## 3 Results and Discussion
### Discussion of Orthogonal Experimental Results
#### 3.1.1 Effect of Factors on the Fluidity Ratio of Composite Micronized Powder  
As can be seen from Table 5, the order of the influence of each factor on the fluidity ratio of composite micronized powder is A \(>\) B \(>\) C \(>\) D. Figure 1 shows the effect curve of four factors on the fluidity ratio of composite micronized powder. It can be seen that, with the increase in BFS doping, the composite micronized powder fluidity ratio increases first and then decreases; with the increase in MTS and GS doping, the fluidity ratio of composite micronized powder roughnesss an increase. Furthermore, the fluidity ratio of composite micronized powder decreases with the amount of DG and then increases. When the ratio is A2B4C4D4, the compound micronized powder has the largest fluidity ratio, i.e., 25% BFS, 30% MTS, 0.3% GS, 10% DG and 35% WQMS. [PERSON] [17] et al. found that BFS powder contains a large number of glass beads or needle-like glass bodies with dense and smooth surfaces, which do not easily adsorb water molecules in the gelling system, causing a tumbling effect and easily producing a smooth sliding surface, thus improving its fluidity. In addition, in the gelling system, with water filled in the spaces between the particles, the surfaces of the particles are water-wrapped, forming a water film layer. The thickness of the water film layer and the quantity of surface \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Number**} & \multirow{2}{*}{**Fluidity (mm)**} & \multirow{2}{*}{**Fluidity Ratio (\%)**} & \multicolumn{2}{c}{**Electric Flux (\(\epsilon\))**} & \multicolumn{2}{c}{**Compressive Strength/MPa**} & \multicolumn{2}{c}{**Activity Index/\%**} \\ \cline{4-7}  & & & **7 d** & **28 d** & **7 d** & **28 d** \\ \hline Control & 195 & 100 & \(\backslash\) & 33.1 & 50.8 & 100 & 100 \\ F1 & 180 & 92.3 & 2877 & 20.4 & 39.3 & 61.6 & 80.3 \\ F2 & 180 & 92.3 & 2750 & 23.9 & 36.7 & 72.2 & 75.0 \\ F3 & 188 & 96.4 & 2013 & 31.1 & 45.0 & 94.0 & 92.1 \\ F4 & 195 & 100 & 1921 & 31.4 & 44.3 & 94.9 & 90.6 \\ F5 & 185 & 94.9 & 2126 & 28.3 & 40.2 & 85.6 & 82.2 \\ F6 & 190 & 97.4 & 2410 & 27.8 & 36.9 & 83.8 & 75.5 \\ F7 & 194 & 99.5 & 2518 & 30.1 & 42.8 & 90.9 & 87.4 \\ F8 & 186 & 95.4 & 1964 & 32.0 & 48.0 & 96.8 & 98.1 \\ F9 & 180 & 92.3 & 2018 & 31.7 & 40.6 & 95.7 & 83.0 \\ F10 & 174 & 89.2 & 1926 & 30.6 & 39.1 & 92.4 & 79.9 \\ F11 & 183 & 93.8 & 2552 & 33.2 & 44.0 & 100.3 & 90.0 \\ F12 & 186 & 95.4 & 2289 & 29.0 & 44.7 & 87.6 & 91.3 \\ F13 & 185 & 94.9 & 1799 & 29.0 & 46.4 & 87.6 & 94.8 \\ F14 & 180 & 92.3 & 2234 & 27.8 & 37.9 & 84.0 & 77.5 \\ F15 & 177 & 90.8 & 1554 & 34.3 & 43.5 & 103.5 & 89.0 \\ F16 & 178 & 91.3 & 1869 & 31.0 & 44.2 & 93.6 & 90.3 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Results of orthogonal experiment. \begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Performances**} & \multicolumn{2}{c}{**Factor**} \\ \cline{2-5}  & **A (BFS)** & **B (MTS)** & **C (GA)** & **D (DG)** \\ \hline Activity index/\% & 7 d & 13.3 & 14.6 & 7.8 & 13.4 \\  & 28 d & 3.4 & 15.6 & 4.1 & 5.3 \\ Fluidity ratio/\% & 4.5 & 2.7 & 2.6 & 2.2 \\ Electric flux/c & 526 & 319 & 386 & 504 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Range analysis of orthogonal experiment. layer water are the main factors affecting the fluidity of the slurry. Since the particle size of BFS powder is smaller than that of cement particles, it can displace the filling water between cement particles and release the water within the gaps among the cement particles, which accordingly increases the thickness of the water film layer and the quantity of surface-layer water, thus improving the fluidity of the slurry [17]. However, since its particle size is smaller than the cement particles, resulting in a larger specific surface area, the mixing process requires more water than cement.