基于牺牲阳极法的LiBr改性砂浆性能研究
Study on the Performance of LiBr Modified Mortar Based on Sacrificial Anode Method
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关键词：
牺牲阳极；导电砂浆；LiBr；电阻率；阳极活性
Key words：
Sacrificial anode; Conductive mortar; Lithium bromide; Resistivity; Anode activity
刊期：
2020年3期 No.287 P24-26+30
DOI：
10.19761/j.1000-4637.2020.03.024.04
文章编号：
基金项目：
国家自然科学基金资助项目（21576300）。
作者：
张东方1,2,3；方 翔1,2；范志宏1,2；陈 龙1,2；王 毅3
单位：
1.水工构造物耐久性技术交通运输行业重点实验室，广州 510230；2.中交四航工程研究院有限 公司，广州 510230；3.中山大学化学工程与技术学院，珠海519082
摘要
摘要: 通过掺入LiBr制备了高活性导电砂浆，研究了LiBr掺量与砂浆电阻率及阳极活性之间的关系。结果表明：LiBr能显著降低砂浆的电阻率，并随掺量增加电阻率降低。当掺量为160 g时，砂浆的电阻率小于100 Ω·cm。LiBr的掺入能够活化阳极及促进溶解产物扩散，使阳极具备可持续发出保护电流的能力。
Abstract: High active conductive mortar was prepared by adding LiBr, and the relationship between the content of lithium bromide and the resistivity of mortar and anodic activity was systematically studied. The results show that the resistivity decreases with increasing the content of lithium bromide, and the resistivity is less than 100 Ω·cm when the content is 160 g. Moreover, the addition of lithium bromide helps to activate the anode and promote the diffusion of dissolved products, thus enable anode to generate a continuous protective current.
结论
（1）掺LiBr活性组分能够显著改善砂浆导电性，并且随掺量增加砂浆电阻率逐渐降低，LiBr高掺量160 g的砂浆导电性几乎不受龄期影响。
（2）砂浆内LiBr通过提升锌牺牲阳极表面反应活性及输送阳极溶解产物使阳极具备可持续发出保护电流的能力
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引用本文
张东方,方翔,范志宏,等.基于牺牲阳极法的LiBr改性砂浆性能研究[J].混凝土与水泥制品,2020(3):24-26+30.
ZHANG D F,FANG X,FAN Z H,et al.Study on the Performance of LiBr Modified Mortar Based on Sacrificial Anode Method[J].China Concrete and Cement Products,2020(3):24-26+30.
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