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Effect of Calcium Hexaluminate Aggregate Content on Mechanical Properties and Fracture Behavior of Corundum-Calcium Hexaluminate Castables
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Yichen CHEN, Liping PAN, Yawei LI, Ning LIAO, Yajie DAI
Journal of the Chinese Ceramic Society | 2022, 50(12) : 3293 - 3304
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Journal of the Chinese Ceramic Society | 2022, 50(12): 3293-3304
• Research Articles •
Effect of Calcium Hexaluminate Aggregate Content on Mechanical Properties and Fracture Behavior of Corundum-Calcium Hexaluminate Castables
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Yichen CHEN, Liping PAN, Yawei LI, Ning LIAO, Yajie DAI
Affiliations
  • Wuhan University of Science and Technology, The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan 430081, China

    • CHEN Yichen (1995-), male, Doctoral candidate. E-mail:

About Author:

CHEN Yichen (1995-), male, Doctoral candidate. E-mail:

Published: 2022-12-20 doi: 10.14062/j.issn.0454-5648.20220480
Outline
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Calcium aluminate cement bond reacts with matrix to form flake calcium hexaluminate phase at a high temperature, thus effectively improving the thermal shock resistance of the material. However, too much cement will produce a large volume expansion that affects the properties of the material. In this paper, calcium hexaluminate aggregate was used to partially or completely replace the tabular corundum aggregate to prepare castable, and the effect of aggregate porosity on the mechanical properties of castable after curing and high-temperature treatment was investigated, and the fracture behavior of castable was analyzed via wedge splitting experiment. The results show that at 25 ℃, compared with tabular corundum, water absorption and release effect of pores in calcium hexaluminate aggregate promote the formation of more hydration products around the aggregate, accelerate the hydration reaction of cement, and favor the interface meshing between aggregate and matrix. After heat-treatment at 1 600 ℃, the hydration product is transformed into a secondary phase CA6, which improves the interface strength of aggregate and matrix, and increases the proportion of crack propagation in aggregate during material fracture. The castable with 30%CA6 aggregate has an optimum crack propagation resistance.

corundum castables  /  calcium hexaluminate aggregate  /  porosity characteristics of aggregate  /  water absorption and release effect  /  wedge splitting experiment
陈怡琛, 潘丽萍, 李亚伟, 廖宁, 戴亚洁. 六铝酸钙骨料对刚玉-六铝酸钙质浇注料力学性能与断裂行为的影响. 硅酸盐学报, 2022 , 50 (12) : 3293 -3304 . DOI: 10.14062/j.issn.0454-5648.20220480
Yichen CHEN, Liping PAN, Yawei LI, Ning LIAO, Yajie DAI. Effect of Calcium Hexaluminate Aggregate Content on Mechanical Properties and Fracture Behavior of Corundum-Calcium Hexaluminate Castables[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (12) : 3293 -3304 . DOI: 10.14062/j.issn.0454-5648.20220480
Appendix
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Year 2022 volume 50 Issue 12
17
4
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Article Info
doi: 10.14062/j.issn.0454-5648.20220480
  • Receive Date：2022-06-15
  • Online Date：2026-10-20
  • Published：2022-12-20
Article Data
Affiliations
History
  • Received：2022-06-15
  • Revised：2022-07-12
Funding
Affiliations
    Wuhan University of Science and Technology, The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan 430081, China

Corresponding:

PAN Liping (1983-), female, Ph.D., Lecturer. 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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