Hossain, F.; Arifuzzaman, M.; Islam, M.S.; Islam, M.M. Thermo-Mechanical Behavior of Green Sandwich Structures for Building and Construction Applications. Processes2023, 11, 2456.
Hossain, F.; Arifuzzaman, M.; Islam, M.S.; Islam, M.M. Thermo-Mechanical Behavior of Green Sandwich Structures for Building and Construction Applications. Processes 2023, 11, 2456.
Hossain, F.; Arifuzzaman, M.; Islam, M.S.; Islam, M.M. Thermo-Mechanical Behavior of Green Sandwich Structures for Building and Construction Applications. Processes2023, 11, 2456.
Hossain, F.; Arifuzzaman, M.; Islam, M.S.; Islam, M.M. Thermo-Mechanical Behavior of Green Sandwich Structures for Building and Construction Applications. Processes 2023, 11, 2456.
Abstract
In this work, three different types of sandwich structures were manufactured using Formica sheet (a paper-based sheet) as skin and perlite/sodium silicate foam as core with/without the paper honeycomb. The sandwich structures were fabricated by attaching Formica sheets on both sides of the honeycomb, perlite/sodium silicate foam, and perlite/sodium silicate foam-filled honeycomb core panels. The flexural characteristics were studied by a three-point bending test and the thermal conductivity was measured using Lee’s thermal conductivity apparatus. The results demonstrated a significant improvement in flexural properties, including core shear stress, facing stress, bending stress, and energy absorption, when incorporating the paper honeycomb reinforcement. The thermal conductivity and flexural properties were found to be well-compatible with the existing building materials for similar applications in the literature. The failure investigation revealed that the sandwiches with paper honeycomb only prematurely failed due to core buckling, whereas the foam-filled honeycomb core-based sandwiches were able to sustain higher loads, exhibiting material failures such as core shear failure, skin rapture, and delamination. It is found that the foam-filled paper honeycomb sandwich structures can withstand higher bending loads compared to foam core-based and paper honeycomb-based sandwich structures. These developed sandwiches offer potential as green materials due to the characteristics of their constituent materials and can find valuable applications in the building thermal insulation.
Keywords
Perlite Composite-filled Paper Honeycomb Sandwich; Thermal Insulation Board; Green Sandwich Structure; Flexural Properties; Thermal Conductivity
Subject
Chemistry and Materials Science, Ceramics and Composites
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
