| Title |
Optimum Details of Thermal-Meta Structures for Enhancing the Insulation Capacity of Concrete Panels |
| Authors |
심지혜(Sim, Ji-Hye) ; 김종원(Kim, Jong-Won) ; 양근혁(Yang, Keun-Hyeok) |
| DOI |
https://doi.org/10.5659/JAIK.2022.38.5.243 |
| Keywords |
Thermal-meta Structures; Honeycomb cells; Laminate; Thermal Conductivity; Insulation; Concrete Lateral Pressure |
| Abstract |
This study examined the flexural strength and thermal transfer resistance of thermal-meta structures developed for enhancing the insulation
capacity of concrete walls and panels. The thermal-meta structure consisted of a paper honeycomb, laminated to be waterproof and
incombustible with infilling materials. Lateral deformation of thermal-meta structures was analyzed from the finite element analysis under the
simulation of concrete lateral pressure calculated for walls to determine the thickness, size, and height of the honeycomb cells. The effect of
different infilling materials, such as air, EPS bead, urethane foam, paraffin, mixture of paraffin and aerogel, on the thermal transfer resistance
of thermal-meta structures was also examined from thermal conductivity tests conducted in accordance with KS F 9016. Considering the
structural safety against concrete lateral pressure and better thermal resistance, the details of a thermal-meta structure indicated the thickness,
size, and height of the honeycomb cells was 4.5 mm, 50 mm, and 70 mm, respectively. The laminate thickness attached on both sides of
the honeycomb was 0.8 mm; and no infilling materials were required for the honeycomb cells to form the closed-pore system. |