Case Studies: Pipeline Rehabilitation and Relining

Case Studies: Pipeline Rehabilitation and Relining

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Trowel liner used to seal high-humidity wet wells

Problem:

Conditions within wet wells/manholes often create complications for contractors. Moisture-saturated substrates are not uncommon within these structures, making coating application environments less than ideal. These types of variables caused Turnipseed Engineers to pivot from their originally selected coating and turn to Epoxytec’s CPP Trowel-Liner for the protection of a concrete wet well, 27-feet deep by 7 feet in diameter, in Columbia County, Georgia.

Solution:

CPP Trowel-Liner performs in areas subject to hydrogen sulfide attack and has the ability to bridge adverse conditions found in high-humidity wet wells, mainly due to its surface and moisture tolerance. It serves as an applied lining system, preventing oxidation while holding back water migration and hydrostatic pressure; this feature makes it ideal for wastewater collection infrastructure. CPP Trowel-Liner was trowel-applied to this Georgia wet well by a two-person crew from MCS Coatings in approximately a day and a half from start to finish.

RESULT:

At the end of this project, not only was Turnipseed Engineers pleased with the results, but the owner, general contractor, and applicator were all impressed with the product and its application. 877-463-7699; www.epoxytec.com 


Adding extra reinforcement to repair a sewer main

Problem:

Residents of Plainville, Indiana, began complaining about the smell of sewer gas near their homes. After some investigation, the town found a 12-inch corrugated metal pipe in a nearby creek that had rotted out. The pipe was removed along with a portion of the 24-inch sewer main it was laid across. 

Solution:

Culy Contracting was called out to repair the sewer main. Vac truck superintendent Eric Nunez worked with his team of five to jet and clean the line before using a 36-inch PipePatch Pillow Kit from Source One Environmental to repair it. Nunez used a repair kit that was larger than the main’s diameter to add extra reinforcement since there was such a wide gap. PipePatch exceeds the ASTM F1216 standards in both its flexural strength and modulus.

RESULT:

Nunez and his team were in and out in four hours — two and a half of which were spent waiting on the patch to cure. The next day, the town came to backfill the patched area with concrete to provide extra protection. Thanks to the flow-through packer Nunez used, the line never had to be taken out of service, which avoided inconveniencing the residents. 877-450-3701; www.s1eonline.com 



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