The term “durability” is defined and the use of
macrostructure versus microstructure tests for evaluating durability is
discussed. Tensile strength (macrostructure test) results are compared to
solution/intrinsic viscosity and carboxyl end group values (from
microstructure tests) measured on both exhumed and baseline polyester
geotextiles from two projects representing 11 years and 20 years of insitu
exposure, respectively. The relationship between solution/intrinsic viscosity
and carboxyl end group properties and polyester durability is explored.
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