Non-structural rehabilitation using Tomahawk BluKote™ aerodynamic method
Structural rehabilitation through Acuro polymer resin spraying GeoSpray™ from Milliken
Réhabilitation d’ouvrages visitables par la projection de résine polymérique
“It is necessary to maintain and preserve our existing infrastructure.”
We know that the deterioration of the underground infrastructure poses risks to public health and safety.
Logistique St-Laurent specializes in trenchless rehabilitation of pipes and other infrastructure, and helps meet the needs of each municipality. Our state-of-the-art specialized equipment allows us to offer services catering to the needs of our customers. Research and development are at the centre of our activities and enable us to develop and offer innovative, cost-effective, and durable rehabilitation technologies.
Our services can be applied to installations such as:
“Renew and extend the service life of pipes for decades.”
A significant percentage of the drinking water pipes are nearing the end of their service life. We can act now to extend their service life and generate significant savings in the short and long term.
Here are some of the problems we can fix:
We have developed an efficient, fast, and economical method to preserve the residual structural integrity of pipes and to permanently reduce the harmful and continuous effect of corrosion on the internal wall of pipes.
We offer two rehabilitation techniques for drinking water pipes :
For non-structural rehabilitation, NSF/ANSI 61 certified polymer resin is injected into the pipe immediately after cleaning and, aspirated by the air of the vacuum truck, takes only a few minutes to cover the inner wall of the pipe. A disperser is introduced into the pipe to ensure uniform distribution of the resin on the wall, in the joints, and around the service lines. The resin remains malleable during its dispersion and begins to harden once applied to the pipe so that service can be resumed on the same day. Quality control and disinfection of the pipe are carried out according to the standards.
The Tomahawk technique can be used with cast iron and asbestos cement pipes with diameters ranging from 100 mm (4 in) to 300 mm (12 in), inclusive.
For structural rehabilitation, a gun is introduced into the pipe to spray the Acuro polymer resin following cleaning. The polymer resin, which is NSF/ANSI 61 certified, sets in seven seconds and is dry to the touch after 30 seconds. Consecutive layers of one (1) millimetre in thickness are applied to achieve the required thickness according to the design specified by the ASTM F1216 standard. It is possible to put the pipe back into service 30 minutes after the final spraying. Quality control and disinfection of the pipe are carried out according to standards.
The Acuro technique can be used with cast iron and asbestos cement pipes with diameters of 150 mm and more.
The benefits of the drinking water pipe rehabilitation techniques include:
“The most economical and efficient solution to extend the life of flexible (GCIP) and rigid (concrete) culverts.”
Without interfering with road traffic, the rehabilitation technique for accessible culverts allows to correct structural anomalies, fill cavities behind the wall, repair the invert, and spray anti-abrasive structural polymerized resins (double-layer coating) to reinforce the culvert, protect the inner wall from corrosion and abrasion, and add decades of service life. In addition to rehabilitation, we offer a CT scan service to detect cavities behind the wall of flexible sheet metal culverts.
Accepted studies indicate that more than 80 years of life are added to culverts following the spraying of polymer resin.
Other accessible structures
The manual spraying technology we use can be applied to the rehabilitation of structures of all shapes and sizes. These structures, which need to be accessible, include drinking water, rainwater or wastewater pipes, as well as manholes, tanks, access chambers, ponds, gutters, floors, walls, ceilings, and the like. The resin can be applied to most substrates, including cast iron, concrete, steel, wood, or other materials, which require waterproofing, structural reinforcement, and/or chemical resistance.
1 800 263-7705