大掺量矿渣粉混凝土抗碳化性能的研究  

Study on Carbonization of High Volume Blast Furnace Slag Powder Concreted

作　　者：丁红霞[1] 刘森忠[1] 陈烨 高蔚[1] 

机构地区：[1]南昌大学科学技术学院,南昌330029 [2]长沙建筑工程学校,长沙410004

出　　处：《科学技术与工程》2013年第4期1068-1072,共5页Science Technology and Engineering

摘　　要：研究了用50%和70%(质量分数)矿渣粉替代硅酸盐水泥对混凝土力学性能和抗碳化性能的影响,对混凝土的碳化方程(X=Kt^b)进行回归分析。结果表明:矿渣粉掺量为50%时,其混凝土28 d抗压强度甚至优于硅酸盐混凝土,但碳化深度和碳化系数K随着矿渣粉掺量的增加而增加,而b值则呈下降趋势,且在同一胶凝材料的情况下,K值与强度负相关。The influences of portland cement substituted by blast furnace slag powder （BFSP） in a high pro- portion （50% and 70% ） on the mechanical properties and carbonization of concrete were studied, and regression analysis of the carbonation equations of concrete （X -- Kt ） were conducted. The results show that when the content of BFSP is 50 %, the compressive strengths at 28 day of BFSP concrete are even better than portland cement con- crete while the carbonation depth and carbonation rate is increased with the increment of BFSP quantity added and the b value is opposite, there is a negative correlation between K value and compressive strength of concrete with same cementing materials.

关 键 词：矿渣粉 大掺量 碳化系数 

分 类 号：TQ172.717[化学工程—水泥工业]