Thermal Conductivity of Dry Sands Treated with Microbial-Induced Calcium Carbonate Precipitation
Joint Authors
Wang, Zhaoyu
Zhang, Nan
Lin, Fei
Ding, Jinhua
Yang, Huimin
Source
Advances in Materials Science and Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-03
Country of Publication
Egypt
No. of Pages
8
Abstract EN
With an increasing energy demand, exploration and utilization of new energy resources become more significant recently.
Geothermal energy, characterized as a clean, renewable, and sustainable energy, has various engineering applications.
Microbial-induced calcium carbonate precipitation (MICP) technique has a potential to improve soil thermal properties for geothermal applications.
In this study, thermal conductivity of dry sands treated using MICP technique with different treatment cycles was investigated in laboratory.
The results showed that thermal conductivity of MICP-treated sands was much higher than that of the untreated sand under dry condition and it increased with increasing treatment cycles.
Based on the scanning electron microscopy (SEM) analyses, it is found MICP-induced CaCO3 crystals are being formed among sand particles functioned as “thermal bridge,” which provided more highly effective heat transfer path.
It is concluded that the MICP technique could significantly improve the thermal conductivity of sands and the overall heat transfer efficiency.
It is advantageous to use MICP-treated soils as enhanced grout materials for underground energy geostructures.
American Psychological Association (APA)
Wang, Zhaoyu& Zhang, Nan& Lin, Fei& Ding, Jinhua& Yang, Huimin. 2019. Thermal Conductivity of Dry Sands Treated with Microbial-Induced Calcium Carbonate Precipitation. Advances in Materials Science and Engineering،Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1120095
Modern Language Association (MLA)
Wang, Zhaoyu…[et al.]. Thermal Conductivity of Dry Sands Treated with Microbial-Induced Calcium Carbonate Precipitation. Advances in Materials Science and Engineering No. 2019 (2019), pp.1-8.
https://search.emarefa.net/detail/BIM-1120095
American Medical Association (AMA)
Wang, Zhaoyu& Zhang, Nan& Lin, Fei& Ding, Jinhua& Yang, Huimin. Thermal Conductivity of Dry Sands Treated with Microbial-Induced Calcium Carbonate Precipitation. Advances in Materials Science and Engineering. 2019. Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1120095
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1120095