Mineral Type Impact on Thermal Conductivity of Biocement and Biocemented Sand

Shadi Zeinali; Zarghaam Heidar Rizvi; Frank Wuttke

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arXiv · 2510.18500

Mineral Type Impact on Thermal Conductivity of Biocement and Biocemented Sand

Shadi Zeinali·Zarghaam Heidar Rizvi·Frank Wuttke

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Abstract

This study experimentally investigates the influence of CaCO3 polymorphs on the thermal conductivity (TC) of biocement and biocemented sand. Calcite-rich biocements consistently showed higher TC than vaterite-dominated ones, regardless of density or saturation. Vaterite-rich biocement, resulting from rapid precipitation and elevated organic content, yields inherently lower TC. This study shed light on the limited TC improvement observed in vaterite-rich biocemented sand.

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Shadi Zeinali, Zarghaam Heidar Rizvi, Frank Wuttke. 2025-10-21. Mineral Type Impact on Thermal Conductivity of Biocement and Biocemented Sand. https://arxiv.org/abs/2510.18500

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