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Effect of Aggregate Chemical Properties on Nucleation and Growth of Calciun Silicate Hydrate
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Xiaowei OUYANG1, Shida XU1, Yuwei MA1, Guang YE2
Journal of the Chinese Ceramic Society | 2021, 49(5) : 972 - 979
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Journal of the Chinese Ceramic Society | 2021, 49(5): 972-979
• Research Article •
Effect of Aggregate Chemical Properties on Nucleation and Growth of Calciun Silicate Hydrate
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Xiaowei OUYANG1, Shida XU1, Yuwei MA1, Guang YE2
Affiliations
  • 1.Guangzhou University-Tamkang University Joint Research Center for Engineering Structure Disaster Prevention and Control, Guangzhou University, Guangzhou 510006, China
  • 2.Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The Netherlands

    • OUYANG Xiaowei (1987-), male, Ph.D., Associate Professor. E-mail:

About Author:

OUYANG Xiaowei (1987-), male, Ph.D., Associate Professor. E-mail:

Published: 2021-05-20 doi: 10.14062/j.issn.0454-5648.20200759
Outline
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It is of great significance for the optimization and performance improvement of aggregates to investigate the influence of aggregate chemical properties on the nucleation and growth of calcium silicate hydrate (C-S-H) and its mechanism. In this work, limestone, quartz and magnesite were used as aggregates. The interactions between different aggregates and ions in a simulated solution were determined via zeta potential measurement. Also, the nucleation and growth of C-S-H on the surface of these aggregates were analyzed by scanning electron microscopy. The hydration heat of cement pastes with the micro-aggregates was examined to investigate the effect of aggregate chemical properties on the early hydration of cement. The results show that limestone surface has a strong adsorption of Ca2+ (i.e., chemical adsorption), leading to a high density of C-S-H nuclei and directional growth of C-S-H, and thus greatly promoting the hydration of cement. The adsorption of Ca2+ on quartz surface is due to electrostatic force, which is weaker than that due to the chemical adsorption. The density of C-S-H nuclei on quartz surface is thus much lower than that on limestone surface. In the case of magnesite, its surface has a high affinity for SO42- rather than Ca2+, reducing the nucleation density of C-S-H on the surface of magnesite, and thus slowing down the early hydration of cement.

limestone  /  quartz  /  calcium silicate hydrate  /  zeta potential  /  hydration  /  aggregate  /  cement
欧阳小伟, 许世达, 马玉玮, 叶光. 集料化学特性对C-S-H成核和生长的影响. 硅酸盐学报, 2021 , 49 (5) : 972 -979 . DOI: 10.14062/j.issn.0454-5648.20200759
Xiaowei OUYANG, Shida XU, Yuwei MA, Guang YE. Effect of Aggregate Chemical Properties on Nucleation and Growth of Calciun Silicate Hydrate[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (5) : 972 -979 . DOI: 10.14062/j.issn.0454-5648.20200759
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Year 2021 volume 49 Issue 5
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Article Info
doi: 10.14062/j.issn.0454-5648.20200759
  • Receive Date：2020-10-09
  • Online Date：2026-10-30
  • Published：2021-05-20
Article Data
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History
  • Received：2020-10-09
  • Revised：2020-10-27
Funding
Affiliations
    1.Guangzhou University-Tamkang University Joint Research Center for Engineering Structure Disaster Prevention and Control, Guangzhou University, Guangzhou 510006, China
    2.Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The Netherlands
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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
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
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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