TY - JOUR
T1 - Thermal and structural performance of geopolymer concrete containing phase change material encapsulated in expanded clay
AU - Hassan, Ahmed
AU - Mourad, Abdel Hamid I.
AU - Rashid, Yasir
AU - Ismail, Najif
AU - Laghari, Mohammad Shakeel
N1 - Funding Information:
The authors would like to express their appreciation to United Arab Emirates University ( UAEU ) for their funding of this research through the Program for Advanced Research ( 31N204-UPAR-5-2014 ), as well as the Faculty of Engineering at UAE University for facilitating the experiments.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/5/15
Y1 - 2019/5/15
N2 - In this paper, novel geopolymer-coated expanded clay-phase change material (GP-L-PCM) macrocapsules added to geopolymer concrete (GPC) with volume ratios of 25%, 50%, and 75% for the production of GP-L-PCM slabs are described. The same amounts of lightweight expanded clay aggregate (LECA) were used to develop LECA slabs. The thermal and structural performances of LECA and GP-L-PCM slabs were compared with a reference GPC slab. It was observed that LECA and GP-L-PCM slabs exhibit lower heat transmission, represented by lower maximum surface temperatures (a decrease of 5.6 °C and 8.0 °C on the back surface) than that of GPC slab. Accordingly, the LECA and GP-L-PCM slabs exhibit U-values of 1.6 and 0.9 W/m 2 K, respectively, with 75% addition of LECA and GP-L-PCM capsules compared to 2 W/m 2 K for GPC. Substantial decrease in compressive strength was observed in the LECA and GP-L-PCM slabs as compared to GPC for all tested samples.
AB - In this paper, novel geopolymer-coated expanded clay-phase change material (GP-L-PCM) macrocapsules added to geopolymer concrete (GPC) with volume ratios of 25%, 50%, and 75% for the production of GP-L-PCM slabs are described. The same amounts of lightweight expanded clay aggregate (LECA) were used to develop LECA slabs. The thermal and structural performances of LECA and GP-L-PCM slabs were compared with a reference GPC slab. It was observed that LECA and GP-L-PCM slabs exhibit lower heat transmission, represented by lower maximum surface temperatures (a decrease of 5.6 °C and 8.0 °C on the back surface) than that of GPC slab. Accordingly, the LECA and GP-L-PCM slabs exhibit U-values of 1.6 and 0.9 W/m 2 K, respectively, with 75% addition of LECA and GP-L-PCM capsules compared to 2 W/m 2 K for GPC. Substantial decrease in compressive strength was observed in the LECA and GP-L-PCM slabs as compared to GPC for all tested samples.
KW - Compressive strength
KW - Expanded clay
KW - Geopolymer concrete
KW - Phase change material
KW - Thermal performance
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U2 - 10.1016/j.enbuild.2019.03.005
DO - 10.1016/j.enbuild.2019.03.005
M3 - Article
AN - SCOPUS:85062850086
SN - 0378-7788
VL - 191
SP - 72
EP - 81
JO - Energy and Buildings
JF - Energy and Buildings
ER -