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Effect of Accelerated Carbonation Curing on Mechanical Property and Microstructure of High Volume Steel Slag Mortar
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Haima ZENG1, 2, Zhichao LIU1, 2, Fazhou WANG1, 2
Journal of the Chinese Ceramic Society | 2020, 48(11) : 1801 - 1807
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Journal of the Chinese Ceramic Society | 2020, 48(11): 1801-1807
• Research Articles •
Effect of Accelerated Carbonation Curing on Mechanical Property and Microstructure of High Volume Steel Slag Mortar
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Haima ZENG1, 2, Zhichao LIU1, 2, Fazhou WANG1, 2
Affiliations
  • 1.State Key Laboratory of Silicate Materials for Architectures, Wuhan 430070, China
  • 2.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

    • ZENG Haima (1996-), male, Master candidate. E-mail:

About Author:

ZENG Haima (1996-), male, Master candidate. E-mail:

Published: 2020-11-20 doi: 10.14062/j.issn.0454-5648.20200200
Outline
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A castable high-performance carbonatable concrete (HPCC) was designed based on the optimized packing design of the material system. In HPCC, a steel slag powder was the main binder, a small amount of hydraulic ordinary Portland cement was used to provide the mould-stripping strength and silica fume was added to improve the compactness of the system. Effect of carbonation curing on the mechanical properties and microstructure of HPCC was investigated. The results show that the compressive strength of HPCC after 1-d seal curing is 5.2 MPa, and the compressive strength of HPCC after pre-drying and 24-h carbonation curing reaches almost 90 MPa. A proper pre-drying is beneficial to the carbonation reaction, and the optimal moisture loss rate is 74.4%. Calcium carbonate crystals formed due to carbonation reaction are mainly calcite with a trace amount of aragonite. This leads to a further densification of the matrix, which accounts for the high strength of HPCC. In addition, the soundness of HPCC is also improved after carbonation.

steel slag  /  carbonation  /  high-performance carbonatable concrete  /  compressive strength  /  microstructure
曾海马, 刘志超, 王发洲. 碳化养护对大掺量钢渣砂浆的力学性能及显微结构的影响. 硅酸盐学报, 2020 , 48 (11) : 1801 -1807 . DOI: 10.14062/j.issn.0454-5648.20200200
Haima ZENG, Zhichao LIU, Fazhou WANG. Effect of Accelerated Carbonation Curing on Mechanical Property and Microstructure of High Volume Steel Slag Mortar[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (11) : 1801 -1807 . DOI: 10.14062/j.issn.0454-5648.20200200
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Year 2020 volume 48 Issue 11
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Article Info
doi: 10.14062/j.issn.0454-5648.20200200
  • Receive Date：2020-03-23
  • Online Date：2026-10-29
  • Published：2020-11-20
Article Data
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History
  • Received：2020-03-23
  • Revised：2020-04-18
Funding
Affiliations
    1.State Key Laboratory of Silicate Materials for Architectures, Wuhan 430070, China
    2.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

Corresponding:

LIU Zhichao (1983-), male, Ph.D., Professor. E-mail:
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Citations
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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