材料特性对三乙烯四胺双向电渗技术短期效果试验研究

发布时间：2018-05-18 22:38

本文选题：水胶比 + 初始氯离子含量　；参考：《混凝土》2017年01期

【摘要】：沿海、盐碱地电厂等混凝土建、构筑物受盐害作用,导致其使用寿命降低。故引入对三乙烯四胺双向电渗短期效果的研究。对混凝土试块进行恒流通电,采用通电时间t=15 d,通电电流密度I=3 A/m2,研究不同水胶比、初始氯离子含量、保护层厚度作用下,三乙烯四胺阻锈剂在混凝土试块中的双向电渗效果。结果表明,混凝土试块中氯离子排出量和水胶比、初始氯离子含量成递增关系,和保护层厚度成递减关系;三乙烯四胺阻锈剂迁入量和水胶比成递增关系,和初始氯离子含量关系不明显,和保护层厚度成递减关系。同时,通电后测量,钢筋的腐蚀电势以及钢筋/溶液界面电荷转移电阻均有不同程度增大,但其腐蚀电流也有一定程度增大。
[Abstract]:Along the coast, saline-alkali power plants and other concrete construction, structures affected by salt damage, resulting in a reduced service life. Therefore, the short-term effect of bidirectional electroosmosis of triethylenetetramine was studied. The effect of triethylenetetramine rust inhibitor on the bidirectional electroosmosis of concrete specimens with different water / binder ratio, initial chlorine ion content and thickness of protective layer was studied by using constant current electrification and electric current time t ~ (15) d and current density I ~ (3) A / m ~ (2). The results show that the chlorine ion excretion and the water / binder ratio and the initial chlorine ion content in the concrete sample are increased, and the thickness of the protective layer is decreased, while the migration of triethylenetetramine rust inhibitor and the water / binder ratio are increased. The relationship with the initial chlorine content is not obvious, and decreases with the thickness of the protective layer. At the same time, the corrosion potential of steel bar and the charge transfer resistance at the interface of steel bar / solution are increased to some extent, but the corrosion current is also increased to a certain extent.
【作者单位】：中国电力工程顾问集团中南电力设计院有限公司;杭州市质量技术监督检测院;浙江大学结构工程研究所;
【基金】：国家自然基金(51408534) 浙江省自然基金(LQ14E080010) 杭州市科技计划(20131831K31,20140533B42,20130533B18) 江苏省交通运输科技项目(2015T18) 浙江省质量技术监督系统科研计划(20130243,20140229,20160137) 杭州市重大科技创新专项(20142011A41)
【分类号】：TU528.04

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