Thermal Performance Study of a Cement-Based Mortar Incorporating EPS Beads

被引:7
作者
Horma, Othmane [1 ]
Charai, Mouatassim [1 ,2 ,3 ]
El Hassani, Sara [1 ]
El Hammouti, Aboubakr [1 ,2 ]
Moussaoui, Mohammed A. [1 ]
Mezrhab, Ahmed [1 ]
机构
[1] Mohamed Premier Univ, LME Lab, Oujda, Morocco
[2] Univ Paris Est Creteil, CERTES, Creteil, France
[3] Green Energy Pk IRESEN, UM6P, Benguerir, Morocco
关键词
green building material; waste recycling; expanded polystyrene; passive energy savings; thermal insulation; EXPANDED POLYSTYRENE;
D O I
10.3389/fbuil.2022.882942
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Recycling plastic waste has been one of the most significant challenges in the recent decade. The reuse of one of the most produced cellular plastics (i.e. EPS) within a conventional construction binder can contribute, simultaneously, to waste elimination and improving energy performances of the building envelopes. This work investigates the recycling of expanded polystyrene (EPS) waste within a cement-based matrix. The aim is to develop a lightweight, energy-efficient composite for eco-construction. Portland cement was mixed with a small amount of gypsum (4 wt%) before adding EPS aggregates ranging from 0-0.6 wt%. The thermal properties were determined using two different non-destructive methods, the transient plane source technique (Hot Disk Method) and the Flash method. The experimental results showed a remarkable decrease of 54, 12, and 36% in thermal conductivity, thermal diffusivity, and density, respectively. These results indicate the improvement of thermal resistance of EPS-cement-gypsum- mixes. In addition, water absorption and compressive tests revealed that cement-based composites containing EPS beads have improved durability and can be used for structural and insulation purposes. Finally, Numerical results indicated that energy savings of up to 18% may be achieved by applying produced waste-based mortar, underscoring the promise of using this product for building energy efficiency benefits.
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页数:10
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