November 2014, Vol. 69, No. 11
Equipment Spotlight
Rehab Focus: Manhole Repair Products
Manhole repair products by Hobas Pipe USA, The Strong Company, Cretex Specialty Products, Raven Lining Systems, AP/M Permaform, Avanti, Sauereisen, Sealing Systems, Protective Liner Systems, Containment Solutions, Parson Environmental Products and CCI Spectrum.
Hobas Pipe USA
Hobas Pipe USA produces T-Base manhole systems and other fittings including elbows, reducers and wyes. Fittings are manufactured of the same the inherently corrosion-resistant materials as the pipe. Hobas produces pressure and gravity pipes from 18 to 126 inches plus specialty fittings. Leak-free, push-together joints reduce installation time and costs. 800.856.7473, hobaspipe.com
The Strong Company
The patented Strong-Seal System offers a complete family of cost-effective engineered products, specifically designed to rehabilitate municipal concrete and masonry structures and effectively stop inflow, infiltration and exfiltration. MS-2A and MS-2C are fiber-reinforced, spray-applied cementitious mortars. Both products fill all voids and achieve a mechanical and chemical bond to the existing substrate. The result, when spray-applied to a minimum 1/2-inch thickness, is an impervious monolithic liner with compressive and flexural strengths exceeding that of the original structure. The MS-2A product is the most cost-effective solution for stopping infiltration and restoring structural integrity, while the MS-2C product provides high early strengths and added corrosion protection in mild sulfide environments. 800.982.8009, strongseal.com
Cretex Specialty Products
EasySeal SG is a two component spray applied urethane sealant which provides a flexible seal in the grade ring area of manholes to reduce or eliminate frame-chimney inflow. EasySeal SG has been specifically formulated for use in sanitary sewer manholes and allows for quick, easy application with minimal surface preparation. EasySeal SG features excellent elongation, peel strength and tensile strength in excess of 3000 psi. EasySeal SG is a thixotropic material that gels within seconds of application, allows for easy material build up and is dry to the touch in minutes. 800.345.3764, cretexseals.com
Raven Lining Systems
Raven 760 High Performance Polymer Concrete (HPPC) is for use on concrete and masonry structures. Designed as a stand-alone resurfacing product, the 760 may be used to repair voids, spalls or exposed aggregate up to ¼-inch thick per application. Additionally, self-priming Raven 760 may be used as an underlayment to reduce out-gassing for applications of various topcoats. The 760’s properties allow it to be efficiently sprayed or troweled to rehabilitate substrates providing a suitable surface for the application of a polymer topcoat in a variety of technologies. The product is supplied in a convenient self-contained, pre-measured easy-to-use kit and can be top coated in three hours after application (at 72 degrees F) with an extended 14-day recoat window. 800.324.2810; ravenlining.com
AP/M Permaform
PERMAFORM pours a new concrete manhole and permits the internal assembly of steel forms conforming to the interior dimensions rising through the eccentric or concentric cone or flat top then vibrating high strength concrete into the three inch annulus between the forms and the old wall thus building a new manhole within the old. Wherever the old wall is weakest, the new wall is thickest. Both corrosion and chemical protection are available with Cor+Gard, embedded plastic liners, or ConmicShield additive in the concrete. 800.662.6465, permaform.net
Avanti
Manhole rehabilitation with Avanti’s chemical grout is necessary for the safety and longevity of our underground infrastructure. Groundwater enters into sewer systems everyday through manholes causing treatment plant overloads. There are five techniques to stop infiltration: Curtain Grouting, Vertical and Horizontal Crack Injection, Probe Grouting and Oakum Soakum. Each technique enables you to stop several leaks at the same time and extend the life of the structure. 800.877.2570, avantigrout.com
Sauereisen
Sauereisen produces sealants, corrosion barriers and substrate repair materials for the protection and restoration of wastewater infrastructure. Sauereisen’s expertise with brick and concrete manholes includes resistance to acidic environments and prevention of water inflow/infiltration. Sauereisen products accommodate both rehab and preventive maintenance. Today, Sauereisen combines material science and easy applications. We’re at the forefront of advancing plural component spray installation methods that allow manhole restoration projects to proceed with less down time. 412.963.0303, sauereisen.com
Sealing Systems
Infi-Shield Gator Wrap prevents infiltration and erosion by providing a water-tight seal around any manhole, catch basin or pipe joint. Gator Wrap resists harsh soil conditions and also provides a root barrier for any crack or joint. Gator Wrap installs easily with no special tools and can be immediately backfilled. 800.478.2054, ssisealingsystems.com
Protective Liner Systems
A new 100 percent solids flexible novolac and urethane hybrid chimney seal is available from Protective Liner Systems. PerpetuSeal Flex is a flexible manhole chimney seal and joint sealant for sewer structures. The sealant offers excellent adhesion to almost all materials and offers high chemical resistance giving it a wide range of uses. It is a great addition to any rehab contractor’s tool box. 877.462.6465, protectivelinersystems.com
Containment Solutions
CSI has created a non-corroding fiberglass manhole liner. Designed to simply fit within an existing concrete, brick or pre-cast manhole; installation has never been easier or faster. The fiberglass rehabilitation manholes provide a structural barrier that can withstand H-20 traffic loads and is resistant to hydrogen sulfide, which causes concrete to corrode. These manholes are watertight and built in one single piece to avoid leaks in joints or seams. The best part is that CSI fiberglass manholes and rehabilitation manholes do not require extensive preparation of deteriorated interior surface areas which not only add time but cost to a project. The manholes can be sized to fit any of the standard manhole dimensions. 800.628.2657, containmentsolutions.com
Parson Environmental Products
Parson CA Liner 100 is a pure-fused calcium aluminate mortar that provides both structural integrity and chemical resistance to aging manholes and other sewer related structures. Able to be hand- or spray-applied up to two-inch thick per coat, CA Liner 100 has extended working time compared to similar products on the market. 800.356.9023, parsonenvironmental.com
CCI Spectrum
SpectraShield is a patented, systematic layering of polymer resins designed to rehabilitate and protect wastewater structures such as manholes, wet wells or wastewater treatment plant facilities. A typical seven-foot deep manhole can be completed in approximately one hour. SpectraShield carries a 10-year warranty. 904.268.4951, spectrashield.com
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