Thermo-Physical Potential of Recycled Banana Fibers for Improving the Thermal and Mechanical Properties of Biosourced Gypsum-Based Materials  

作　　者：Youssef Maaloufa Soumia Mounir Sara Ibnelhaj Fatima Zohra El Wardi Asma Souidi Yakubu Aminu Dodo Malika Atigui Mina Amazal Abelhamid Khabbazi Hassan Demrati Ahmed Aharoune 

机构地区：[1]National School of Architecture Agadir,New Complex,Ibn Zohr University,Agadir,Morocco [2]Energy,Materials and Sustainable Development(EMDD),Center for Water,Natural Resources,Environment and Sustainable Development(CERNE2D),Mohammed V University,Rabat,Morocco [3]Thermodynamics and Energetics Laboratory,Faculty of Science,Ibn Zohr University,Agadir,Morocco [4]Architectural Engineering Department,Najran University,Najran,Saudi Arabia [5]The Centre of Scientific and Engineering Research,Najran University,Najran,Saudi Arabia [6]Physics Department,LPMAT Laboratory,Faculty of Sciences Ain Chock,Hassan II University,Casablanca,Morocco

出　　处：《Journal of Renewable Materials》2024年第4期843-867,共25页可再生材料杂志（英文）

摘　　要：The development of bio-sourced materials is essential to ensuring sustainable construction;it is considered a locomotive of the green economy.Furthermore,it is an abundant material in our country,to which very little attention is being given.This work aims to valorize the waste of the trunks of banana trees to be used in construction.Firstly,the physicochemical properties of the fiber,such as the percentage of crystallization and its morphology,have been determined by X-ray diffraction tests and scanning electron microscopy to confirm the potential and the impact of the mode of drying on the quality of the banana fibers,with the purpose to promote the use of this material in construction.Secondly,the results obtained with the gypsum matrix allowed us to note a preponderant improvement in the composite’s thermal properties thanks to the variation of the banana fiber additive.Thirdly,the impact of the nature of the banana fiber distribution(either fiber mixed in matrix or fiber series model)on the flexural and compressive strengths of the composites was studied.The results obtained indicate that the insulation gain reaches up to 40%.It depends on the volume fraction and type of distribution of the banana fibers.However,the thermal inertia of the composites developed,represented by thermal diffusivity and thermal effusivity,was studied.Results indicate a gain of 40%and 25%,respectively,in terms of thermal diffusivity and thermal effusivity of the developed composites compared to plaster alone.Concerning the mechanical properties,the flexural strength depends on the percentage of the volume fraction of banana fibers used,and it can reach 20%more than the flexural strength of plaster;nevertheless,there is a significant loss in terms of the compressive strength of the studied composites.The results obtained are confirmed by the microstructure of the fiber banana.In fact,the morphology of the banana fibers was improved by the drying process.It reduces the amorphous area and improves the cellulosic crystalline surfaces

关 键 词：Biosourced materials fiber banana flexural strength mechanical properties open-air drying PLASTER thermal properties waste management 

分 类 号：TB30[一般工业技术—材料科学与工程]