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Effect of Phase Transition Temperatures of the Phase Change Material on Hydration and Mechanical Properties of Cement Paste
RISE Research Institutes of Sweden, Built Environment, Infrastructure and concrete technology.ORCID iD: 0000-0002-4182-5653
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
RISE Research Institutes of Sweden.
2021 (English)In: Proc of INTERNATIONAL CONFERENCE ON“CEMENT - BASED MATERIALS TAILORED FOR A SUSTAINABLE FUTURE, 2021, p. 85-93Conference paper, Published paper (Refereed)
Abstract [en]

In recent years, the use of Phase Change Materials (PCMs) in cementitious materials have become of vital importance due to their ability to absorb and release the heat and promote thermal comfort in building applications, which is a requirement for saving energy and sustainable infrastructure. The presented study aimed at investigating the PCMs of different phase transition temperatures in cementitious system and their influence on hydration and mechanical properties of the system. In this study, three PCMs with different phase transition temperatures (24 °C, 29 °C and 58 °C) were incorporated into cement paste at various dosages. The mechanical and rheological properties of the cement pastes were evaluated using compressive strength, density, and slump flow measurement methods. In addition, isothermal calorimetry and semi-adiabatic calorimetry measurements were used to elucidate hydration attributes of the cement paste. The results reveal that both the phase transition temperature of PCM and its amount have a crucial effect on the properties of the cement-based material. Especially, the high phase transition temperature (58 °C) PCM has enhanced the heat of hydration and stabilized the temperature during the cement hydration, that resulted in higher compressive strength of the cementitious system. Whereas ambient phase transition temperature (24 °C and 29 °C) PCMs have negatively influenced the rate of strength development of the cementitious system. The slow rate of strength development was found to be attributed to reduction in heat of hydration, which was confirmed through the calorimetry studies.

Place, publisher, year, edition, pages
2021. p. 85-93
Keywords [en]
phase change material, cement hydration, Portland cement, concrete, energy storage
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:ri:diva-57527OAI: oai:DiVA.org:ri-57527DiVA, id: diva2:1625028
Conference
INTERNATIONAL CONFERENCE ON “CEMENT - BASED MATERIALS TAILORED FOR A SUSTAINABLE FUTURE" IN HONOUR OF PROF. SURENDRA P. SHAH AND PROF. TURAN ÖZTURAN May 27-29, 2021 • ISTANBUL / TURKEY
Available from: 2022-01-05 Created: 2022-01-05 Last updated: 2023-06-02Bibliographically approved

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Arun Chaudhari, Ojas

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CiteExportLink to record
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