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
    Publication statusPublished - Jul 1 2017

      Fingerprint

    Keywords

    • Cement composites
    • Cenospheres
    • Multiscale
    • Thermal conductivity

    ASJC Scopus subject areas

    • Building and Construction
    • Materials Science(all)

    Cite this