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Application of Microorganisms to Improve Hydrophobic Properties of Mortar and Its Mechanisms
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Jianyun WANG1, Yiyun KE1, Jianfeng WEN2, Kai CUI3, Qiang YUAN4
Journal of the Chinese Ceramic Society | 2023, 51(5) : 1165 - 1173
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Journal of the Chinese Ceramic Society | 2023, 51(5): 1165-1173
• Research Articles •
Application of Microorganisms to Improve Hydrophobic Properties of Mortar and Its Mechanisms
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Jianyun WANG1, Yiyun KE1, Jianfeng WEN2, Kai CUI3, Qiang YUAN4
Affiliations
  • 1.School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
  • 2.Anhui China Railway Engineering Materials Technology Co.Ltd, Hefei 230041, China
  • 3.School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
  • 4.School of Civil Engineering, Central South University, Changsha 410083, China

    • WANG Jianyun (1983-), female, Ph.D., Professor. E-mail:

About Author:

WANG Jianyun (1983-), female, Ph.D., Professor. E-mail:

Published: 2023-05-20 doi: 10.14062/j.issn.0454-5648.20221031
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Cement-based materials are highly hydrophilic, and aggressive substances in service environment often penetrate into the cement-based materials through the transmission of water, resulting in corrosion of steel bars, carbonization of concrete, and other hazards. In this paper, two types of microbe cells were applied to improve the hydrophobic properties of the mortar specimens. The results show that the contact angle of the mortar specimens increases to 122.7° and 112.1° after the addition of Starmerella bombicola CCRC22302 and Bacillus sphaericus LMG22257, respectively. The diffusion rate and absorption rate of water on the fracture surface are obviously slowed down. The capillary water absorption is decreased by 39% in the groups added with 2.5% (in mass) Starmerella bombicola by mass of cement. The bacterial cell improves the hydrophobicity through the combined action of the rough structure and its hydrophobicity. However, it is indicated that the flexural and compressive strengths of the mortar specimens are significantly decreased, thus becoming a challenge for the practical application.

microorganisms pellets  /  contact angle  /  capillary water absorption  /  flowability  /  pore properties
王剑云, 柯懿耘, 温建峰, 崔凯, 元强. 微生物菌体对砂浆疏水性能的提升及机理分析. 硅酸盐学报, 2023 , 51 (5) : 1165 -1173 . DOI: 10.14062/j.issn.0454-5648.20221031
Jianyun WANG, Yiyun KE, Jianfeng WEN, Kai CUI, Qiang YUAN. Application of Microorganisms to Improve Hydrophobic Properties of Mortar and Its Mechanisms[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (5) : 1165 -1173 . DOI: 10.14062/j.issn.0454-5648.20221031
Appendix
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Year 2023 volume 51 Issue 5
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Article Info
doi: 10.14062/j.issn.0454-5648.20221031
  • Receive Date：2022-11-29
  • Online Date：2026-10-20
  • Published：2023-05-20
Article Data
Affiliations
History
  • Received：2022-11-29
  • Revised：2023-01-02
Funding
Affiliations
    1.School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
    2.Anhui China Railway Engineering Materials Technology Co.Ltd, Hefei 230041, China
    3.School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
    4.School of Civil Engineering, Central South University, Changsha 410083, China

Corresponding:

YUAN Qiang (1981-), 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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