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Short-Term Creep Prediction Model for Composite Geomembranes with Varying Film Thicknesses
Yufan Hao1,2, Xiaodong Wang3, Sheng Feng3
1College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China.
Materials (Basel, Switzerland)
|June 26, 2026
Summary
This study investigated composite geomembranes' (GMs) long-term deformation using creep tests. Thicker GMs showed reduced strain, and a short-term model accurately predicted their behavior.
Area of Science:
- Geotechnical Engineering
- Materials Science
Background:
- Composite geomembranes (GMs) are crucial for seepage control in civil engineering projects.
- Understanding their long-term deformation is vital for ensuring structural safety and stability.
Purpose of the Study:
- To compare the creep deformation behavior of composite geomembranes with varying thicknesses.
- To develop and validate a short-term empirical model for predicting long-term creep deformation.
Main Methods:
- A 90-day creep test was performed on composite geomembranes of different thicknesses.
- Analysis of model parameters and coefficients of variation from creep data.
- Development of a short-term empirical creep model based on experimental data.
Main Results:
- Long-term deformation followed a logarithmic function with thickness-dependent coefficients.
- Increased geomembrane thickness resulted in reduced final stabilized strain.
- The developed short-term model showed good agreement with 72-hour experimental measurements.
Conclusions:
- The study provides insights into the thickness-dependent creep behavior of composite geomembranes.
- A validated short-term empirical model can aid in predicting long-term creep deformation.
- Findings are applicable to the design and safety assessment of seepage control structures.
