## 2 Materials and Methods
### Instrumental Analyses  
The properties of SRC were investigated using the procedures and methods suggested by [PERSON] et al. (2023) [25]. X-ray fluorescence (XRF) (S8 TIGER, Bruker [PERSON], USA) was used to investigate the chemical compositions of the CWP and GGBFS. After the 28-day curing of SRCs, their compressive strength, mineralogical composition, and microstructure were successively investigated. For the examination of mineralogical features of SRC, it was crushed into a size smaller than 74 \(\upmu\)m using a ball mill and X-ray diffractometer (XRD) (Siemens (Munich, Germany) D5005, Cu-K\(\alpha\), 40 kV, 35 mA, step size: 0.02 Deg, Time/step: 5 s) [25]. Furthermore, the microstructure of the SRC was observed using a low-accelerating voltage field-emission scanning electron microscope (SEM) (JSM-7900F, JEOL, Peabody, MA, USA), and the hydration products of the SRC were observed using a Raman spectrometer (Ramantouch, Nanophoton, Osaka, Japan) [25]. The Raman spectrometer was calibrated using a silicon wafer before analysis. The laser having a wavelength of 785 nm was used for Raman analyses to minimize the interference of fluorescent material, and the other conditions were the beam spot of 50 \(\upmu\)m, the laser power of 11 mW, and the exposure time of 30 s. To improve the reliability of the Raman analyses, the final results served as the average of the spectra after each sample was measured twenty times at different spots [25]. \begin{table}
\begin{tabular}{l l l l l} \hline \hline
**Method** & \multicolumn{2}{l}{**In the Mold with a Size of \(27\times 27\times 54\) mm**} & \multicolumn{2}{l}{**Demoloded**} \\ \cline{2-5}  & **Condition** & **Period (Hour)** & **Condition** & **Period (Day)** \\ \hline Air-drying & In a room environment (20 \({}^{\circ}\)C, and 50\% relative humidity) & 24 & In a room environment (20 \({}^{\circ}\)C and 50\% relative humidity) & 28 \\ \hline Water & In a room environment (20 \({}^{\circ}\)C and 50\% relative humidity) & 24 & In a water tank (20 \(\pm\) 2 \({}^{\circ}\)C) & 28 \\ \hline Atmospheric steam & In a room environment (20 \({}^{\circ}\)C and 50\% relative humidity) & 2 & After natural cooling, \\ Gradually increased at a rate of 15 \({}^{\circ}\)C/h & 4 & in a room environment (20 \({}^{\circ}\)C and 28 \\ \hline  & In a room environment (20 \({}^{\circ}\)C and 50\% relative humidity) & 4 \\  & 10 atm, gradually increased at a rate of 90 \({}^{\circ}\)C/h & 2 \\ High pressure and high temperature & 10 atm, maintained at 10 \({}^{\circ}\)C & 7 & In a room environment (20 \({}^{\circ}\)C and 50\% relative humidity) & 28 \\ \hline  & Under the pressure of 10 atm, gradually decreased at a rate of 90 \({}^{\circ}\)C/h until reached 20 \({}^{\circ}\)C & 2 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Conditions of different curing methods. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multicolumn{1}{c}{\multirow{2}{*}{**Exp. No.**}} & \multicolumn{4}{c}{**Binder**} & \multicolumn{4}{c}{**Simulated Radiociave Waste**} \\ \cline{2-9}  & \multicolumn{1}{c}{**Concrete**} & \multicolumn{1}{c}{**Alkaline**} & \multicolumn{1}{c}{**Alkaline**} & \multicolumn{1}{c}{**Aljusting**} & \multicolumn{1}{c}{**(Coarse Aggregate**} & \multicolumn{1}{c}{**Water/**} & \multicolumn{1}{c}{**Curing**} \\  & **(t-0.38 mm)** & & \multicolumn{1}{c}{**Ettinigite**} & \multicolumn{1}{c}{**Reagent**} & \multicolumn{1}{c}{**Agent**} & \multicolumn{1}{c}{**Gygum**} & \multicolumn{1}{c}{**\textgreater{5} mm**} & \multicolumn{1}{c}{**Binder Ratio**} & \multicolumn{1}{c}{**Method**} \\ \hline RC-1 & 47 & - & - & 5 & CGRES & 3 & 30 & 0.4 \\ RC-2 & 44.5 & 2.5 & - & 5 & 15 & 3 & 30 & 0.4 \\ RC-3 & 42 & 5 & - & 5 & 15 & 3 & 30 & 0.4 \\ RC-4 & 44.5 & - & 2.5 & 5 & 15 & 3 & 30 & 0.4 \\ RC-5 & 42 & - & 5 & 5 & 15 & 3 & 30 & 0.4 \\ RC-6 & 44.5 & 125 & 125 & 5 & 15 & 3 & 30 & 0.4 \\ RC-7 & 42 & 2.5 & 2.5 & 5 & 15 & 3 & 30 & 0.4 \\ \hline \hline \end{tabular}
\end{table}