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作者:

Lu, Zichen (Lu, Zichen.) | Kong, Xiangming (Kong, Xiangming.) | Liu, Hui (Liu, Hui.) | Wang, Ziming (Wang, Ziming.) | Zhang, Yanrong (Zhang, Yanrong.) | Dong, Biqin (Dong, Biqin.) | Xing, Feng (Xing, Feng.)

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Scopus SCIE

摘要:

Incorporation of silane groups into polycarboxylate superplasticizer (PCE) opens a new technical approach to improve properties of PCE, such as to enhance the adsorption of PCE on cement and hence the dispersing performance, to minimize the retardation effect, and potentially to increase mechanical strength of cement mortars. Silylated PCEs were synthesized using silane monomer via radical copolymerization. Dispersing effect, adsorption behaviors, and influences on mortar strength of these polymers were systematically investigated. Results show that increasing the incorporation of sliane groups in PCE promotes the adsorption of polymer on cement surface and hence leads to good fluidity retention capability. Furthermore, sulfate resistance ability of silylated PCE is superior due to stronger chemical adsorption of polymer on cement surface. The retardation effect of PCE is minimized by the introduction of silane groups. The addition of silylated PCE significantly increases 3days compressive strength without notably affecting the long-term strength. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44161.

关键词:

adsorption mechanical properties plasticizer nonpolymeric materials and composites copolymers

作者机构:

  • [ 1 ] [Lu, Zichen]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
  • [ 2 ] [Kong, Xiangming]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
  • [ 3 ] [Zhang, Yanrong]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
  • [ 4 ] [Liu, Hui]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Wang, Ziming]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 6 ] [Dong, Biqin]Shenzhen Univ, Guangdong Prov Key Lab Durabil Marine Civil Engn, Dept Civil Engn, Shenzhen 518060, Peoples R China
  • [ 7 ] [Xing, Feng]Shenzhen Univ, Guangdong Prov Key Lab Durabil Marine Civil Engn, Dept Civil Engn, Shenzhen 518060, Peoples R China

通讯作者信息:

  • [Kong, Xiangming]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China

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来源 :

JOURNAL OF APPLIED POLYMER SCIENCE

ISSN: 0021-8995

年份: 2016

期: 43

卷: 133

3 . 0 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:221

中科院分区:3

被引次数:

WoS核心集被引频次: 15

SCOPUS被引频次: 22

ESI高被引论文在榜: 0 展开所有

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