Seaweed boards as value-added natural waste product for insulation and building materials  

作　　者：Kledi Xhaxhiu Avni Berisha Nensi Isak Besnik Baraj Adelaida Andoni 

机构地区：[1]Department of Chemistry,Faculty of Natural Sciences,University of Tirana,Tirana,1001,Albania [2]Research Center of Nanotechnology(NanoAlb),Academy of sciences of Albania,Tirana,1001,Albania [3]Department of Chemistry,Faculty of Natural and Mathematics Science,University of Prishtina,Prishtina,10000,Kosovo

出　　处：《Energy Storage and Saving》2024年第4期270-277,共8页储能与节能(英文)

摘　　要：Large amounts of seaweed are deposited on shores worldwide daily.The presence of this natural pollutant on the coast is not only considered an environmental burden but also often hinders the development of tourism in the affected areas.Depending on the beach surface area,local governments worldwide spend considerable portions of their budgets to remove seaweed from beaches.Moreover,the removed seaweed occupies increasing space in landfills where it is disposed.Seaweed is noncombustible and decomposes slowly over long periods.In this study,we consider the use of seaweed(a natural waste)as a value-added product for insulation and building materials.Seaweed(Posidonia Oceanica)boards with dimensions of 250 mm×60 mm×10 mm were obtained by pressing a mixture of processed seaweed and an organic binder.The as-prepared boards were analyzed for their physical–mechanical properties according to the British standards.The boards with a mean humidity level of 9.15%and density of 404.5 g·cm^(-3)demonstrated a maximum bending resistance of 2.72×10^(3)N·m^(-2)and mean expansion upon water adsorption of~10%with regards to length and width and~30%with regards to height.The tested samples showed significant humidity resistance according to the boiling test and an average thermal conductivity of 0.047 W·m^(-1)·K^(-1),which is comparable to that of polystyrene.Computational analysis of the“seaweed material”model revealed significant thermal and mechanical properties.The mechanical strength of the computed material,including its high Young’s and shear moduli,renders it a promising candidate in construction.

关 键 词：SEAWEED Natural waste Waste recycling Building material INSULATION Thermal and mechanical properties CALCULATIONS 

分 类 号：TG1[金属学及工艺—金属学]