Performance Evaluation of Concrete Containing Fatty Acids as a Medium of Thermal Energy Storage

This paper aims to study the influence of novel macro encapsulated phase change materials (PCMs) on the mechanical and thermal properties of concretes. Thermal energy storage aggregates (TESAs) were prepared using vacuum impregnation. The PCMs were a lauric-myristic acid (LA-MA) eutectic mixture and...

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Bibliographic Details
Published in:Journal of materials in civil engineering 2024-05, Vol.36 (5)
Main Authors: Jahangiri, Alireza, Forouhi, Nushin, Jamekhorshid, Ahmad, Farid, Mohammed Mehdi, Kamgar, Reza
Format: Article
Language:English
Subjects:
Coconut oil
Compressive strength
Concrete properties
Damping
Diatomaceous earth
Energy consumption
Energy storage
Fourier transforms
Gravel
Infrared analysis
Mechanical properties
Melt temperature
Mixtures
Performance evaluation
Phase change materials
Thermal energy
Thermodynamic properties
Thermogravimetric analysis
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Summary:This paper aims to study the influence of novel macro encapsulated phase change materials (PCMs) on the mechanical and thermal properties of concretes. Thermal energy storage aggregates (TESAs) were prepared using vacuum impregnation. The PCMs were a lauric-myristic acid (LA-MA) eutectic mixture and coconut oil, pure or mixed, and are impregnated in diatomite as a supporting material. Thermal energy storage concrete (TESC) was made by replacing gravel in ordinary concrete with TESAs. Thermal and mechanical properties of prepared TESC were studied using differential scanning calorimetry, thermogravimetric analysis, Fourier transform infrared spectroscopy, compressive strength, and thermal performance analysis. The results showed that the melting temperature of coconut oil and the eutectic mixture of LA-MA were 25.2°C and 34.5°C, respectively. TESC with 80 wt.% of gravel replaced with TESA had a compressive strength of higher than 17 MPa, which indicates its usability as structural concrete. The results of thermal performance analysis also revealed that prepared TESC had the capability of storing thermal energy and can reduce energy consumption by damping temperature fluctuations caused by the outside environment.
ISSN:0899-1561
1943-5533
DOI:10.1061/JMCEE7.MTENG-15773