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Mechanism and Properties of Glacial Acetic Acid Modified Steel Slag Powder via Dry Chemical Modification Method
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Binbin HUO1, Baoliang LI1, 2, Chun CHEN1, Yamei ZHANG1
Journal of the Chinese Ceramic Society | 2021, 49(5) : 948 - 954
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Journal of the Chinese Ceramic Society | 2021, 49(5): 948-954
• Research Article •
Mechanism and Properties of Glacial Acetic Acid Modified Steel Slag Powder via Dry Chemical Modification Method
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Binbin HUO1, Baoliang LI1, 2, Chun CHEN1, Yamei ZHANG1
Affiliations
  • 1.Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing, China, 211189
  • 2.Faculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huaian 223001, Jiangsu, China

    • HUO Binbin (1991-), male, Doctoral candidate. E-mail:

About Author:

HUO Binbin (1991-), male, Doctoral candidate. E-mail:

Published: 2021-05-20 doi: 10.14062/j.issn.0454-5648.20200452
Outline
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To activate the early-age hydraulic reactivity of steel slag powder (SS), a method of using glacial acetic acid (GA)-anhydrous alcohol solution to modify the SS via dry chemical modification technology was proposed. The mineral composition, surface morphology and specific surface area of unmodified SS and GA modified SS were investigated by X-ray diffraction, Fourier transform infrared, scanning electron microscopy and Brunauer-Emmett-Teller specific surface area analysis. The hydraulic reactivity, compressive strength and soundness of SS pastes and SS blended cement pastes were investigated. The results show that calcite, portlandite and dicalcium ferrite in SS react with GA to produce calcium acetate after GA modification and some pores in the modified process, thus leading to GA modified SS with the greater specific surface area and rougher surface, compared to unmodified SS. In the hydration process, water is easier to absorb onto the surface of modified SS and enters the inner of SS particles along the pores, resulting in higher dissolution heat and reaction heat of active minerals in SS. The result show that, the higher 72-h cumulative hydration heat, the 3 d, 7 d and 90 d compressive strengths and better soundness of GA modified SS pastes and GA modified SS blended cement pastes are obtained, compared to the unmodified pastes.

steel slag powder  /  glacial acetic acid  /  dry chemical modification  /  hydration  /  mineral composition  /  surface morphology
霍彬彬, 李保亮, 陈春, 张亚梅. 冰乙酸干法化学改性钢渣粉机理及其性能. 硅酸盐学报, 2021 , 49 (5) : 948 -954 . DOI: 10.14062/j.issn.0454-5648.20200452
Binbin HUO, Baoliang LI, Chun CHEN, Yamei ZHANG. Mechanism and Properties of Glacial Acetic Acid Modified Steel Slag Powder via Dry Chemical Modification Method[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (5) : 948 -954 . DOI: 10.14062/j.issn.0454-5648.20200452
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Year 2021 volume 49 Issue 5
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Article Info
doi: 10.14062/j.issn.0454-5648.20200452
  • Receive Date：2020-06-22
  • Online Date：2026-10-30
  • Published：2021-05-20
Article Data
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History
  • Received：2020-06-22
  • Revised：2020-07-17
Funding
Affiliations
    1.Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing, China, 211189
    2.Faculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huaian 223001, Jiangsu, China

Corresponding:

ZHANG Yamei (1968-), 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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