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Microstructure and Mechanical Properties of Cement Mortar Containing Phase Change Materials

1
Department of Architectural Engineering, Chungnam National University, Daejeon 34134, Korea
2
Department of Convergence Systems Engineering, Chungnam National University, Daejeon 34134, Korea
3
Research Institute for Infrastructure Performance, Korea Infrastructure Safety Corporation, Gyeongsangnam 52856, Korea
4
Department of Architectural Engineering, Gachon University, Gyunggi 13120, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(5), 943; https://doi.org/10.3390/app9050943
Received: 1 February 2019 / Revised: 21 February 2019 / Accepted: 27 February 2019 / Published: 6 March 2019
(This article belongs to the Special Issue Advanced Applications of Phase Change Materials)
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Abstract

This paper presents an investigation of the characterization of cement mortar containing phase change materials (PCMs) in order to control the development of hydration heat. The study examined microstructural characteristics and properties of cement mortar with PCMs such as flow, compressive strength, and flexural strength. This research involved two types of PCM and up to 15% cement added to cement mortar mixtures. The two types of PCM used in this study are PCM with barium (PCM-Ba) and PCM with strontium (PCM-Sr). The experimental results indicate that both the incremental temperature rise and the maximum temperature release time of PCM up to 5% addition are delayed. Both PCM-Ba and PCM-Sr are effective in reducing the development of hydration heat. The microstructural analysis results show that the crystalloid content of cement mortar without PCMs is about 3% more from cement mortar with PCMs, regardless of the type of PCMs used, and that no significant difference is evident in the formation of crystals between cement mortar with and without PCMs. View Full-Text
Keywords: phase change material (PCM); hydration heat; mechanical properties; microstructure; crystalloid phase change material (PCM); hydration heat; mechanical properties; microstructure; crystalloid
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Yun, H.-D.; Lee, J.-W.; Jang, Y.-I.; Jang, S.-J.; Choi, W. Microstructure and Mechanical Properties of Cement Mortar Containing Phase Change Materials. Appl. Sci. 2019, 9, 943.

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