正交试验法研究影响电化学除盐效率的因素

成立; 王小萍; 黄绪泉; 余其俊; 邓春林; 韦江雄

doi:10.13204/j.gyjz200706019

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正交试验法研究影响电化学除盐效率的因素

doi: 10.13204/j.gyjz200706019

1.
1 荆楚理工学院荆门 448000;
2.
2 华南理工大学特种功能材料教育部重点实验室广州 510640

基金项目:

湖北省教育厅重点项目(D200567001)资助;广东省科技攻关项目(2005B32801004)资助

详细信息

作者简介:
成立女 1968年7月出生副教授 E-mail:chengli1968 @126 com

中图分类号: TU528
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- 文章访问数: 80
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- PDF下载量: 57
- 被引次数: 0
出版历程
- 收稿日期: 2006-09-05
- 刊出日期: 2007-06-20

INVESTIGATION ON FACTORS OF INFLUENCING THE EFFICIENCY OF ELECTROCHEMICAL CHLORIDE EXTRACTION BY ORTHOGONAL TEST METHOD

1.
1 Jingchu University of Technology Jingmen 448000;
2.
2 Key Lab.of Specially Functional Materials and Advanced Manufacturing Technology of Ministry of Edu.,South China University of Technology Guangzhou 510640

摘要

摘要: 用正交试验法对影响电化学除盐效率的主次因素进行研究,结果表明,电流密度的影响最大,其次是电解质溶液及水灰比,而初始氯离子掺量的影响最小。用压汞法测定孔隙率,发现经过电化学除盐后,钢筋附近混凝土中小于30nm的孔的数量增加,而远离钢筋的混凝土样孔隙率减小。本试验最优电化学除盐组合是电流密度为3A/m2,采用0.001mol/L Li2B4O7的饱和Ca(OH)2电解液。
- 正交试验 /
- 电化学除盐 /
- 电流密度 /
- 水灰比 /
- 电解质溶液
Abstract: The primary and secondary factors of influencing the efficiency of electrochemical chloride extraction(ECE) were investigated by orthogonal test method,the results show that current density has the largest effect,the second is the type of electrolytes and water to cement ratio of concrete,initial chloride content has the least effect.Mercury intrusion porosimetry analysis for the samples ECE-treated and untreated ones were performed,for the ECE-treated samples porosity less than 30nm near rebar increased and that far from rebar decreased.When an electrolyte composed of 0.001 mol/L Li2B4O7 and saturated Ca(OH)2 solution and electrical current density of 3 A/m2 were adopted,the best desalination efficiency can be achieved.
- orthogonal test /
- electrochemical chloride extraction(ECE) /
- current density /
- water to cement ratio /
- electrolyte porosity

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参考文献(4)

[2] 中国科学院数学研究所概率统计室.常用数理统计表.北京:科学出版社,1974:60

洪定海.混凝土中钢筋的腐蚀与防护.北京:中国铁道出版社,1998

[3] Michael Siegwart,Lyness John F,McFarland Brian J.Change of Pore Size inConcrete due to Electrochemical Chloride Extraction and Possible Implications for the Migration of Ions.Cement and Concrete Research,2003,33:1 211-1 221

[4] Banfill P F G.Re-Alkalisation of Carbonated Concrete Effect on Concrete Properties.Constr.Build.Mater,1997,11(4):255-258

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