Thermal Properties of Concrete in the Development of Precast Walls for Thermoelectricity Generation Utilizing Thermoelectric Principles

Jintara  Lawongkerd; Suppamit  Nuntawattananukul; Khemissara  Yodprasert; Punyatorn  Jangkrajang

doi:10.6180/jase.202608_31.005

Thermal Properties of Concrete in the Development of Precast Walls for Thermoelectricity Generation Utilizing Thermoelectric Principles

Jintara LawongkerdThis email address is being protected from spambots. You need JavaScript enabled to view it., Suppamit Nuntawattananukul, Khemissara Yodprasert, and Punyatorn Jangkrajang

Research Unit in Advanced Mechanics of Solids and Vibration, Department of Civil Engineering, Faculty of Engineering, Thammasat School of Engineering, Thammasat University, Pathum Thani, Thailand

Received: October 4, 2025
Accepted: December 29, 2025
Publication Date: February 1, 2026

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202608_31.005

This study aims to develop a concrete model for prefabricated walls intended for future thermoelectric power generation. Three-layer composite concrete samples were fabricated to achieve the maximum temperature difference between layers. These samples can be applied to the thermoelectric principle, generating electricity by converting heat energy from the temperature difference occurring at two points between the concrete layers. The concrete layers were fabricated by replacing 10% of Portland cement with bagasse ash and 5% of sand with graphite powder. The samples were then subjected to heat absorption tests over time to measure temperature differences. The results suggest that the three-layer composite concrete samples consisting of graphite powder bagasse ash-graphite powder (G-B-G) achieved a temperature difference 1.59 times greater than that of Portland cement concrete samples. This finding indicates the potential for higher thermoelectricity generation compared to Portland cement concrete, while also reducing electricity use, and improving heat insulation in buildings. In addition, the mechanical properties were tested by measuring the compressive strength and flexural strength of the concrete samples to assess their practical suitability.

Keywords: Thermoelectric; Three-layer composite concrete; Bagasse ash; Graphite

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