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Quantification of Damage in Concrete Under Drying Condition
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Peng GAO1, Yang CHEN1, 2, Haoliang HUANG1, 3, Jiangxiong WEI1, 3, Qijun YU1, 3
Journal of the Chinese Ceramic Society | 2021, 49(2) : 312 - 322
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Journal of the Chinese Ceramic Society | 2021, 49(2): 312-322
• Research Article •
Quantification of Damage in Concrete Under Drying Condition
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Peng GAO1, Yang CHEN1, 2, Haoliang HUANG1, 3, Jiangxiong WEI1, 3, Qijun YU1, 3
Affiliations
  • 1.School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
  • 2.Guangdong Provincial Academy of Building Research Group Co., Ltd., Guangzhou 510500, China
  • 3.Guangdong Low Carbon Technologies Engineering Centre for Building Materials, Guangzhou 510640, China

    • GAO Peng (1986-), male, Ph.D., Assistant Researcher. E-mail:

About Author:

GAO Peng (1986-), male, Ph.D., Assistant Researcher. E-mail:

Published: 2021-02-20 doi: 10.14062/j.issn.0454-5648.20200310
Outline
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The non-uniform deformations of C50 concrete under drying at different relative humidities (i.e., 73%, 55% and 40%) from 1 d to 60 d were determined by a digital image correlation (DIC) technique. The equivalent tensile strains ɛ̃ in concrete were calculated based on the meso-scale damage model of concrete, which were used to identify the damage distribution in concrete. The results show that the mortar phase surrounding the coarse aggregates has great tensile strains, thus readily occurring damage and micro-cracks. The damage index (Dɛ̃) calculated from the value and distribution of ɛ̃ was used to quantify the drying-induced damage in concrete. The Dɛ̃ of the concretes under drying at 55% and 40% relative humidities increases to 101 μm/m and 135 μm/m, respectively, indicating that the drying conditions with ≤55% relative humidity could cause damage and micro-cracks.

drying shrinkage  /  microcracks  /  damage  /  digital image correlation  /  non-uniform deformation
高鹏, 陈阳, 黄浩良, 韦江雄, 余其俊. 干燥环境下混凝土内部损伤的量化. 硅酸盐学报, 2021 , 49 (2) : 312 -322 . DOI: 10.14062/j.issn.0454-5648.20200310
Peng GAO, Yang CHEN, Haoliang HUANG, Jiangxiong WEI, Qijun YU. Quantification of Damage in Concrete Under Drying Condition[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (2) : 312 -322 . DOI: 10.14062/j.issn.0454-5648.20200310
Appendix
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Year 2021 volume 49 Issue 2
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Article Info
doi: 10.14062/j.issn.0454-5648.20200310
  • Receive Date：2020-04-30
  • Online Date：2026-10-30
  • Published：2021-02-20
Article Data
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History
  • Received：2020-04-30
  • Revised：2020-05-31
Funding
Affiliations
    1.School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
    2.Guangdong Provincial Academy of Building Research Group Co., Ltd., Guangzhou 510500, China
    3.Guangdong Low Carbon Technologies Engineering Centre for Building Materials, Guangzhou 510640, China

Corresponding:

WEI Jiangxiong (1977-), male, 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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Number of
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Number of
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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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