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A platform for research: civil engineering, architecture and urbanism
Thermo-Mechanical Behavior of Reinforced Concretes for Energy Piles
Abstract Energy pile is a ground source heat pump technology that couples foundation pile with ground heat exchangers for geothermal energy exploitation. However, the thermally induced contraction and expansion of the concrete affect the heat transfer performance and sustainable operation of the energy piles. In order to minimize these effects, a set of concrete samples was tested by deploying heating-recovery-cooling-recovery cycle. Three different concrete samples including plain concrete, polypropylene reinforced and steel fiber reinforced concretes are prepared. Temperature and stain development of the concrete samples were continuously recorded during the testing process. The results show that heating expansion and cooling contraction are both reduced for steel fiber reinforced concrete. For polypropylene fiber reinforced concretes, only the heating expansion is reduced but the contraction is larger than the plain concrete. Finally, the content of steel fiber of 1.3% is optimized to minimize the thermally induced mechanical effects on steel fiber reinforced concrete for energy piles.
Thermo-Mechanical Behavior of Reinforced Concretes for Energy Piles
Abstract Energy pile is a ground source heat pump technology that couples foundation pile with ground heat exchangers for geothermal energy exploitation. However, the thermally induced contraction and expansion of the concrete affect the heat transfer performance and sustainable operation of the energy piles. In order to minimize these effects, a set of concrete samples was tested by deploying heating-recovery-cooling-recovery cycle. Three different concrete samples including plain concrete, polypropylene reinforced and steel fiber reinforced concretes are prepared. Temperature and stain development of the concrete samples were continuously recorded during the testing process. The results show that heating expansion and cooling contraction are both reduced for steel fiber reinforced concrete. For polypropylene fiber reinforced concretes, only the heating expansion is reduced but the contraction is larger than the plain concrete. Finally, the content of steel fiber of 1.3% is optimized to minimize the thermally induced mechanical effects on steel fiber reinforced concrete for energy piles.
Thermo-Mechanical Behavior of Reinforced Concretes for Energy Piles
Huang, Wei (author) / Xiang, Wei (author) / Luo, Jin (author)
2018-01-01
5 pages
Article/Chapter (Book)
Electronic Resource
English
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