RESEARCH PROBLEM STATEMENT High density polyethylene (HDPE) is being used as drainage pipe material because it is lightweight, corrosion resistant, easy to install, and has a low maintenance cost. The design of HDPE corrugated drainage pipe is based on the assumption that the pipe will deform and thus relieve stress. Consequently, ductility is an essential parameter to accommodate allowable deflection during the pipe's service life. HDPE resins with low ductility can lead ...
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