摘要
以掺15%粉煤灰的砼为基准,研究了纳米CaCO3(NC)砼耐干湿腐蚀循环的性能.试验结果表明:与基准砼相比,在70次和110次循环后,NC掺量为1%时砼的相对耐干湿循环系数分别提高11%和13%,但过高的NC掺量可能对砼的耐久性有副作用;同时对NC砼性能的机理进行了分析.
Regarding fly ash concrete as normal basis, the performances of concretes with nm level CaCO3 （NC） are investigated in drying-wetting cycle in corrosive environments. The result shows that comparing with normal concrete, after 70 and 110 times drying-wetting cycle, modulus ratios of drying-wetting cycle in corrosive environments of the concrete with 1% NC have increased by 11% and 13% respectively. Too much NC in concrete would decrease the durability of the concrete. Finally, the mechanism for the concrete with NC is discussed.
出处
《重庆交通学院学报》
2007年第2期131-135,共5页
Journal of Chongqing Jiaotong University
基金
西南交通大学科学研究基金(2005A01)资助
关键词
纳米CACO3
粉煤灰
砼
干湿腐蚀循环
nm level CaCO3
fly ash
concrete
drying-wetting cycle in corrosive environments
