Clogging
Lab Results for Clogging
Lab tests have shown that clogging is not an issue in buried fabrics. The table below summarizes the SEM analyses results. In general, all wicking fabric fibers on the surface suffered from the clogging effect. However, only 6.67% of the wicking fabric fibers beneath the surface suffered from the clogging effect. This indicates that even though the surface was contaminated and the drainage paths were blocked, the wicking fibers beneath the surface were well protected and worked effectively as a drainage material to transport water laterally under unsaturated conditions.
SEM Analysis Results
SEM Images of Clogging Effect
(a) Intact Sample (Surface)
(b) Fabrics on Surface
(c) Fabrics beneath Surface
(d) Wicking Fabrics Comparison
Mechanical Failure
Permanent Deformation (New Geotextile)
(a) Intact Geotextile Sample
(b) Wicking Fabric Yarn
Permanent Deformation Severity
Mechanical Failure
(a) Permanent Deformation (Surface)
(b) Puncturation Failure (Surface)
Aging
(a) Beaver Slide Sample 3
(b) Beaver Slide Sample 11 (Surface)
Salt Concentration
Salt Concentration for Soluble and Insoluble Salt (Drying Process)
(a) 1.5 g/L (NaCl)
(b) 1.5 g/L (CaCO3)
(c) 15 g/L (NaCl)
(d) 15 g/L (CaCO3)
Salt Concentration for Soluble and Insoluble Salt (Wetting Process)
(a) 15 g/L (NaCl)
(b) 15 g/L (CaCO3)
Full Scale Spectrum Analysis
Soluble Salt Concentration