Preparation and properties of porous ceramic aggregates using electrical insulators waste |
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| Affiliation: | 1. The State Key Laboratory of Refractories and Metallurgy, Department of Materials Science and Engineering, Wuhan University of Science and Technology (WUST), Wuhan, 430081, PR China;2. Anhui Ruital New Material Technology Co., Ltd., Hefei 242300, PR China;1. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi׳an Jiaotong University, Xi׳an 710049, PR China;2. Multi-Disciplinary Materials Research Center, Frontier Institute of Science and Technology, Xi׳an Jiaotong University, Xi׳an, PR China;1. Department of Energy and Resources Engineering, College of Engineering, Peking University, 100871 Beijing, PR China;2. School of Civil and Resource Engineering, University of Science and Technology Beijing, 100083 Beijing, PR China;1. School of Physical Science and Technology, Southwest Jiaotong University, Chengdu, 610031, People''s Republic of China;2. Superconductivity and New Energy R&D Center, Southwest Jiaotong University, Chengdu, 610031, People''s Republic of China;3. Southwestern Institute of Physics, Chengdu, 610031, People''s Republic of China;4. College of Physics and Energy, Fujian Normal University, Fuzhou, 350117, People''s Republic of China;5. Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fujian Normal University, Fuzhou, 350117, People''s Republic of China;1. Institute of Chemical Technology, Prague (ICT Prague), Department of Glass and Ceramics, Technická 5, 166 28 Prague 6, Czech Republic;2. Institute of Rock Structure and Mechanics, Academy of Sciences of the Czech Republic (ASCR), V Holešovičkách 41, 182 09 Prague 8, Czech Republic;1. School of Civil Engineering, Tianjin University, Tianjin 300072, China;2. Shanghai Tunnel Engineering Co., Ltd., Shanghai 200032, China;3. China Construction Fifth Engineering Division Co., Ltd., Changsha, Hunan 410000, China |
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| Abstract: | In this paper, porous ceramic aggregates were prepared by electrical insulators waste (EIW). Effects of sintering temperature and content of EIW on the aggregates’ properties such as bulk density, and apparent porosity, total porosity, and cold crushing strength were investigated. With increasing sintering temperature and content of EIW, bulk density and cold crushing strength of the aggregates increased, apparent porosity and total porosity decreased. Based on these results, total porosity of specimens in group B sintered at 1200 °C is 62.0%, cold crushing strength is 35.3 N, and thermal conductivity is 0.165 W/(m K) at 300 °C. Comprehensive properties of specimens can be optimized by adjusting sintering temperature. Meanwhile, strength variation resulted from the combined effects of phase transformation and matrix densification under different sintering temperatures. |
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| Keywords: | Electrical insulators waste Aggregates Properties Microstructures |
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