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Title |
Effect of Phase Change Material on Hydration Heat of Mortar with Fly Ash and Blast Furnace Slag
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Authors |
남의현(Yi-Hyun Nam) ; 장석준(Seok-Joon Jang) ; 김선웅(Sun-Woong Kim) ; 박완신(Wan-Shin Park) ; 윤현도(Hyun-Do Yun) |
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DOI |
https://doi.org/10.11112/jksmi.2019.23.1.1 |
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Keywords |
상전이물질 ; 수화열 ; 역학적 특성 ; 플라이애시 ; 고로슬래그 Phase change material(PCM) ; Hydration heat ; Mechanical properties ; Fly ash ; Blast furnace slag |
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Abstract |
Phase change material(PCM) has the capacity to absorb or release energy in heat when the phase changes. This study conducted to investigate the effect of strontium-based PCM on the hydration heat and mechanical properties of mortar with fly ash and blast furnace slag. The amounts of PCM were 1%, 2%, 3%, 4%, and 5% by the cementitious materials weight. The tests about mortar flow, semi-adiabatic temperature rise, compressive and flexural strength tests were carried out for twelve types of mortar mixtures. The test results indicated that the use of PCM was effective to reduce hydration heat and retard hydration of mortar with industrial by-products. In particular, the heat generation rate of mortars with fly ash was lower than that of mortars with blast furnace slag. The compressive strength of mortar with fly ash and blast furnace slag were decreased with increasing PCM ratio.
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