Precoated membranes (82-04-1)

Abstract

This report describes the installation and performance evaluations of precoated membranes in Oklahoma. The report is presented in four separate sections and dsecribes the performance of Bituthene, Polyguard, Protecto Wrap and Petrotac. Each part was considered as a separate project for the evaluation and was compared to the standard overlay design for each project. The precoated membranes were installed in 1978, 1980, and 1982. The width of the membranes over the joints and cracks ranged from 12 in (300 mm) to 46 in (914 mm). The average overlay thickness over the membranes ranged from 1.5 in (38 mm) to 3.75 in (95 mm). All the precoated membranes appeared to be performing well in sealing and diminishing the reflective cracking in a cost effective manner.