A Cure for Damaged Pipes
Feb 03, 2011
Britain’s leading drain clearage specialist is using a new resin that allows it to plan its sewer repairs better.
Digging up drains is an expensive and bothersome business. Streets may have to be closed while excavators break up the road, and at the end of the operation, the road has to be restored to its original condition. A company that does that needs to have not only drain specialists but also construction teams. So it’s no surprise that no-dig solutions are catching on. Using cameras and flexible fabric lining hardened with resin, drain repairs can be carried out through a manhole. The lining is soaked in resin and fed into a drain, and the resin is then allowed to cure until a pipe-within-a-pipe is formed. The usual resin used is polyester-based and is cured at ambient temperatures. After it has been mixed it remains workable for 20 minutes to an hour. But that can be a problem. Alan Carolan is Excavations and Relining Manager with Machmade, the Liverpool franchise holder for Dyno-Rod, Britain’s leading drain company. His staff hit the limits of polyester-based resin in this year’s long hot early summer.
“We had a freak period of weather here,” he says, “with temperatures in the high 20s Celsius every day. Some of the lads were using polyester, and the liner was curing too fast. They didn’t have time to fit it before it was no longer usable.” Trelleborg has developed a range of epoxy resins that won’t harden as soon. Each product in the range has a different pot life, so that operators can choose the right one for the job. When the lining is in place, curing can be started using steam or hot water, making the process more controllable. “It’s a way of minimizing risk,” says Machmade Managing Director Dave Illingworth. “There’s no wasted material and no panic since it gives you plenty of time to work on it.”
Carolan has been using EPROPOX HC120, which remains usable for about two hours. “It takes about one and a half to two hours to cure using hot water, and that works out well,” he says. The EPROPOX range includes resins with a wide range of pot life – from 60 minutes to 44 hours at 25°c. The resins with the longer pot life are useful for very large sewers, where the liner may be impregnated at the factory or the depot, thus reducing disruption on site. But Machmade mainly works on smaller pipes of 10 to 15 centimeters in diameter. “There’s not much room for error, and we find we get a very good finish on the liner, without any creases,” Carolan says.
One of the main advantages is the reliability of the new resin. “You can tell better how long a job is going to take,” says Carolan. “With ambient cure you can never quite be sure.”
In Britain, the name Dyno-Rod is almost synonymous with drain clearage. Although the company has its own operators, most of the Dyno-Rod vans on Britian’s streets belong to franchise holders. Machmade, founded in 1987 by Dave Illingworth and his brother Neil, is one of these and holds the franchise for the Merseyside area, in northwest England. Dyno-Rod has accepted the EPROPOX range of epoxy resins for use by its franchise holders, and Machmade has been one of the first to try it out. “We’re always looking for the latest innovation, but it has to be balanced with the cost, and this will in fact save us money,” Dave Illingworth says.
A FULL RANGE OF RESINS
Within the Business Area Trelleborg Engineered Systems, Trelleborg develops, manufactures and markets polymer-based sealing solutions for water, drainage and sewerage pipeline systems. Trelleborg also offers a number of solutions within the sewer pipe repair and rehabilitation markets.
Trelleborg’s latest range of epoxy resins includes 10 different products, each adapted to different operational requirements. Ranging from the EPROPOX HC60 to the HC2640, they allow for pot times of between 60 minutes and 44 hours, with the option of even extending that time to several weeks using special low-temperature storage and process control. With either hot water or steam for hot curing, increased flexibility is built into the system. As Michael Mühlin, Managing Director for Trelleborg in Duisburg, says, the new range helps in “reducing overall risk and operations cost.”
P.O. Box 153
231 22 Trelleborg
visiting address: Johan Kocksgatan 10
Tel.: +46 410 670 00
Fax: +46 410 427 63
More News and Articles
Mar 24, 2023
Innovative technologies remove pharmaceutical residues from wastewater
Every year on 22 March, World Water Day reminds us of the importance of one of the most important resources of life. Almost two-thirds of our planet is covered with water, but not even three percent is drinkable freshwater. Every …
Mar 22, 2023
Delivering sustainable solutions to solve water challenges
With British Water’s conference on creating a more sustainable water sector approaching, Stephen Kennedy, head of digital and innovation at MWH Treatment shares his views on celebrating recent successes in creating a more sustainable sector while also discussing the challenge …
Mar 20, 2023
Supporting the National Water Strategy through scientific research
This month, the federal government of Germany introduced the first National Water Strategy. “With this strategy, the federal government is shining a spotlight on the necessity of integrated water resource management, serving as a leading example of resource use in …
Mar 17, 2023
Trenchless manufacturer celebrates installation of 100,000th liner
SAERTEX multiCom®’s trenchless pipe relining product, SAERTEX-LINER, has been installed for the 100,000th time.
Mar 13, 2023
Spring collaborates with Microsoft and Impact X on water innovation
The water sector’s innovation centre of excellence – Spring - is collaborating with Microsoft and Impact X on a new initiative to make tools and funding available for start-ups to accelerate their companies.
Mar 10, 2023
State of Global Water Resources report informs on rivers, land water storage and glaciers
WMO reports on freshwater availability in a changing climate
Mar 08, 2023
Australia: Centenarian sewer gets after-dark upgrade
Over 100 years since its inception, Brisbane’s S1 Main Sewer has undergone a seven-year upgrade.
Mar 06, 2023
UKWIR gives access to hundreds of water sector research reports
UK Water Industry Research (UKWIR) is providing free access to over 1,000 of its water sector research reports aimed at helping to improve water and wastewater services for customers, and protecting the environment.
Mar 03, 2023
Sector must challenge public misconceptions through engagement
The water sector must tackle “unfair criticisms” by sharing more about the great work it delivers, Yorkshire Water’s chief executive, Nicola Shaw, told attendees at British Water’s Better Together reception in Hull.
Mar 01, 2023
World-first project to ‘self heal’ cracked concrete using sludge could save $1.4 billion repair bill to Australia’s sewer pipes
Water treatment sludge could be used to prevent 117,000 kilometres of sewer pipes in Australia from cracking in future, without any intervention by humans, helping to save $1.4 billion in annual maintenance costs.
Feb 27, 2023
Delaware Water Treatment Plant Opts for Penetron to Protect New Concrete Structures
The final 2022 commissioning of the Doe Run Road Water Treatment Plant enables the city of Newark, Delaware (USA), to increase the quantity and quality of the city's drinking water to better meet growing demand – and EPA guidelines. PENETRON …
Feb 24, 2023
Aussie Trenchless: the future of pipe rehabilitation solutions
Aussie Trenchless has been passionate about progressing future infrastructure opportunities and accomplishing superior outcomes since it was founded in 2014.
231 22 Trelleborg
+46 410 670 00
+46 410 427 63