C50免振自密实混凝土耐久性及长期性能的试验研究

Test study of durability and long-term performance of self-compacting C50 concrete without vibration

本文研究C50免振自密实混凝土的力学性能、耐久性能及长期性能,所配制的免振自密实混凝土抗渗等级大于P39,抗冻等级大于F200,28天龄期的氯离子扩散系数为1.58×10-12m2/s,90天龄期的收缩比普通混凝土小32%,90天龄期的徐变比普通混凝土小27%。

This paper studies the mechanical properties, durability and long-term performance of self-compacting C50 concrete withoutvibmtion. The grade of the permeability resistance of the proportioned C50 concrete herewith is greater than P39 and the frost resistance is greater than F200. The chlorine ion diffusion coefficient of the concrete at age of 28 days is 1.58× 10^-12 m^2/s, the shrinkage and creep of the concrete at age of 90 days are respectively 32% and 27% less than those of the normal concrete.