Posts in the ‘Polyurethanes’ Category

Box culvert and weir repair near wetland

The City of Tallahassee had a problem with a street running over a box culvert at Black Swamp. Following several heavy rainfalls, a dip in Park Avenue developed. Eventually, the depression grew so pronounced that it became a traffic hazard. City crews attempted to fix the problem several times using different methods, including replacing a section of pavement and its subgrade, and chemically ...

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Field Notes: Washington State Seawall Stabilization

Technical services manager David Dingler is on his way back from Washington state. He’s been providing on-site technical support for a massive residential seawall stabilization project on Padilla Bay, southwest of Bellingham. A team from Nicholson Construction out of California is pumping Prime Flex 920, a rigid structural polyurethane foam, into voids behind the seawall. In ...

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Void filling under a flooded culvert

Filling a void underneath a box culvert with expansive polyurethane foam is an increasingly common practice. It's another matter when flood waters create a massive void below a triple box culvert underneath busy I-95 and flood waters remain chest high. That's that challenge that Applied Polymerics faced after hurricane-related flooding undermined such a culvert near Lumberton, N.C. Read how they did ...

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Seawall repair options

Winter weather can take its toll on seawalls and bulkheads. Each wave or tidal cycle washes away more soil, creating larger voids behind the wall. Maybe a depression or even a sinkhole grows behind the wall. If you are the owner or the contractor hired to fix it, you've got options. There's replacement, which is expensive and disruptive though sometimes necessary. ...

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Undersealing an Ocean Pool

Several weeks ago we shared a field note from Sydney, Australia, where one of our customers repaired the Bronte Beach Ocean Pool. The concrete pool built at the base of a cliff desperately needed repairs, including resurfacing. Naturally, all the work had to be done at low tide. Removing the old surface and dewatering the pool revealed leaks through cracks ...

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Michael Vargo talks I&I

It's Throwback Thursday, so we're taking you all the way back to WEFTEC 2011 in Los Angeles. Water Online Radio hosts interviewed our senior technical consultant, Michael Vargo. They discussed Prime Resins' solutions to tackling infiltration and inflow, or I&I. While it's a few years old now, this still hits the nail on the head. Polyurethanes are a cost-effective way to ...

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Q&A on using 900 XLV cartridges

By Michael Vargo, senior technical consultant I recently had an email conversation with a customer about crack injection leak sealing with Quick Mix cartridges of Prime Flex 900 XLV that I think would be helpful for others to see. Nick asks: Q: “I have recently used your 900 XLV in 2:1 cartridges for residential foundation crack repairs. I have experienced failures in the ...

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Field Notes: The Land Down Under

Field Notes: The Land Down Under Michael Vargo is just back from a long, successful trip to meet with clients in Australia and New Zealand. He shares before and after photos of this public ocean pool at Bronte Beach in the Sydney suburbs. ...

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Chemical grouting stops manhole infiltration

Heavy groundwater infiltration threatened the timeline to complete a new sewer mainline project in Stratford, Ontario. Thousands of dollars in dewatering costs threatened the project's budget. A few hours of work and 10 gallons of Prime Flex 920 solved the problem and helped get the project back on track. Read the case study here from the Sept./Oct. 2016 Canadian Underground Infrastructure ...

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Field Notes: Culvert Repairs After Hurricane Matthew

Record flooding hit North Carolina in the wake of Hurricane Matthew. The state is faced with the worst flooding since Hurricane Floyd in 1999. In some parts of the state, water levels continued to rise in the days following the storm as flood waters receded elsewhere, draining to other parts of the watershed. That’s the case in Lumberton, N.C. All that ...

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