## 3 Results and Discussion
### Fatigue Characteristics of the LCP woven Geotextile  
The fatigue characteristics of the LCP woven geotextile were analyzed by using the ratio of the crack growth rate and the number of repeated loads. The crack growth rate and expected fatigue life expectancy of reinforcement such as geotextiles were calculated using Equations (6) and (7). In general, the fatigue life of the LCP woven geotextile was measured and evaluated by citing K = 10 N/mm\({}^{1.5}\), A = 1.0 \(\times\) 10\({}^{-8}\), n = 4.3, and design traffic  
\begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**C creep Strain (\%)**} & \multicolumn{3}{c}{**Time (Hours)**} \\ \cline{2-4}  & **0.01** & **438,000** \\ \hline \multirow{2}{*}{Seismic Load} & 100\% & 5.01 & 10.35 \\  & 90\% & 5.00 & 8.75 \\ \cline{1-1}  & 80\% & 5.02 & 8.01 \\ \hline \hline \end{tabular}
\end{table}
Table 10: Creep strain of LCP woven geotextile during creep test by 40% of UTS at initial and critical times.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**C creep Strain (\%)**} & \multicolumn{3}{c}{**Time (Hours)**} \\ \cline{2-4}  & **0.01** & **438,000** \\ \hline \multirow{2}{*}{Seismic Load} & 100\% & 6.00 & 9.91 \\  & 90\% & 6.03 & 8.80 \\ \cline{1-1}  & 80\% & 6.01 & 8.32 \\ \hline \hline \end{tabular}
\end{table}
Table 11: Creep strain of LCP woven geotextile during creep test by 50% of UTS at initial and critical times.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**C creep Strain (\%)**} & \multicolumn{3}{c}{**Time (Hours)**} \\ \cline{2-4}  & **0.01** & **438,000** \\ \hline \multirow{2}{*}{Seismic Load} & 100\% & 7.25 & 10.10 \\  & 90\% & 7.26 & 9.71 \\ \cline{1-1}  & 80\% & 7.26 & 9.41 \\ \hline \hline \end{tabular}
\end{table}
Table 12: Creep strain of LCP woven geotextile during creep test by 60% of UTS at initial and critical times.  
number = 100,000 times/year as values corresponding to woven geotextiles for reinforcement [22].  
The crack growth rate and the fatigue life can be expressed as follows:  
\[\frac{dc}{dN}=A\cdot K^{n} \tag{6}\]  
\[\text{Lifetime}=L/\frac{dc}{dN} \tag{7}\]  
where \(\frac{dc}{dN}\) = crack growth rate for cyclic load; \(K\) = stress concentrator; \(A\), \(n\) = experimental constant; and \(L\) = thickness of the reinforcing layer.  
The fatigue experiment using the LCP woven geotextile was conducted at a fatigue frequency of 5 Hz by applying a partial knitting load using a test sample with a width of 25 mm and a length of 300 mm at room temperature. In addition, the maximum tensile load was 50% of UTS, the minimum tensile load was 100 N/25 mm, and the tensile strength retention rate was calculated from the number of repetitions of fatigue loads at 50,000 times, 100,000 times, 400,000 times, and 600,000 times. The results were calculated by calculating the number of repetitions at the tensile strength retention rate of 90% through linear regression analysis between the number of repetitions and the tensile strength retention rate; the fatigue lifetime is shown in Table 13. When the LCP woven geotextile was used as a reinforcing material, the fatigue lifetime was calculated by the number of repetitions at a tensile strength retention rate of 90%. In the case of the LCP woven geotextile, this meant that it could withstand 478,000 cycles per year by cyclic loading. It was considered that when the LCP woven geotextile was applied as a reinforcing material, there was almost no possibility of collapse of the ground structure when the repeated loads due to fatigue failure were less than 478,000 times per year.