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Abstract:In an effort to evaluate promising pipe lining techniques, the Agency installed two Ultraliner
PVC Alloy Pipeliners in the town of Barton, Vermont in May of 2003; one in an 18
-
inch (450
mm nominal) reinforced concrete pipe (RCP) and one in a 24
-
inch (600 m
m nominal) asphalt
coated corrugated metal pipe. The liners were a folded continuously extruded polyvinyl
chloride (PVC) pipeliner and are designed to return to their extruded shape upon the
application of heat and to be formed tightly against the host pi
pe by “blow molding” with
steam.
In ten years of service life to the publishing of this report, the liners and the culverts have no
visible damage. The liners have halted the degradation of the culverts and extended the
serviceable lives considerably.
Due to these findings, the Agency is in support of continued
use of the Ultraliner product, as well as continued evaluations and usage of similar culvert
lining materials to extend the lives of our culverts and to reduce maintenance costs going
forward
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