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Effect of Organosilane-Modified Polycarboxylate Superplasticizers on Grain Size of Calcium Silicate Hydrate Seeds
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Xuechuan WANG1, Shanshan QIAN1, Ziming WANG2, Xiao LIU2, Chunyang ZHENG1
Journal of the Chinese Ceramic Society | 2022, 50(11) : 2818 - 2825
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Journal of the Chinese Ceramic Society | 2022, 50(11): 2818-2825
• Research Articles •
Effect of Organosilane-Modified Polycarboxylate Superplasticizers on Grain Size of Calcium Silicate Hydrate Seeds
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Xuechuan WANG1, Shanshan QIAN1, Ziming WANG2, Xiao LIU2, Chunyang ZHENG1
Affiliations
  • 1.Jiangsu China Railway ARIT New Materials Co., Ltd, Jiangsu Province Engineering Research Center (ARIT) of Concrete Polymer Additives, Nanjing 211505, China
  • 2.Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China

    • WANG Xuechuan (1991-), male, Master, Engineer. E-mail:

About Author:

WANG Xuechuan (1991-), male, Master, Engineer. E-mail:

Published: 2022-11-20 doi: 10.14062/j.issn.0454-5648.20220262
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In order to obtain stable and dispersed calcium silicate hydrate (C-S-H) crystal nucleus, improve its crystal nucleus-inducing effect on cement hydration, and realize the efficient utilization of cement clinker. Polycarboxylate superplasticizers (PCE) with different proportions of acrylic acid (AA) and silane group (KH570) were prepared via free radical polymerization to disperse calcium silicate hydrate (C-S-H) seeds. The corresponding C-S-H/PCE seeds were synthesized by a solution precipitation method. The grain size/size distribution, the stability of C-S-H/PCE seeds and the bonding mode of PCE on C-S-H interface were investigated. The results show that the PCE with an appropriate proportion of KH570 can effectively control the grain size of C-S-H/PCE seeds. The adsorption mode of PCE on C-S-H surface changes from Ca2+ complexation to a more stable Si—O—Si chemical bond, and the grain size of C-S-H/PCE seeds firstly decreases and then increases with the increase of KH570 ratio. At a KH570 to AA ratio of 1, the adsorption layer thickness of PCE on the surface of C-S-H is 2.5 nm, the grain size of C-S-H/PCE seeds is 60 nm and the stability is optimum. The PCE undergoes an intramolecular dehydration condensation process under alkaline condition with further increasing the proportion of KH570, forming a reticulated silicone resin structure, which is unfavorable for the regulation of grain size of C-S-H/PCE seeds.

calcium silicate hydrate  /  seeds  /  polycarboxylate superplasticizers  /  portland cement  /  early hydration
王学川, 钱珊珊, 王子明, 刘晓, 郑春扬. 硅烷减水剂对水化硅酸钙晶核粒径调控. 硅酸盐学报, 2022 , 50 (11) : 2818 -2825 . DOI: 10.14062/j.issn.0454-5648.20220262
Xuechuan WANG, Shanshan QIAN, Ziming WANG, Xiao LIU, Chunyang ZHENG. Effect of Organosilane-Modified Polycarboxylate Superplasticizers on Grain Size of Calcium Silicate Hydrate Seeds[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (11) : 2818 -2825 . DOI: 10.14062/j.issn.0454-5648.20220262
Appendix
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Year 2022 volume 50 Issue 11
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Article Info
doi: 10.14062/j.issn.0454-5648.20220262
  • Receive Date：2022-04-07
  • Online Date：2026-10-20
  • Published：2022-11-20
Article Data
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History
  • Received：2022-04-07
  • Revised：2022-04-14
Funding
Affiliations
    1.Jiangsu China Railway ARIT New Materials Co., Ltd, Jiangsu Province Engineering Research Center (ARIT) of Concrete Polymer Additives, Nanjing 211505, China
    2.Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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