SuperLaminate™

What is PipeMedic SuperLaminate™?
SuperLaminate™ is a patent-pending system from the family of SuperLaminates™ developed by Professor Mo Ehsani (University of Arizona) for repair and strengthening of steel, cast iron, corrugated metal, clay, brick, concrete, Prestressed Concrete Cylinder Pipe (PCCP) and wooden pipes and culverts with Carbon Fiber Reinforced Polymer (CFRP) and Glass Fiber Reinforced Polymer (GFRP) laminates. Such pipes are used for conveyance of water, sewer, storm water, oil, gas and other chemicals. Steel and concrete tanks for storage of water, oil, and other chemicals can also be repaired with SuperLaminate™ . SuperLaminate™ allows for the highest quality repairs while reducing the repair time by as much as 80%.

The laminates are manufactured in our plant meeting the highest industry standards (ISO-9000). SuperLaminate™ is manufactured by placing several layers of carbon or glass fabrics together, and applying resin, heat and pressure to obtain very thin (0.025 inches or 0.7 mm or thinner) laminates that can be as wide as 60 inches (1.5 m); they are typically packaged in 300 ft (90 m) rolls. The rolls of SuperLaminate™ can be taken into pipes from access ports as small as 8 inches (200 mm) in diameter.

As you examine the various pages on this website, you will be introduced to the unique advantages of this product and why they make PipeMedic™ a truly remarkable invention for repair of pipes and culverts.

Why did we develop SuperLaminate™ ?

Nearly two decades ago, Professors Ehsani and Saadatmanesh introduced the concept of repair and retrofit of structures with Fiber Reinforced Polymer (FRP) to the construction industry in a paper published at the ACI Concrete International. During this time the application of FRP products has seen significant growth worldwide. However, the form of these materials has remained virtually unchanged.

In the original concept, referred to as the wet layup method, fabrics of carbon or glass are saturated in the field with resins such as epoxy and they are bonded to the exterior surfaces of structural elements such as beams, columns and walls. The materials cure in less than a day, resulting in a reinforcing skin that is 2-3 times stronger than steel. The technique is somewhat labor intensive and requires trained installers to make sure the fibers in the fabric are aligned properly during the installation and that no air bubbles are trapped under the fabric. Samples of the saturated fabric are made each day on the job site and sent to a laboratory for testing to verify the strength of the installed products. However, these results become available in a few days, often after the project is near completion and remedial measures are difficult to implement.

In response to the above shortcomings, we have developed a new “form” of FRP products called SuperLaminate™ which are produced in our manufacturing facility. In this case, one or more layers of glass or carbon fabric are saturated with resin and passed through specially designed equipment that applies uniform heat and pressure. The result is a very thin solid laminated sheet; typical sheets are 0.01-0.025 inches thick X 50 inch wide X 150 feet long. The tensile strength of the laminate is about 155,000 psi. Basically, we have moved 70%-80% of the construction activity away from the field to our production facility. This results in savings in construction time, while improving the quality of the finished installation. Unlike the wet layup method, here the strength of the laminates can be tested prior to installation and if there are any defective products, they can be rejected.

The unique strength and stiffness of SuperLaminate™ allows it to be inserted into pipes, spanning over gaps caused by corrosion of the host pipe and creating a new strong pipe inside the old pipe or culvert. These engineering characteristics that can be tailored to meet the specific project requirements, make SuperLaminate™ ideal for demanding applications such as high pressure gas and water pipes where other conventional repair techniques may fail to meet those challenges. Please click here to learn more about the advantages of this product.

SuperLaminate™ is a very versatile product. Its strength and stiffness allow it to be coiled in the field to create a shell of virtually any size in minutes, like an extremely strong and durable Sonotube. Applications include repair and strengthening of deteriorated and corroded columns, underwater piles, utility poles, encapsulation of underwater piles in the tidal or splash zone. It also offers unique solutions in post-disaster restoration of columns and piles following earthquakes, hurricanes, blast loading, etc. Those products are offered under the trademark PileMedic™.

Test Results and Advantages

We invite you to review the comprehensive test results of SuperLaminate™ by the Gas Technology Institute that resulted in the approval of this product for repair of steel gas mains.

A list of advantages of SuperLaminate™ compared to other liners is available here: click for advantages.