## 2 Experimental
### Engineering Performance Evaluation  
(1) Tensile properties  
According to ISO 10319:2015 (Geosynthetics--Wide-width tensile test), we set the distance between the clamps of the CRE type tensile tester to 10 \(\pm\) 0.3 cm. After mounting a specimen with a width of 20 cm, the test was conducted at a rate of 10 \(\pm\) 3%/min until the specimen was broken to measure tensile stress, strain, and elastic modulus. (2) Creep deformation  
The creep deformation test generally used requires a minimum of 10\({}^{4}\) h of test time, representing a very time-consuming process. Therefore, in this paper, the test was conducted with a stepped isothermal method (SIM) based on the time-temperature superposition (TTS) principle with a short test period. The test method was in accordance with ASTM D6992-16 (Standard Test Method for Accelerated Tensile Creep and Creep-Rupture of Geosynthetic Materials Based on Time-Temperature Superposition Using the Stepped Isothermal Method). The distance between the webbing clamps was set to 10 \(\pm\) 0.3 cm, and a 20 cm wide specimen was maintained in a standard condition at 20 \(\pm\) 1 \({}^{\circ}\)C, and a prestress equivalent to 1% of the tensile strength was applied to the specimen before starting the test. In the case of the geotextile, the specimen was exposed to a five-stage temperature increase from 20 \({}^{\circ}\)C to 76 \({}^{\circ}\)C in steps of 14 \({}^{\circ}\)C, and data were recorded every \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**LCP Woven** & **Year** & **Weave** & **Yarn** & **Density** & **Strength** & **Elongation** \\
**Geotextile** & & & **(Denier)** & **(g/cm\({}^{3}\))** & **(GPa)** & **Elongation** \\ \hline \hline
\begin{tabular}{c} Warp \\ Weft \\ \end{tabular} & Vectran® & Twill & 1000 & 1.4 & 1.1 & 3.8\% \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Specifications of LCP woven geotextile. Figure 1: Fabric design diagram and photograph of geotextile. (**a**) Fabric design diagram; (**b**) LCP woven geotextile. 2 s at the beginning of the curve, and then every 60 s. Table 2 shows the experimental conditions, and Figure 2 shows the creep tester. (3) UV resistance test  
According to ASTM D4355-14 (Standard Test Method for Deterioration of Geotextiles by Exposure to Light, Moisture, and Heat in a Xenon Arc-Type Apparatus), exposure was performed for 20 days in a cycle of constant humidity and a certain time in a constant temperature and light exposure environment, and then tensile strength retention was measured and analyzed. (4) Chemical degradation test  
According to ASTM D5322-17 (Standard Practice for Laboratory Immersion Procedures for Evaluating the Chemical Resistance of Geosynthetics to Liquids), immersion was \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Test Item** & **Isothermal Duration** & \begin{tabular}{c} **Temperature** \\ **(°C)** \\ \end{tabular} & \
\begin{tabular}{c} **Loading Level** \\ **(\%)** \\ \end{tabular} \\ \hline \hline
\begin{tabular}{c} Stepped isothermal \\ method (SIM) \\ \end{tabular} & 10,000 s & 20, 34, 48, 62, 76 & 50–82 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Test design for creep deformation. Figure 2: Photographs of creep test apparatus for SIM. **(a)** Creep test apparatus; **(b)** Loading system **(left)** and control system **(right)**. performed at temperatures of 23 \({}^{\circ}\)C and 50 \({}^{\circ}\)C at pH 5, 11, and 13 for 60 days, and then tensile strength retention was measured and analyzed. (5) Biological degradation test  
According to BS EN 12225:2000 (Geotextiles and geotextile-related products--Method for determining the microbiological resistance by a soil burial test), short-term acceleration tests were performed in exposure and construction environments by microorganisms or bacteria in the soil, and then tensile strength retention was measured and analyzed. (6) Evaluation of fatigue characteristics of the LCP woven geotextile  
When a geotextile is applied to ground reinforcement, it has a function of preventing cracks generated by external force loads.