摘要
采用砂浆包覆粗集料的工艺制备出了一种粗集料能够充分接触并有效嵌锁的高性能混凝土,并与普通C60高性能混凝土作对比研究了其性能。研究表明:在此方法制备的混凝土中,粗集料的体积分数达到了59%以上,粗集料在混凝土中可充分发挥强度骨架作用,混凝土28d抗压强度达到了70～90MPa。另外,以此种方法制备的混凝土具有较高的弹性模量、较好的体积稳定性和抗氯离子渗透性能。
A new type of coarse aggregate interlocking high performance concrete was prepared by using of mortar-coated aggregate technology,the coarse aggregates in this type of concrete contacted with each other firmly,its performance was studied comparing with a C60 high performance concrete prepared with normal process.Experimental results indicate that the concrete prepared with this method has the coarse aggregate volume fraction more than 59%,its 28 d compressive strength can reached 70~90 MPa,so the coarse aggregate in the concrete played a role of strength framework.In addition,the concrete prepared by this method have higher elastic modulus,better volume stability and resistance to chloride ion penetration.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2011年第12期18-21,共4页
Journal of Wuhan University of Technology
基金
湖北省公路局项目(鄂路技2009-610)
关键词
粗集料
集料嵌锁型混凝土
高性能混凝土
体积分数
coarse aggregate
aggregate interlocking concrete
high performance concrete
volume fraction
