Research Of The Influence Rule On The Dosage Of Cement On The Strength And Durability Of The Concrete

At present, there are few studies about the influence of cement content on strength and durability of concrete.However,people just know that the amount of cement is too much or not enough is unfavorable to the quality of concrete, this is no specific reference in the rationality selection of cement content.Basing upon large amount of experiments in this paper, this paper studies the influences of cement content on strength and durability of concrete.Research draw the following conclusions:(1)Mortar strength increases with the increase of cement content.After cement content reached 300kg/m3,mortar strength growth tends to slow.It's high level of mortar strength when the average thickness of aggregate in 3.70×10-2mm to4.44×10-2mm.(2)The experiments showed that the best contribution to the strength and durability of concrete when cement content reached 350kg/m3.It's high level of mortar strength when the average thickness of aggregate in 5.10×10-2mm to6.20×10-2mm.(3)In the early stage,the influence of cement content on strength and durability of fly ash concrete and ordinary concrete,same as,he best contribution to the strength and durability of fly ash concrete when cement content in 350kg/m3 to 400kg/m3.The test results of the studies to guide the rational use of cement. It's great positive significance and value to promote concrete materials green development.