Effect of polycarboxylate-type superplasticizer on the paste fluidity based on the water film thickness of flocs

被引：0
|
作者：
WU Qiong [1 ]
AN XueHui [1 ]
LIU ChunNa [1 ]
机构：
[1] State Key Laboratory of Hydroscience and Engineering,Tsinghua University
来源：
Science China(Technological Sciences) | 2014年 / 08期
基金：
中国国家自然科学基金;
关键词：
water film thickness of flocs; superplasticizer; sedimentation balance method; fluidity; limestone powder paste;
D O I：
暂无
中图分类号：
TU528.042.2 [减水剂];
学科分类号：
摘要：
The excess water film theory and the properties of flocs are integrated to examine the effect of the polycarboxylate-type superplasticizer on the paste fluidity.The theory states that excess water can surround the flocs rather than the particles and that the cell consists of a floc and a superficial water film.Experiments on limestone powder pastes were conducted to verify the theory.The superplasticizer dosage(sp%)and the water–powder ratio by volume(Vw/Vp)were systematically varied.A sedimentation balance method was used to measure the size distribution of the flocs in the limestone powder pastes.The water film thickness(WFT)of flocs was then calculated and shown to determine the paste fluidity.Based on this WFT of flocs,the effect of the sp on the paste fluidity was determined and then compared with the effect of water.
引用
收藏
页码：1522 / 1531
页数：10
相关论文
共 50 条
  • [41] Relationship between Fluidity of Cement Paste with Fluoride Ion and Type of Superplasticizer
    Matsuzawa, Kazuki
    Miyauchi, Masahiro
    Sakai, Etsuo
    JOURNAL OF ADVANCED CONCRETE TECHNOLOGY, 2018, 16 (11) : 577 - 586
  • [42] Compatibility of modified magnesium slag-based backfill materials to polycarboxylate superplasticizer: Flow, water-film thickness and strength
    Shao, Chengcheng
    Liu, Lang
    Zhang, Xiaoyan
    Xie, Lei
    Ruan, Shishan
    Han, Yandong
    Ding, Xiang
    ENVIRONMENTAL RESEARCH, 2025, 267
  • [43] The Effect of a Blended Polycarboxylate Superplasticizer on the Rheology of Self-Compacting Concrete Paste
    Swartz, Maverick
    Mbasha, Willy
    Haldenwang, Rainer
    APPLIED SCIENCES-BASEL, 2023, 13 (07):
  • [44] What is the mechanism of the fiber effect on the rheological behavior of cement paste with polycarboxylate superplasticizer?
    Zhang, Kun
    Pan, Lisha
    Li, Jiacheng
    Lin, Chang
    CONSTRUCTION AND BUILDING MATERIALS, 2021, 281
  • [45] Effect of borax on rheology of calcium sulphoaluminate cement paste in the presence of polycarboxylate superplasticizer
    Tan, Hongbo
    Guo, Yulin
    Zou, Fubing
    Jian, Shouwei
    Ma, Baoguo
    Zhi, Zhenzhen
    CONSTRUCTION AND BUILDING MATERIALS, 2017, 139 : 277 - 285
  • [46] Effects of packing density and water film thickness on the fluidity behaviour of cemented paste backfill
    Qiu, Jingping
    Guo, Zhenbang
    Yang, Lei
    Jiang, Haiqiang
    Zhao, Yingliang
    POWDER TECHNOLOGY, 2020, 359 (359) : 27 - 35
  • [47] Effect of polycarboxylate superplasticizer and calcium nitrite on the fluidity and early strength of belite sulfoaluminate cement
    Fu, Juan
    Hu, Baorui
    Guo, Wei
    Hu, Yueyang
    Jiang, Cuifeng
    ADVANCES IN CEMENT RESEARCH, 2023, 36 (04) : 164 - 178
  • [48] Concrete mix design based on water film thickness and paste film thickness
    Li, Leo G.
    Kwan, Albert K. H.
    CEMENT & CONCRETE COMPOSITES, 2013, 39 : 33 - 42
  • [49] Investigating the effect of polycarboxylate-ether based superplasticizer on the microstructure of cement paste during the setting process
    Zhu, Weiwei
    Feng, Qingge
    Luo, Qi
    Yan, Jun
    Lu, Chun
    CASE STUDIES IN CONSTRUCTION MATERIALS, 2022, 16
  • [50] Effects of Using Silica Fume and Polycarboxylate-Type Superplasticizer on Physical Properties of Cementitious Grout Mixtures for Semiflexible Pavement Surfacing
    Koting, Suhana
    Karim, Mohamed Rehan
    Mahmud, Hilmi
    Mashaan, Nuha S.
    Ibrahim, Mohd Rasdan
    Katman, Herdayati
    Husain, Nadiah Md
    SCIENTIFIC WORLD JOURNAL, 2014,
12345