首页|Evaluating the performance of Bamcrete panels at ambient and elevated temperature
Evaluating the performance of Bamcrete panels at ambient and elevated temperature
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NETL
NSTL
Elsevier
In the present study, four types of Bamcrete panels have been fabricated using twin layers of bamboo mesh and four different core materials, namely; glass wool fiber (GWF)-reinforced self-compacting mortar (SCM), styro-foam sheet, rubberized mortar and weaved half-split bamboo. Bamcrete panels were cast using GWF-reinforced SCM to avoid spalling of covering material at elevated temperatures. The core materials have shown a significant effect on the physical and mechanical performance of Bamcrete panels. The insertion of styrofoam sheet as a core material resulted in lowest thermal conductivity of 0.11 W/mK, whereas filling of GWF-reinforced SCM as a core material resulted in highest thermal conductivity of 0.53 W/mK for the Bamcrete panels. From the rebound hammer test, similar values of compressive strength for all the panel surface were obtained because of the same covering material. Bamcrete panels were tested under concentrated load at ambient and elevated temperature up to 600℃. At ambient temperature, the highest load-bearing capacity under concentrated load was obtained as 83 kN for Bamcrete panel (1) having GWF-reinforced SCM in the core area, whereas the lowest load-bearing capacity of 39 kN was taken by Bamcrete panel (2) having styrofoam sheet in the core area. Bamcrete panel (3) with rubberized mortar and panel (4) with weaved half-split bamboo filled with SCM have shown the peak load-bearing capacity of 74 kN and 76.5 kN, respectively. Bamcrete panel (4) has reflected the highest stiffness among all the panels. At elevated temperature, there was a significant loss in peak load capacity of Bamcrete panels. The maximum load taken by Bamcrete panels (1), (2), (3) and (4) after the heating at 400℃ for a duration 60 min. inside an electric furnace were 47.2 kN, 22 kN, 37 kN, and 42 kN, respectively. The peak load capacity of panels (1) and (4) after heating at 600℃ for 60 min. were remained as 33 kN and 31 kN, respectively. There was no charring of bamboo mesh during testing up to the temperature of 400℃, however, styrofoam sheet was burnt out in Bamcrete panel (2) during testing at elevated temperature of 400℃. The bamboo mesh was partially charred only at the top side during testing at 600℃, but no charring has occurred at bottom side of the Bamcrete panels.
NETL
NSTL
Elsevier
