应用化学 ›› 2024, Vol. 41 ›› Issue (11): 1585-1595.DOI: 10.19894/j.issn.1000-0518.240121

• 研究论文 • 上一篇    下一篇

高原大体积混凝土表面污染物清洗剂对混凝土性能的影响

刘莉1(), 李雁英2   

  1. 1.山西职业技术学院,太原 030006
    2.山西大学电力与建筑学院,太原 030006
  • 收稿日期:2024-04-12 接受日期:2024-09-02 出版日期:2024-11-01 发布日期:2024-12-04
  • 通讯作者: 刘莉
  • 基金资助:
    山西省高等学校科技创新项目(2022L694)

Research on the Influence of Surface Pollutant Cleaning Agents on the Performance of High-Altitude Large Volume Concrete

Li LIU1(), Yan-Ying LI2   

  1. 1.Department of Construction Engineering,Shanxi Polytechnic College,Taiyuan 030006,China
    2.School of Electric Power,Civil Engineering and Architecture,Shanxi University,Taiyuan 030006,China
  • Received:2024-04-12 Accepted:2024-09-02 Published:2024-11-01 Online:2024-12-04
  • Contact: Li LIU
  • About author:1315345966@qq.com
  • Supported by:
    Science and Technology Innovation Program for Higher Education Institutions in Shanxi Province(2022L694)

摘要:

以脂肪醇聚氧乙烯醚(AEO-9)、十二烷基磺酸钠、柠檬酸和羟基乙叉二膦酸为实验因素,除锈量为评价指标开展正交实验,确定清洗剂的最佳基础配合比,在此基础上加入柠檬酸铵和羟基乙酸进行氧化物的清洗,加入木瓜蛋白酶进行霉斑的清洗,通过Matlab对比污染前、污染后和清洗后高原大体积混凝土的表面明度,并研究清洗剂对高原大体积混凝土抗压强度、混凝土表面孔隙率的影响。 研究结果表明: 通过正交实验确定清洗剂配方X的最佳基础配比为: 柠檬酸(质量分数5%)、羟基乙叉二膦酸(质量分数4%)、十二烷基磺酸钠(质量分数3%)和AEO-9(质量分数2%); 通过优化实验得出金属氧化物清洗剂配方Y的最佳配比为: 配方X、柠檬酸铵(质量分数3%)、羟基乙酸(质量分数2%),霉斑清洗剂配方Z的最佳配比为: 配方X、木瓜蛋白酶(质量分数3%); 通过计算强度损失率可知混凝土最小强度损失率出现在腐蚀1 d,最大强度损失率出现在腐蚀7 d,清洗剂Y的强度损失率比清洗剂X、Z大; 经过清洗剂浸泡后的混凝土材料与未腐蚀混凝土材料相比,孔隙数增多,空隙间距增大。

关键词: 大体积混凝土, 清洗剂, 强度损失率, 除锈量

Abstract:

Using AEO-9, sodium dodecyl sulfonate, citric acid, and hydroxyethylenediphosphate as experimental factors and rust removal as evaluation indicators, an orthogonal experiment was conducted to determine the optimal basic mix ratio of the cleaning agent. On this basis, ammonium citrate and hydroxyacetic acid were added for oxide cleaning, and papain was added for mold cleaning. The surface brightness of high-altitude large volume concrete before pollution, after pollution, and after cleaning were compared using Matlab, and the effect of cleaning agents on the compressive strength and surface porosity of high-altitude large volume concrete was studied. The research results indicate that the optimal basic ratio of cleaning agent formula X determined through orthogonal experiments is citric acid (5%, mass percent), hydroxyethylene diphosphate (4%, mass percent), sodium dodecyl sulfonate (3%, mass percent) and AEO-9 (2%, mass percent); The optimal ratio of metal oxide cleaning agent formula Y through optimization experiments is: formula X, ammonium citrate (3%, mass percent), hydroxyacetic acid (2%, mass percent), and the optimal ratio of mold cleaning agent formula Z is: formula X, papain (3%, mass percent); By calculating the strength loss rate, it can be concluded that the minimum strength loss rate of concrete occurs after 1 day of corrosion, and the maximum strength loss rate occurs after 7 days of corrosion. The strength loss rate of cleaning agent Y is greater than that of cleaning agents X and Z; Compared with non corroded concrete materials, the concrete material soaked in cleaning agents has an increase in the number of pores and spacing between pores.

Key words: Large volume concrete, Cleaning agent, Strength loss rate, Rust removal amount

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