Journal
CEMENT & CONCRETE COMPOSITES
Volume 80, Issue -, Pages 91-103Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2017.03.002
Keywords
Thermal conductivity; Cement composites; Cenospheres; Multiscale
Funding
- Republic of Singapore's National Research Foundation
- Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
- European Research Council under the European Union's Seventh Framework Programme (FP7/ERC) [N.279439]
- German Project DFG [GRK-2075]
- Open Fund Project from State Key Laboratory of Structural Analysis for Industrial Equipment in Dalian University of Technology [N. GZ15211]
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Cenosphere particles are hollow, but due to their hard shells, they can be used in cementitious composites to produce ultra-lightweight cement composites (ULCC) with high strength and low thermal conductivity. This study integrates thermal conductivity with mechanical experimental research, microscopic investigation, and numerical simulations to provide new insights into the behavior of these advanced composites. The microstructure of ULCC samples was characterized using synchrotron high resolution microtomography, transmission electron microscopy and scanning electron microscopy. Composite models were used to predict the thermal conductivity of the cenospheres based on the experimental results of ULCC thermal conductivity and the porosity of the samples. (C) 2017 Elsevier Ltd. All rights reserved.
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