Thermal conductivity of cement paste: Influence of macro-porosity

PK Sarkar and N Mitra, CEMENT AND CONCRETE RESEARCH, 143, 106385 (2021).

DOI: 10.1016/j.cemconres.2021.106385

Thermal conductivity of cement paste is significantly influenced by the presence of macro-pores within it. These pores (pores with size greater than 6 mu m, measured using microCT) which may be filled with air and/or water significantly alters the thermal conductivity of the resulting material. A combination of experiments, molecular dynamic investigations of major constituents of the cement paste, multiscale homogenization techniques, and inclusion of thermal conductivity of the pores containing either air or water has been utilized in this study to reveal the influence of pores in the calculation of thermal conductivity of the composite material.

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