Figure 9
The illustration consists of four plots labeled “a,” “b,” “c,” and “d,” each showing a multi-line graph. In each graph, the vertical axis is labeled “Compression load (kilonewtons)” and ranges from 0 to 500 with an interval of 100. The horizontal axis is labeled “Deformation (millimeters)” and ranges from 0 to 10 with an interval of 2. In graph “a,” the legend includes “Control,” “C R-05,” “C R-10,” “C R-20,” “C R-30,” “C R-40,” and “C R-50,” with each curve represented by a different color. All curves start from the origin (0, 0) and increase towards the right with a bell-shaped pattern, which ends after some distance after reaching the peak. The “Control” curve has the highest peak load and steepest slope, indicating strong resistance with low deformation. As the C R content increases from “C R-05” to “C R-50,” the curves show progressively lower peaks and gentler slopes. The top control curve peaks at (3.373, 472.656), and the bottom C R-50 curve peaks at (4.902, 138.672). The peaks of the curves are slightly shifted to the right side. In graph “b,” the legend remains the same as in “a,” with curves for “Control” and “C R-05” to “C R-50.” All curves start from the origin (0, 0) and increase towards the right with a bell-shaped pattern, which ends just above the bottom right corner. The “C R-05” curve has the highest peak load and steepest slope, indicating strong resistance with low deformation. As the C R content increases from “Control” to “C R-10” to “C R-50,” the curves show progressively lower peaks and gentler slopes. The top C R-05 curve peaks at (3.32, 449.219), and the bottom C R-50 curve peaks at (3.711, 93.75). In graph “c,” the legend includes “Control,” “R 8-05,” “R 8-10,” “R 8-20,” “R 8-30,” “R 8-40,” and “R 8-50,” with each curve represented by a different color. All curves start from the origin (0, 0) and increase towards the right with a bell-shaped pattern, which ends at the lower value of the compression load. The “Control” curve has the highest peak load and steepest slope, indicating strong resistance with low deformation. As the R 8 content increases from “R 8-05” to “R 8-50,” the curves show progressively lower peaks and gentler slopes. The top control curve peaks at (3.412, 474.51), and the bottom R 8-50 curve peaks at (4.549, 196.078). The peaks of the curves are slightly shifted to the right side. In graph “d,” the legend remains the same as in “c,” with curves for the “Control” and “R 8-05” to “R 8-50” labels. The curves show similar patterns to those in graph “c,” but the peak and gap between the curves become shorter. The top control curve peaks at (2.441, 390.196), and the bottom R 8-50 curve peaks at (4.291, 92.157). The peaks of the curves are slightly shifted to the right side. Note: All numerical data values are approximated.Load vs deformation curves of SCB with (a) CR at ambient, (b) CR post 2 h standard fire, (c) R8 at ambient, and (d) R8 post 2 h standard fire exposure. Authors’ own work