Effect of plasticizer on some of materials and characteristics of concrete

Abstract

Using of plasticizer as added to mixing materials of concrete has affect on proportion of this materials and fresh ,harden properties of it . Research is show that effect through study behavior three mixing with cement content (380,300,210) kg/m3with three plasticizer percents (1,2,3 ) % by weight of cement for each of mix . Then results show that increasing slump in fresh mixture with 18% percent, and increasing with tensile , compressive strength and density with ( 34.93 , 58.82 , 3.5 ) % respectively, and absorption decrease with 30.1% for 380 kg/m3 cement content and 3% plasticizer at 28 days with respect to reference mixture . The research indicates that we can reduce the quantity of influential materials in mixture, such as w/c ratio 20% with using 3% plasticizer . for three different cement content given very expensive properties fresh and harden concrete . In comparison with reference mixture without plasticizer and decrease in cement content 21% with 1% plasticizer given a same properties which is given from without plasticizer with 380 kg/m3 cement content .