期刊文献+

以阳离子螯合剂作为主缓凝剂与聚羧酸减水剂的复配研究 被引量:1

The study on the compound of polycarboxylate superplasticizer with positive ions chelating agent which regarded as main retarder
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摘要 为解决夏季高温时以葡萄糖酸钠作为聚羧酸减水剂复配的主要缓凝剂时,混凝土流动性损失过快的问题。以阳离子螯合剂、有机缓凝剂、无机缓凝剂、水泥调节剂通过正交试验,确定了缓凝剂各组分的最佳用量。结果表明:与只用葡萄糖酸钠作为缓凝剂时相比,以阳离子螯合剂作为主缓凝剂时,90min混凝土坍落度保留值可提高10%~20%,压力泌水率比降低20%~30%,28d抗压强度差异不明显,且解决了当葡萄糖酸钠用量过高时混凝土容易出现的抓底、泌水问题。 In order to solve the problem of rapid damage on concrete mobility when using sodium gluconate as main retarder compounded with polycarboxylate superplasticizer under summer high temperature. The optimum dosage of every component is determined by the orthogonal test of positive ions chelating agent,organic retarder, inorganic retarder, cement conditioning agent. The result indicated that, compared with using sodium gluconate as retarder only,when using positive ions chelating agent as main retarder, 90 min concrete slumps retention value improved about 10%-20%,pressured bleeding ratio reduced by 20%-30%,28 d compressive strength had no significant difference. The sinkage and bleeding problems which are easy to occur when adding excessive sodium gluconate are also solved.
出处 《新型建筑材料》 北大核心 2016年第9期80-83,共4页 New Building Materials
关键词 聚羧酸减水剂 缓凝剂 外加剂复配 polycarboxylate superplasticizer,retarder, admixture compound
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参考文献5

  • 1王浩,王启宝,逄建军,张力冉,王栋民.不同功能性官能团聚羧酸减水剂分散性能研究[J].新型建筑材料,2014,41(11):50-53. 被引量:9
  • 2王子明,王亚丽.混凝土高效减水剂[M].北京:化学工业出版社,2011:330. 被引量:15
  • 3陈建奎.混凝土外加剂原理与应用[M].2版.北京:中国计划出版社,2011. 被引量:1
  • 4冯浩,朱清江编著..混凝土外加剂工程应用手册 第2版[M].北京:中国建筑工业出版社,2005:960.
  • 5施惠生,孙振平,邓恺编著..混凝土外加剂实用技术大全[M].北京:中国建材工业出版社,2008:618.

二级参考文献15

  • 1Frank Winnefeld,Stefan Becker,Joachim Pakusch.Effects of the molecular architecture of comb-shaped superplasticizers on their performance in cementitious systems[J].Cement and Concrete Composites,2007,29 (4):251-262. 被引量:1
  • 2Jacek Golaszewski,Janusz Szwabowski.Influence of superplasticizers on rheological behaviour of fresh cement mortars[J].Cement and Concrete Research,2004,34 (2):235-248. 被引量:1
  • 3Felekoglu Burak,Sarikahya Hasan.Effect of chemical structure of polycarboxylate-based superplasticizers on workability retention of self-compacting concrete[J].Construction and Building Materials,2008,22 (9):1972-1980. 被引量:1
  • 4Kazuo Yamada,Tomoo Takabashi,Shunsuke Hanehara.Effects of the chemical structure on the properties of polycarboxylate-type superplasticizer[J].Cement and concrete Research,2000,30(2):197-207. 被引量:1
  • 5Tsuyoshi HIRATA,Toyoharu NAWA.The effect of polycarboxylate-type superplasticizer controlled its adsorption rate onto the cement particles by changing the polymer structure[J].Journal of Structural and Construction Engineering,2009,74(639):765-773. 被引量:1
  • 6Johann Plank,Bernhard Sachsenhauser.Impact of molecular structure on zeta potential and adsorbed conformation of α (-Allyl-ω-Methoxypolyehylene glycol-maleic anhydride superplasticizers[J].Journal of Advanced Concrete Technology,2006,4 (2):233-239. 被引量:1
  • 7Johann Plank,Christian Hirsch.Impact of zeta potential of early cement hydration phases on superplasticizer adsorption[J].Cement and Concrete Research,2007,37 (4):537-542. 被引量:1
  • 8Lucia Ferrari,Josef Kaufmann,Frank Winnefeld,et al.Interaction of cement model systems with superplasticizers investigated by atomic force microscopy,zeta potential,and adsorption measurements[J].Journal of Colloid and Interface Science,2010,347 (1):15-24. 被引量:1
  • 9王可良,刘玲.聚羧酸减水剂官能团及分子结构影响水泥初期水化浆体温升的研究[J].硅酸盐通报,2008,27(2):415-418. 被引量:20
  • 10任先艳,刘才林.聚羧酸减水剂与三种其他高效减水剂的复合效应研究[J].化学建材,2009,25(4):42-45. 被引量:7

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