Sustainable New Brick and Thermo-Acoustic Insulation Panel from Mineralization of Stranded Driftwood Residues

Energies

Nastaran Makaremi¹  Veronica Lucia Castaldo¹  Claudia Fabiani¹  Gianluca Cavalaglio²  Andrea Nicolini²  Anna Laura Pisello²  Franco Cotana²  Marco Barbanera² 

[1] CIRIAF—Interuniversity Research Center on Pollution and Environment “Mauro Felli”, University of Perugia, Via G. Duranti 67, Perugia 06125, Italy;Department of Engineering, University of Perugia, Via G. Duranti 93, Perugia 06125, Italy;

关键词: biomass;    stranded driftwood residues;    building envelope;    thermal and acoustical properties;    bio-based composite;    energy efficiency in buildings;    environmental sustainability;   

DOI  :  10.3390/en9080619

来源: DOAJ

【 摘 要 】

There is considerable interest recently in by-products for application in green buildings. These materials are widely used as building envelope insulators or blocks. In this study, an experimental study was conducted to test stranded driftwood residues as raw material for possible thermo-acoustic insulation panel and environmentally sustainable brick. The thermal and acoustic characteristics of such a natural by-product were examined. Part of samples were mineralized by means of cement-based additive to reinforce the material and enhance its durability as well as fire resistance. Several mixtures with different sizes of ground wood chips and different quantities of cement were investigated. The thermo-acoustic in-lab characterization was aimed at investigating the thermal conductivity, thermal diffusivity, volumetric specific heat, and acoustic transmission loss. All samples were tested before and after mineralization. Results from this study indicate that it is possible to use stranded driftwood residues as building materials with competitive thermo-acoustic properties. In fact, the thermal conductivity was shown to be always around 0.07 W/mK in the unbound samples, and around double that value for the mineralized samples, which present a much higher volumetric specific heat (1.6 MJ/m3K) and transmission loss capability. The lignin powder showed a sort of intermediate behavior between the unbound and the mineralized samples.

【 授权许可】

Unknown