Multi-scale study of high-strength low-thermal-conductivity cement composites containing cenospheres

Vanessa Rheinheimer, Yunpeng Wu, Tao Wu, Kemal Celik, Junyan Wang, Laura De Lorenzis, Peter Wriggers, Min Hong Zhang, Paulo J.M. Monteiro

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish (US)
Pages (from-to)91-103
Number of pages13
JournalCement and Concrete Composites
Volume80
DOIs
StatePublished - Jul 1 2017

Keywords

  • Cement composites
  • Cenospheres
  • Multiscale
  • Thermal conductivity

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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    Rheinheimer, V., Wu, Y., Wu, T., Celik, K., Wang, J., De Lorenzis, L., Wriggers, P., Zhang, M. H., & Monteiro, P. J. M. (2017). Multi-scale study of high-strength low-thermal-conductivity cement composites containing cenospheres. Cement and Concrete Composites, 80, 91-103. https://doi.org/10.1016/j.cemconcomp.2017.03.002