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Water Absorption and Microstructure Deterioration of Cement Paste Under Freeze-Thaw Environment
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Hongpan LI, Lin LIU, Yue WEI
Journal of the Chinese Ceramic Society | 2023, 51(5) : 1302 - 1310
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Journal of the Chinese Ceramic Society | 2023, 51(5): 1302-1310
• Research Articles •
Water Absorption and Microstructure Deterioration of Cement Paste Under Freeze-Thaw Environment
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Hongpan LI, Lin LIU, Yue WEI
Affiliations
  • College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China

    • LI Hongpan (1999-), male, Master candidate. E-mail:

About Author:

LI Hongpan (1999-), male, Master candidate. E-mail:

Published: 2023-05-20 doi: 10.14062/j.issn.0454-5648.20220777
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The failure mechanism and damage form of unsaturated cement-based materials are rather different under freeze-thaw environment. In this paper, the water absorption characteristics of unsaturated cement paste at different freezing temperatures were investigated in four freeze-thaw cycle regimes, i.e. -10 ℃-4 ℃, -20 ℃-4 ℃, -30 ℃-4 ℃ and -40 ℃-4 ℃. The single surface immersed unsaturated cement paste was subjected to 23 freeze-thaw cycles at -40 ℃. The microstructures of the samples at different heights from the water surface were analyzed. The results show that the water absorption of unsaturated cement paste can increase with the increase of the number of freeze-thaw cycles. The lower the freezing temperature is, the greater the water absorption will be, indicating the greater cold absorption. After the same number of freeze-thaw cycles, the closer the site to the water surface is, the larger the porosity and the greater the volume fraction of microcracks will be. The smaller the content of small pores is, the larger the content of large pores will be, that is, the closer the site to the water surface is, the more serious the freeze-thaw damage will be.

unsaturated cement paste  /  freeze-thaw cycle  /  water absorption  /  microstructure
李洪攀, 刘琳, 韦悦. 冻融环境下水泥净浆吸水性能和微结构劣化. 硅酸盐学报, 2023 , 51 (5) : 1302 -1310 . DOI: 10.14062/j.issn.0454-5648.20220777
Hongpan LI, Lin LIU, Yue WEI. Water Absorption and Microstructure Deterioration of Cement Paste Under Freeze-Thaw Environment[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (5) : 1302 -1310 . DOI: 10.14062/j.issn.0454-5648.20220777
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Year 2023 volume 51 Issue 5
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Article Info
doi: 10.14062/j.issn.0454-5648.20220777
  • Receive Date：2022-09-21
  • Online Date：2026-10-20
  • Published：2023-05-20
Article Data
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History
  • Received：2022-09-21
  • Revised：2022-10-04
Funding
Affiliations
    College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China

Corresponding:

LIU Lin (1983-), female, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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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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