Current status and prospects of research on conductive concrete in cold regions
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School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu 610500, P. R. China

Clc Number:

TU528.59

Fund Project:

National Natural Science Foundation of China (No. 42101136); Natural Science Foundation of Sichuan Province (No. 2022NSFSC0429); China Postdoctoral Science Foundation (No. 2021M692697); Open Foundation of State Key Laboratory of Frozen Soil Engineering (No. SKLFSE202007); Sichuan Province Science and Technology Program (No. 2021YFQ0021)

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    Abstract:

    Snow and ice on roads, bridges and reservoir dam panels in cold regions seriously affect the performance of the project, and have a significant impact on the safe operation and maintenance of the project. The extensive use of de-icing materials, e.g., de-icing salt and snow melting agents, lead to serious environmental pollution. Conductive concrete, as an environmentally friendly and efficient snow/ice melting technology, plays an important role in ensuring the safe operation and maintenance of engineering, extending the service life of the project, and improving the service quality of engineering. At the same time, the use of conductive concrete as building materials in cold areas has indoor heating function, which can alleviate the energy shortage to some extent. This paper reviews the preparation process of commonly-used conductive concrete, analyses the mechanical-electrical-thermal properties of some kinds of conductive concrete, e.g., carbonaceous conductive concrete, metallic conductive concrete and complex-phase conductive concrete, and then researches the influence of conductive materials on the mechanical performance of conductive concrete (e.g., conductivity, frost resistance, and durability). Based on the above analysis, the research concepts of conductive concrete in cold regions are proposed considering the goals of high performance and low cost: 1) Recycling materials, such as recycled carbon fiber, should be widely used to develop multiphase conductive concrete; 2) Magnetic separation fly ash, slag, and silica fume are extensively used as admixtures in conductive concrete; 3) Investigating the heating and conductivity performances of conductive concrete under the low charging voltage; 4) Utilizing comprehensive clean energy (e.g., solar energy, wind energy, etc.) to generate electricity for conductive concrete; 5) Exploring the conductive concrete-geotechnical-environment feedback mechanism under complicated engineering environment.

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路建国,杨心莲,蒲万丽,万旭升,王寅栋,谭俐伶.寒区导电混凝土研究现状与展望[J].土木与环境工程学报(中英文),2025,47(2):162~173

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History
  • Received:November 21,2022
  • Revised:
  • Adopted:
  • Online: March 10,2025
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