temperature hydration heat determination.The results show that 10%30%,50%of the amount of slag replacement in 1,3,7,14,28 d under the age of cement hydration heat released than without admixture of slag cement paste to put low l%to 8%,at the same time that at certain age,cement replacement rate is higher the lower the degree of hydration of the cement.