不同应力比下玄武岩纤维水泥基复合材料抗氯离子渗透性研究

Study on the Resistance to Chloride Ion Permeability of Basalt Fiber Cement Composites under Different Stress Ratios

通过循环加载压缩及电通量试验,研究了玄武岩纤维长度、养护龄期和循环加载压缩试验应力比对玄武岩纤维水泥基复合材料(BFCC)抗氯离子渗透性的影响。结果表明,随着养护龄期的增加,BFCC的6 h电通量值逐渐减小;随着玄武岩纤维长度的增加,BFCC的6 h电通量呈降低趋势,但是,当纤维长度从12 mm增加到20 mm时,BFCC的6 h电通量降低速率减小;随着应力比的增加,BFCC的6 h电通量呈先降低后增加的趋势,且应力比为0.2,BFCC的6 h电通量值最小。

Based on the cyclic loading compression and electrical flux tests,the effects of the length of basalt fiber,curing age and the stress ratio of cyclic loading compression test on the resistance to chloride ion permeability of basalt fiber cement composites(BFCC)were studied.The results show that with the increase of curing age,the 6 h electric flux value of BFCC gradually decreases.When the length of basalt fiber increases,the 6 h electric flux of BFCC decreases,however,when the length of basalt fiber increases from 12 mm to 20 mm,the decrease rate of 6 h electric flux of BFCC decreases.When the stress ratio increases,the 6 h electric flux of BFCC decreases first and then increases,and when the stress ratio is 0.2,the 6 h electric flux of BFCC is the smallest.