Improving thermal insulation of buildings envelopes can reduce their energy consumption and related CO₂ emissions considerably. Searching for new and innovative insulation materials is therefore a key challenge. This paper presents an experimental study to show the effect of adding spent coffee grounds (SCGs) on thermal properties of plaster composite. The obtained results using the box method show a significant decrease of thermal conductivity along with an increase of the coffee ground content, indicating the possible usage of the resulting material as efficient insulation in buildings. It is found that the thermal conductivity of the resulting building material can be decreased from 0.5 to 0.31 W/m.K by adding 6 wt% of CGs to the initial material. To illustrate energetically and environmentally the benefit of using the proposed material, annual simulations were carried out for a typical Moroccan house located in Marrakech. The results indicated that up to 20% of the cooling and heating loads of the building can be reduced if the proposed material substitutes the conventional one. From an environmental point of view, the utilization of the proposed material can reduce up to 1500 kg CO₂, annually for the studied case.

改善建筑物围护结构的隔热性能可以减少其能耗和相关的CO ₂排放排放量很大。因此，寻找新的和创新的绝缘材料是一个关键的挑战。本文提出了一项实验研究，以显示添加废咖啡渣（SCG）对石膏复合材料的热性能的影响。使用盒式方法获得的结果显示出导热率显着下降，同时咖啡粉含量增加，这表明可能将所得材料用作建筑物中的有效隔热材料。发现通过将6wt％的CGs添加到初始材料中，可以将所得建筑材料的热导率从0.5降低至0.31W / mK。为了从能源和环境角度说明使用建议的材料的好处，我们对位于马拉喀什的典型摩洛哥房屋进行了年度模拟。结果表明，如果所提出的材料替代传统材料，则可减少建筑物最多20％的制冷和供暖负荷。从环境的角度来看，所提议材料的利用最多可以减少1500千克二氧化碳₂，每年针对所研究的案例。