Effects of two oppositely charged colloidal polymers on cement hydration

被引：39
|
作者：
Lu, Zichen [1 ]
Kong, Xiangming [1 ]
Zhang, Chaoyang [1 ]
Jansen, D. [2 ]
Neubauer, J. [2 ]
Goetz-Neunhoeffer, F. [2 ]
机构：
[1] Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
[2] Univ Erlangen Nurnberg, GeoZentrum Nordbayern, Mineral, Schlossgarten 5a, D-91054 Erlangen, Germany
来源：
CEMENT & CONCRETE COMPOSITES | 2019年 / 96卷
基金：
中国国家自然科学基金;
关键词：
Cement hydration; Polymer latex; Ionic charge; Adsorption; Nucleation; POLYCARBOXYLATE SUPERPLASTICIZERS; PHASE DEVELOPMENT; LATEX-PARTICLES; ADSORPTION; KINETICS; RETARDATION; IMPACT;
D O I：
10.1016/j.cemconcomp.2018.11.014
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Effects of two styrene acrylate copolymer latexes with opposite charge properties on cement hydration were investigated by calorimetry, in-situ XRD and pore solution analysis. It is found that the anionic latex (AL) shows much stronger retardation effect than the cationic latex (CL) on OPC hydration, which should be caused by higher adsorption affinity of AL. Specifically, for aluminate reaction during OPC hydration, the strong adsorption of AL on positively charged C(3)A surface inhibits C(3)A dissolution and AFt formation, which invalidates the dependency of the secondary C(3)A dissolution on the sulfate depletion in normal OPC hydration. For the silicate reactions, mainly C3S hydration, AL again exhibits much higher adsorption on C3S and consequently stronger retardation than CL, which is caused by the reversal of charging property of C3S grains from negative in pure water to positive in Ca2+ rich solution. The adsorbed polymer may severely block nucleation sites for C-S-H precipitation.
引用
收藏
页码：66 / 76
页数：11
相关论文
共 50 条
  • [1] Colloidal gelation of oppositely charged particles
    Russell, Emily R.
    Sprakel, Joris
    Kodger, Thomas E.
    Weitz, David A.
    [J]. SOFT MATTER, 2012, 8 (33) : 8697 - 8703
  • [2] Ionic colloidal crystals of oppositely charged particles
    Mirjam E. Leunissen
    Christina G. Christova
    Antti-Pekka Hynninen
    C. Patrick Royall
    Andrew I. Campbell
    Arnout Imhof
    Marjolein Dijkstra
    René van Roij
    Alfons van Blaaderen
    [J]. Nature, 2005, 437 : 235 - 240
  • [3] Aggregation between oppositely charged colloidal particles
    Puertas, AM
    Fernández-Barbero, A
    De las Nieves, FJ
    [J]. TRENDS IN COLLOID AND INTERFACE SCIENCE XIV, 2000, 115 : 55 - 58
  • [4] Thermodynamics of micellization of oppositely charged polymers
    Castelnovo, M
    [J]. EUROPHYSICS LETTERS, 2003, 62 (06): : 841 - 847
  • [5] Polyelectrolyte complexation of two oppositely charged symmetric polymers: A minimal theory
    Mitra, Soumik
    Kundagrami, Arindam
    [J]. JOURNAL OF CHEMICAL PHYSICS, 2023, 158 (01):
  • [6] Ionic colloidal crystals of oppositely charged particles
    Leunissen, ME
    Christova, CG
    Hynninen, AP
    Royall, CP
    Campbell, AI
    Imhof, A
    Dijkstra, M
    van Roij, R
    van Blaaderen, A
    [J]. NATURE, 2005, 437 (7056) : 235 - 240
  • [7] Temperature effects on the dynamics of oppositely charged bipolarons scattering in conjugated polymers
    Liu, J. J.
    Meng, Y.
    Luo, Y. P.
    Zhang, Y. L.
    Di, B.
    [J]. EUROPEAN PHYSICAL JOURNAL B, 2023, 96 (10):
  • [8] Temperature effects on the dynamics of oppositely charged bipolarons scattering in conjugated polymers
    J. J. Liu
    Y. Meng
    Y. P. Luo
    Y. L. Zhang
    B. Di
    [J]. The European Physical Journal B, 2023, 96
  • [9] Effect of highly carboxylated colloidal polymers on cement hydration and interactions with calcium ions
    Lu, Zichen
    Kong, Xiangming
    Zhang, Chaoyang
    Cai, Yi
    [J]. CEMENT AND CONCRETE RESEARCH, 2018, 113 : 140 - 153
  • [10] Induced asymmetries in the heteroaggregation of oppositely charged colloidal particles
    Puertas, AM
    Fernández-Barbero, A
    de las Nieves, FJ
    [J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2003, 265 (01) : 36 - 43
12345