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Modification of Cellulose Nanocrystals on Microstructure of Calcium Silicate Hydrate
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Dapeng ZHENG, Yuan FANG, Hongzhi CUI
Journal of the Chinese Ceramic Society | 2023, 51(5) : 1146 - 1153
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Journal of the Chinese Ceramic Society | 2023, 51(5): 1146-1153
• Research Articles •
Modification of Cellulose Nanocrystals on Microstructure of Calcium Silicate Hydrate
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Dapeng ZHENG, Yuan FANG, Hongzhi CUI
Affiliations
  • College of Civil and Transportation Engineering, Key Laboratory for Resilient Infrastructures of Coastal Cities (MOE), Shenzhen University, Shenzhen 518060, Guangdong China

    • ZHENG Dapeng (1991-), male, Ph.D. E-mail:

About Author:

ZHENG Dapeng (1991-), male, Ph.D. E-mail:

Published: 2023-05-20 doi: 10.14062/j.issn.0454-5648.20220823
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Calcium silicate hydrate (C-S-H) gel is a gene of cement-based cementitious materials, and its structural changes are crucial to the development of concrete macroscopic properties. To clarify the modification mechanism of cellulose nanocrystals (CNCs) in cement, C-S-H gels were prepared by a co-precipitation method, and the morphological and nucleation effects of CNCs on the microstructure of C-S-H gels were investigated by X-ray diffraction (XRD), transmission electron microscopy, nanoindentation, and nuclear magnetic resonance. The results show that the hydroxyl groups (—OH) on the surface of CNCs can complex Ca2+ ions, and then react with SiO42- ions in solution to form C-S-H gels that wraps around the CNCs. The CNCs can provide additional nucleation sites for the precipitation and growth of C-S-H gels, promote the reduction of the polymerization degree and the shortening of the chain length of the C-S-H gel, and increase the content of high-density C-S-H gel.

cellulose nanocrystals  /  calcium silicate hydrate  /  nucleation effect  /  microstructure  /  polymerization degree
郑大鹏, 方媛, 崔宏志. 纤维素纳米晶对水化硅酸钙微观结构的改性机理. 硅酸盐学报, 2023 , 51 (5) : 1146 -1153 . DOI: 10.14062/j.issn.0454-5648.20220823
Dapeng ZHENG, Yuan FANG, Hongzhi CUI. Modification of Cellulose Nanocrystals on Microstructure of Calcium Silicate Hydrate[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (5) : 1146 -1153 . DOI: 10.14062/j.issn.0454-5648.20220823
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Year 2023 volume 51 Issue 5
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Article Info
doi: 10.14062/j.issn.0454-5648.20220823
  • Receive Date：2022-09-30
  • Online Date：2026-10-20
  • Published：2023-05-20
Article Data
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History
  • Received：2022-09-30
  • Revised：2022-10-10
Funding
Affiliations
    College of Civil and Transportation Engineering, Key Laboratory for Resilient Infrastructures of Coastal Cities (MOE), Shenzhen University, Shenzhen 518060, Guangdong China

Corresponding:

CUI Hongzhi (1974-), male, Ph.D., Professor. E-mail:
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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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