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Pores Evolution and Characterization of Hardened Cement Mortar with Different Water/Cement Ratios under Capillary Suction of Deicing Solution Freeze-thaw Action
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Jiawei HAN1, Chencheng YAN1, 2, Wulong HU1, Sirong ZHU1, Shilin YAN1
Journal of the Chinese Ceramic Society | 2020, 48(11) : 1842 - 1851
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Journal of the Chinese Ceramic Society | 2020, 48(11): 1842-1851
• Research Articles •
Pores Evolution and Characterization of Hardened Cement Mortar with Different Water/Cement Ratios under Capillary Suction of Deicing Solution Freeze-thaw Action
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Jiawei HAN1, Chencheng YAN1, 2, Wulong HU1, Sirong ZHU1, Shilin YAN1
Affiliations
  • 1.Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, School of Science, Wuhan University of Technology, Wuhan 430070, China
  • 2.Shanghai Electric Wind Power Group, Shanghai 200241, China

    • HAN Jiawei (2001-), male, Undergraduate. E-mail:

About Author:

HAN Jiawei (2001-), male, Undergraduate. E-mail:

Published: 2020-11-20 doi: 10.14062/j.issn.0454-5648.20200151
Outline
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The hardened cement mortar samples with different water-cement ratios were prepared and subjected to salt freezing experiment (CDF freeze-thaw). The microscopic images and three-dimensional pore structure of hardened cement mortar with different freeze-thaw cycles were investigated by X-ray tomography. The evolution process and mechanism of meso-structure in freezing-thawing cycle were analyzed. The variation law of pore parameters of hardened cement mortar under the action of CDF freeze-thaw cycle and the influence of water-cement ratio on the freeze-resistance of mortar sample were investigated. The results show that the freezing-thawing microcracks develop along the porous interface between cement aggregate and fine aggregate, and the reduction of water-cement ratio can reduce the interfacial porosity, thus improving the frost resistance of cement-based materials. The cement mortar with a water-cement ratio of 0.30 has a stronger frost resistance. The freeze-thaw damage evolution and crushing process of cement mortar can be characterized by fractal dimension curve.

freeze-thaw cycle  /  pore evolution  /  water-cement ratio  /  computed tomography  /  fractal dimension
韩家伟, 严辰成, 胡五龙, 朱四荣, 晏石林. 盐冻条件下不同水灰比硬化水泥砂浆的孔隙演化及表征. 硅酸盐学报, 2020 , 48 (11) : 1842 -1851 . DOI: 10.14062/j.issn.0454-5648.20200151
Jiawei HAN, Chencheng YAN, Wulong HU, Sirong ZHU, Shilin YAN. Pores Evolution and Characterization of Hardened Cement Mortar with Different Water/Cement Ratios under Capillary Suction of Deicing Solution Freeze-thaw Action[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (11) : 1842 -1851 . DOI: 10.14062/j.issn.0454-5648.20200151
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Year 2020 volume 48 Issue 11
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Article Info
doi: 10.14062/j.issn.0454-5648.20200151
  • Receive Date：2020-03-07
  • Online Date：2026-10-29
  • Published：2020-11-20
Article Data
Affiliations
History
  • Received：2020-03-07
  • Revised：2020-05-05
Funding
Affiliations
    1.Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, School of Science, Wuhan University of Technology, Wuhan 430070, China
    2.Shanghai Electric Wind Power Group, Shanghai 200241, China

Corresponding:

HU Wulong (1986-), male, Ph.D., Associated 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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