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The Effect of pH, Resin Properties, and Manufacturing Process on Laboratory Degradation of Polyester Geosynthetics

1998; Volume: 5; Issue: 5 Linguagem: Inglês

10.1680/gein.5.0133

1751-7613

V. Elias, Ahmad Salman, DG Goulias,

Recycled Aggregate Concrete Performance

The use of geosynthetic products has been steadily increasing in the construction of structures such as retaining walls, steepened slopes, and landfills for the containment of hazardous waste. The lack of information on durability has limited the full utilization of geosynthetics. To assess the durability of polyester (PET) geosynthetics, an accelerated testing protocol was developed and a test program implemented. The test results indicated that low-tenacity PET commercial geosynthetic products were more susceptible to hydrolytic degradation than high-tenacity geosynthetics due to lower molecular weight and a high number of carboxyl end groups (CEG). Tests conducted in acidic, neutral, and alkaline solutions exhibited the same trends.