@article{b7471e0d36b441c7a72b2d7ebbdc4e82,
title = "Effects of cyclic heating and water cooling on the physical characteristics of granite",
abstract = "This paper aims to study the effect of cyclic heating and flowing-water cooling conditions on the physical properties of granite. Ultrasonic tests, gas measured porosity, permeability, and microscope observations were conducted on granite after thermal treatment. The results showed that the velocity of P- and S-waves decreased as the number of thermal cycles increased. The porosity increased with the number of the thermal cycles attained at 600 °C, while no apparent changes were observed at 200 and 400 °C. The permeability increased with the increasing number of thermal cycles. Furthermore, microscope observations showed that degradation of the granite after thermal treatment was attributed to a large network of microcracks induced by thermal stress. As the number of thermal cycles increased, the number of transgranular microcracks gradually increased, as well as their length and width. The quantification of microcracks from cast thin section (CTS) images supported the visual observation.",
author = "Xiangchao Shi and Leiyu Gao and Jie Wu and Cheng Zhu and Shuai Chen and Xiao Zhuo",
note = "Funding Information: This research was funded by the National Science Foundation of China, grant number 51774428, and Sichuan International Science and Technology Innovation Cooperation/Hong Kong, Macao and the Taiwan Science and Technology Innovation Cooperation, grant number 2019YFH0166, and the National Students' Innovation and Entrepreneurship Training Program of China, grant number 20180615013. Conflicts of Interest: The authors declare no conflict of interest Funding Information: Author Contributions: Conceptualization, X.S. and C.Z.; data curation, J.W. and L.G.; formal analysis, L.G. and S.C.; supervision, C.Z. and L.G.; validation, X.Z. and X.S.; writing—original draft, L.G., X.Z. and X.S. All authors haFvuenredaindga: nTdhiasg rreeseedartcoht hweaps ufubnlidsehde dbyv etrhsei oNnatoifotnhael Smciaennucesc Frioputn. dation of China, grant number 51774428, and Sichuan International Science and Technology Innovation Cooperation/Hong Kong, Macao and the Taiwan Funding: This research was funded by the National Science Foundation of China, grant number 51774428, Science and Technology Innovation Cooperation, grant number 2019YFH0166, and the National Students{\textquoteright} Science and Technology Innovation Cooperation, grant number 2019YFH0166, and the National Students{\textquoteright} Innovation and Entrepreneurship Training Program of China, grant number 20180615013. Conflicts of Interest: The authors declare no conflict of interest. Conflicts of Interest: The authors declare no conflict of interest. References References 1. Huang, W.; Cao, W.; Jiang, F.Anovelsingle-wellgeothermalsystemforhotdryrockgeothermalenergy 1. Huang, W.; Cao, W.; Jiang, F. A novel single-well geothermal system for hot dry rock geothermal energy 2. Breede, K.; Dzebisashvili, K.; Liu, X.; Falcone, G. A systematic review of enhanced (or engineered) Publisher Copyright: {\textcopyright} 2020 by the authors. Licensee MDPI, Basel, Switzerland.",
year = "2020",
month = may,
day = "1",
doi = "10.3390/en13092136",
language = "English (US)",
volume = "13",
journal = "Energies",
issn = "1996-1073",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "9",
}