Trenchless

Spray-In-Place Pipe (SIPP)

Extend the usable life of a deteriorating structure

Michels uses a variety of methods to maintain and rehabilitate sewer mains, potable water mains, pressure pipes, manholes and culverts. Spray-in-place-pipe, also known as SIPP, systems apply cement mortar, epoxies, geopolymers and polyureas inside pipes to improve driving water quality and prevent further internal degradation.

Spray-in-place pipe rehabilitation is well suited for many situations, including irregular shapes and bends. Depending on the material we use in our mortar mixes, the uses and cured properties of SIPP rehabilitation applications can be vastly different. Concretes, epoxies and geopolymers are used to protect and renew aging manhole structures by applying the materials through spinning or hand spraying in place.

Spray-In-Place Pipe materials:

• Geopolymer: A fiber-reinforced geopolymer mortar lining material is used for manhole rehabilitation of large-diameter sewer mains, culverts and other host pipes made from brick, concrete or corrugated metal. This fully structural solution is suitable for pipes ranging in diameters of 30 inches up to more than 10 feet.
• Cement and epoxy: Cement mortar and NSF61-approved epoxy lining materials restore hydraulic capacity and water quality to potable and raw water pipes. Both non-structural materials protect against internal corrosion and tuberculation to maintain a healthy environment. Cement mortar can be used on pipes with a minimum diameter of three inches; epoxies are best suited for concrete, iron and asbestos pipes that are at least four inches in diameter.

Projects

Michels rehabilitated a deteriorating corrugated metal pipe culvert under a busy roadway. Michels prepared the walls and floor and completed the spray application of 3-inch Millikin Geospray geopolymer mortar to the 128-inch-by-73-inch-by-75-foot culvert. In total, 68,000 pounds of material was mixed and applied.

Spray-In-Place Pipe (SIPP)

Palos Hills Culvert Rehabilitation

Illinois

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Palos Hills Culvert Rehabilitation

Michels rehabilitated 75 linear feet of a 60-inch corrugated metal culvert pipe with 1-1/2" of geopolymer mortar spray-in-place pipe (SIPP) lining.Michels obtained the geopolymer mortar in dry form and mixed the material on-site prior to and during application.

Spray-In-Place Pipe (SIPP)

Rural Wisconsin culvert repair

Wisconsin

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Rural Wisconsin culvert repair

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