Improvement of Clay Sensitivity of Polycarboxylate Superplasticizer by Gemini Quaternary Ammonium Salt

被引：0
|
作者：
Zhang G. [1 ]
Wang S. [1 ]
Zhang C. [1 ,2 ]
Cui H. [3 ]
机构：
[1] Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an
[2] Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology, Shaanxi University of Science & Technology, Xi'an
[3] Shanxi Yuncheng Hongxiang Building Materials Co., Ltd., Yuncheng
来源：
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2019年 / 22卷 / 01期
关键词：
Anti-clay; Gemini quaternary ammonium salt; Montmorillonite(MMT); Polycarboxylate superplasticizer;
D O I：
10.3969/j.issn.1007-9629.2019.01.012
中图分类号：
学科分类号：
摘要：
For the negative influence of clay on the rheological properties of cement slurry containing polycarboxylate superplasticizer, three cationic gemini quaternary ammonium were synthesized by triethylamine with 1, 4-dibromopropane, 1, 5-dibromopentane and p-dibromobenzyl respectively through quaternization. The corresponding products were labeled as KN1, KN2, and KN3, respectively. Then they were compounded with polycarboxylate water reducing agent RS-1 to reduce the clay sensitivity of the water reducer. The molecular structures of KN1, KN2 and KN3 were characterized by FTIR and 1H NMR. The gemini quaternary ammonium salt properties of the compounded system were evaluated by measuring fluidity of cement paste. Meanwhile, the dispersion, hydrophobicity and adsorption properties of the compounded system were investigated by XRD, water contact angle and total organic carbon(TOC). The results indicate that when the content of montmorillonite is 3%(by mass), KN1, KN2 and KN3 can significantly improve the fluidity of cement paste. Among those, KN3shows the best anti-clay performance. © 2019, Editorial Department of Journal of Building Materials. All right reserved.
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页码：81 / 86
页数：5
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共 12 条
  • [1] Chen Y., Zhang M., Dong Y., Inhibitory effect and mechanism of sulfonated lignin on the adsorption of polycarboxylate superplasticizer from montmorillonite, Journal of the Chinese Ceramic Society, 46, 2, pp. 212-217, (2018)
  • [2] Plank J., Sachsenhauser B., Experimental determination of the effective anionic charge density of polycarboxylate superplasticizers in cement pore solution, Cement and Concrete Research, 39, 1, pp. 1-5, (2009)
  • [3] Kong X., Hu B., Hou S., Et al., Synthesis and application performance of polycarboxylate superplasticizer, Journal of Tsinghua University(Nature Science), 49, 12, pp. 1925-1929, (2009)
  • [4] Lei L., Plank J., A study on the impact of different clayminerals on the dispersing force of conventional and modified vinyl ether based polycarboxylate superplasticizers, Cement and Concrete Research, 60, pp. 1-10, (2014)
  • [5] Wang Z., Kao Y., Wang L., Et al., Effect and mechanism of singlemineral clay on the dispersibility of polycarboxylate superplasticizer, Journal of Building Materials, 18, 5, pp. 879-887, (2015)
  • [6] Wang Z., Wu H., Xu Y., Et al., Inhibitory effect of clay on application performance of polycarboxylate water reducer, Journal of Building Materials, 17, 2, pp. 234-238, (2014)
  • [7] Zhu H., Zhang G., He Z., Et al., Preparation and properties of polycarboxylic superplasticizer with high tolerance to clay, Chemical Industry and Engineering Progress, 35, 9, pp. 2920-2925, (2016)
  • [8] Ng S., Plank J., Interaction mechanisms between Na montmorillonite clay and MPEG-based polycarboxylate superplasticizers, Cement and Concrete Research, 42, 6, pp. 847-854, (2012)
  • [9] Menger F.M., Littau C.A., Gemini-surfactants: Synthesis and properties, Journal of the American Chemical Society, 113, 4, pp. 1451-1452, (1991)
  • [10] Dong J., Synthesis and properties of cationic polymers and diquaternary ammonium clay stabilizers, (2009)
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