摘要
为进一步提升混凝土的耐久性能,文中主要就水灰比、粉煤灰掺量、用水量及引气剂掺量对桥梁混凝土电通量的影响进行研究。结果表明,水灰比越小、用水量越小、引气剂掺量越多,桥梁混凝土的抗氯离子渗透性能越强;水灰比每增加1,桥梁混凝土的电通量增加8702.7 C;用水量每增加1 kg/m^(3),桥梁混凝土的电通量增加25.5 C;曲线下降阶段粉煤灰掺量每增加1%,桥梁混凝土的电通量降低7.7 C;引气剂掺量每增加1%,桥梁混凝土的电通量降低19560 C。为提高桥梁混凝土的抗氯离子渗透性能,应尽可能降低桥梁混凝土的水灰比,降低桥梁混凝土中的用水量。
In order to further improve the durability of concrete,this paper mainly studies the effects of water-cement ratio,fly ash content,water consumption and air entrainment agent content on the electric flux of bridge concrete.The results show that the smaller the water-cement ratio,the smaller the water consumption and the more air entrainment agent,the stronger the chloride ion permeation resistance of bridge concrete.The electric flux of bridge concrete increases by 8702.7 C when the water-cement ratio increases by 1.The electric flux of bridge concrete increases by 25.5 C for every 1 kg/m'increase of water consumption.When fly ash content increases by 1%,the electric flux of bridge concrete decreases by 7.7 C.The electric flux of bridge concrete decreases by 19560 C with 1%increase of air entraining agent.In order to improve the resistance of bridge concrete to chloride ion penetration,the water-cement ratio of bridge concrete should be reduced as much as possible,and the water consumption in bridge concrete should be reduced.
作者
袁江涛
Yuan Jiangtao(Gansu Province Gannan Highway Development Center,Gannan,Gansu 747000)
出处
《江西建材》
2024年第2期29-31,共3页
Jiangxi Building Materials
关键词
桥梁工程
混凝土
影响因素
抗氯离子渗透性
Bridge engineering
Concrete
Influencing factors
Resistance to chloride ion penetration
