硅酸盐通报2017，Vol.36Issue(11)：3619-3624,6.
冻融环境下钢筋与粉煤灰混凝土的粘结承载力
Bond Capacity of Reinforcement to Fly Ash Concrete under Freeze-thaw Cycle
摘要
Abstract
Through the direct pull-out test of the fly ash concrete specimens,it was analyzed for change rule of fly ash and freeze-thaw on initial bond strength,bond slip the splitting strength,ultimate bond strength and the toughness evaluation index which expressed as an area under the bond strength slip curve. The results of pull-out test with different fly ash dosage and freeze-thaw cycle number show that the bonding strength between steel bar and concrete decreases as the content of fly ash increasing;bond toughness decreases and then increases with the increasing of fly ash dosage,large dosage of fly ash specimen showes good toughness in the loading process;the influence of freeze-thaw action on ultimate bond strength decreases with increasing of fly ash,40% fly ash dosage specimen under freeze-thaw environment showes good toughness. The addition of much fly ash can slow down the freeze-thaw damage of bonded specimens to some extent.关键词
直接拔出试验/粉煤灰混凝土/冻融循环/粘结强度/韧性Key words
pull-out test/fly ash concrete/freeze-thaw cycle/bonding strength/toughness分类
建筑与水利引用本文复制引用
牛建刚,左付亮,郝吉,郝翠娟,邢帅..冻融环境下钢筋与粉煤灰混凝土的粘结承载力[J].硅酸盐通报,2017,36(11):3619-3624,6.基金项目
国家自然科学基金(51368042) （51368042）
