Thermal Properties of New Insulating Juncus Maritimus Fibrous Mortar Composites/Experimental Results and Analytical Laws

Applied Sciences

卷:9

Dominique Baillis¹  Naim Naouar¹  Nawfal Blal¹  Abdelmajid Jemni²  Zahia Saghrouni² 

[1] University Lyon, INSA-Lyon, CNRS UMR5259, LaMCoS, F-6962 Villeurbanne, France;

[2] University of Monastir, National Engineering School of Monastir, Laboratory of Thermal and Energetic Systems Studies (LESTE), Street Ibn ElJazzar, 5019 Monastir, Tunisia;

关键词: thermal insulation;    composite material;    mortar;    Juncus maritimus;    thermophysical properties;    thermal conductivity;    micro computed tomography;    thermal analytical modeling;   

DOI  :  10.3390/app9050981

来源: DOAJ

【 摘 要 】

This study aims to study the thermal properties and the microstructure of composite materials based on mortar combined with Juncus maritimus fibers. Effective thermophysical properties of the composite materials containing Juncus maritimus fibers are experimentally and theoretically investigated. To better understand the morphology of these new composites, the corresponding microstructures were characterized in 2D by scanning electron microscope and in 3D using micro computed tomography. The local thermal conductivity of the Juncus maritimus fibers was identified using theoretical models and experimental measurement of the effective thermal conductivity of packed bed of crushed fibers. The thermal conductivity of the mortar matrix at given porosity was also determined using experimental measurement data and a theoretical model. The most appropriate analytical laws to predict effective thermal conductivity of mortar composites containing fibers are deduced from experimental thermal conductivity results.

【 授权许可】

Unknown