## 2 Test of Binder Ratio and Mechanical Properties of Fiber-Reinforced Bamboo Substrate
### Fabrication and Performance Test Analysis of Fiber-Reinforced Bamboo Substrate  
#### 2.3.1 Fabrication of Fiber-Reinforced Bamboo Board  
The fiber-reinforced bamboo board is constructed using high-quality original bamboo as the primary material, the optimal FG-modified MOC as the cementing agent, and glass fiber cloth as the reinforcing material. The binder material for the fiber-reinforced bamboo substrate in this study contained n (MgO):n (MgCl\({}_{2}\cdot\)6H\({}_{2}\)O):n (water-resistant modifier):n (H\({}_{2}\)O):n (gypsum) in the ratio 2:1:0.4 MOC. To comply with the national standard \"Building Decoration Materials Glass Fiber Mesh Cloth\" (GB/T 8696-2008) [28], a glass fiber cloth with a density of 12 \(\times\) 12/cm\({}^{2}\) was used. The glass fiber cloth was cut to a size of 600 mm \(\times\) 240 mm \(\times\) 0.16 mm and used to wrap the bamboo strips. The glass fiber cloth was used as the reinforcement material to create three specimens, and the final average values were recorded. The plate was fabricated in accordance with the \"Boaeds of magnesium oxychloride cement\" (JC/T568-2007) [29] with dimensions of 250 mm \(\times\) 250 mm \(\times\) 12 mm, as shown in Figure 4d. A mold was used to create the fiber-reinforced bamboo board, and its performance was then tested.  
The fabrication process of the fiber-reinforced bamboo board is illustrated in Figure 4. Initially, bamboo slices were cut to dimensions of 240 mm \(\times\) 30 mm \(\times\) 5 mm, with eight bamboo slices placed on the glass fiber cloth, leaving a 1 mm gap between the slices, as shown in Figure 4a, and a 1.5 mm gap between the outermost slices and the mold edge to facilitate MOC cementation. The bamboo slices were wrapped in glass fiber cloth, as shown in Figure 4b. Approximately 5 mm thick MOC slurry was poured into the mold and smoothed. The wrapped bamboo pieces were then pressed into the slurry, adjusted for position, and the test mold was filled with the prepared MOC slurry. Finally, bubbles were removed with a gray knife, and the surface was scraped flat. The size of the sample was 250 mm \(\times\) 250 mm \(\times\) 12 mm, as shown in Figure 4d. After standing for 24 h, demolding was performed. The obtained specimens are shown in Figure 4d. The specimens were cured in a curing room with an ambient temperature of 20 \(\pm\) 5 \({}^{\circ}\)C and a relative humidity of \(\geq\)55% for 28 days.  
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline  & \multicolumn{6}{c}{**Mechanical Properties**} \\ \cline{2-7}
**Dosage of FG** & \multicolumn{3}{c}{**Flexural Strength/(MPa)**} & \multicolumn{3}{c}{**Compressive Strength/(MPa)**} \\ \cline{2-7}  & **7 d** & **14 d** & **28 d** & **7 d** & **14 d** & **28 d** & **Immersion in Water 7 d** \\ \hline
0\% & 4.35 & 4.98 & 5.70 & 36.68 & 43.79 & 47.51 & 39.24 \\
10\% & 4.55 & 5.26 & 6.14 & 37.69 & 44.89 & 49.08 & 41.18 \\
20\% & 4.65 & 5.53 & 7.35 & 38.39 & 45.11 & 54.25 & 45.66 \\
30\% & 4.31 & 5.36 & 7.00 & 36.89 & 43.83 & 48.64 & 40.15 \\ \hline \hline \end{tabular}
\end{table}
Table 2: Specific data on the mechanical properties of MOC doped with FG.