Abstract
The effect of damage on the durability of a commercial sand-filled glassfibre reinforced plastics sewer lining in 0·5 m H 2SO 4 under load has been studied. External damage to the sewer lining was simulated by notching and inducing pre-cracks into the resin-rich barrier layer. Internal damage such as microcracking of the glass-fibre/sand-particle laminae was simulated by pre-stressing to a 1% strain at the surface of the barrier layer which remained uncracked. The relatively short- and long-term acidic stress corrosion results are compared with their undamaged counterparts.
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