Physical Ageing of Buried PVC Sewer Pipes as Affecting their Long Term Behaviour

 

PVC - Pipes and Pipe Systems # 1988 Bath

The investigation has indicated that deflected uPVC pipes are subjected to a physical aging process, which gives rise to a lower rate of decrease in the E-modulus than has previously been assumed. Based upon these findings the long term ring stiffness of PVC sewer pipes is determined. Concerning the bending strength of a deflected PVC pipe, the investigation has so far not indicated any upper limit for the allowable bending strain.

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