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Effect of Cracking Ages on Self-Healing of Pure Fly Ash-Based Engineered Geopolymer Composite
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Guiyan XIONG1, Shuyue LI1, Xiaolu GUO1, 2
Journal of the Chinese Ceramic Society | 2022, 50(11) : 2868 - 2876
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Journal of the Chinese Ceramic Society | 2022, 50(11): 2868-2876
• Research Articles •
Effect of Cracking Ages on Self-Healing of Pure Fly Ash-Based Engineered Geopolymer Composite
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Guiyan XIONG1, Shuyue LI1, Xiaolu GUO1, 2
Affiliations
  • 1.School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
  • 2.Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 201804, China

    • XIONG Guiyan (1997-), female, Doctoral candidate. E-mail:

About Author:

XIONG Guiyan (1997-), female, Doctoral candidate. E-mail:

Published: 2022-11-20 doi: 10.14062/j.issn.0454-5648.20220196
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The effect of cracking ages (i.e., 3, 7, 14 d and 28 d) on the self-healing of pure fly ash-based engineered geopolymer composite (FA-EGC) was evaluated by crack characteristics, tensile properties and water absorption. The components and microstructure of self-healing products of FA-EGC were investigated by Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy with energy dispersive spectroscopy. The results show that there is an optimum self-healing effect of FA-EGC samples when cracking age is 7 d, a better recovery of ultimate tensile strength and a reduction in average water absorption rate can be obtained at the maximum decrease in crack width. The self-healing products of FA-EGC are the geopolymer gel generated by ongoing geopolymerization reaction and CaCO3.

engineered geopolymer composite  /  fly ash  /  cracking age  /  self-healing
熊归砚, 李舒玥, 郭晓潞. 开裂龄期对超高韧性纯粉煤灰基地聚合物自愈合性能的影响. 硅酸盐学报, 2022 , 50 (11) : 2868 -2876 . DOI: 10.14062/j.issn.0454-5648.20220196
Guiyan XIONG, Shuyue LI, Xiaolu GUO. Effect of Cracking Ages on Self-Healing of Pure Fly Ash-Based Engineered Geopolymer Composite[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (11) : 2868 -2876 . DOI: 10.14062/j.issn.0454-5648.20220196
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Year 2022 volume 50 Issue 11
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Article Info
doi: 10.14062/j.issn.0454-5648.20220196
  • Receive Date：2022-03-19
  • Online Date：2026-10-20
  • Published：2022-11-20
Article Data
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History
  • Received：2022-03-19
  • Revised：2022-04-07
Funding
Affiliations
    1.School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
    2.Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University, Shanghai 201804, China

Corresponding:

GUO Xiaolu (1980-), female, 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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