Abstract
ABSTRACT This work presents an experimental investigation of creep behavior of polymer blends and felt-filled plastics used to rehabilitate deteriorated sewer pipelines, with emphasis on characterizing the effects of physical aging and temperature. The procedure for finding the aging shift rate μ is based on Struik's protocol and includes a novel method for rotating the data in addition to shifting. The master curve, obtained by Time Temperature Superposition (TTSP), of short-term data is shifted to the desired test temperature and initial age. A novel method is proposed to incorporate data from several specimens into a single averaged master curve and shift factor plot. Long-term behavior of the samples is predicted using the master curve and Effective Time Theory (ETT). The predicted long-term creep behavior is found to be close to the experimentally measured long-term creep behavior.
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