One of the challenges of maintaining structural support components in a typical commercial marine environment -- components such as bridge columns, marine piles, pier piles, seawalls and bulkheads -- is that they are subject to corrosion that weakens the entire structure.
Since these structural components may be partially submerged in water or buried in soil, many ports and industries prefer repairs without extensive underwater procedures or underwater excavation.
SPiRe® technology is impermeable, highly corrosion-resistant fiber reinforced polymer (FRP) that reduces the corrosion process to virtually zero by keeping both oxygen and water from reaching critical components of the structure.
SPiRe® installation requires precise positioning of custom panels directly over existing corroded sheet piles, and securing with pre-installed bolts. Once the lightweight, non-metallic panels are firmly attached to the worn piles, the edges of the panels are sealed and the annular space between the sheet pile and SPiRe® is filled with specialized grout or resin. The impervious SPiRe® panels prevent intrusion of oxygen and moisture to the original corroded sheet pile. It is well known that oxygen and moisture are the fuel to the corrosion process and by protecting the steel sheet pile from these elements, the corrosion process immediately comes to a near halt.
Read more about SPiRe® technology in Marine News magazine here.
A SPiRe application is shown in a YouTube video from QuakeWrap's marine repair playlist here. The submerged pilaster or column in this wall is damaged by corrosion and requires repair. A segment of SPiRe® is manufactured that is slightly larger than the original column size. This section is bolted or epoxy-bonded to the wall. The edges of the SPiRe® are sealed to prevent any leakage and a grout is placed in the annular space between the stay-in-place form and the column.
The SPiRe® repair system significantly reduces construction time and cost. This is particularly true for partially submerged applications as the product eliminates the need for expensive coffer dams.
Contact a PileMedic engineer today to find out more at (520) 791-7000.
SPiRE® uses the same technology as award-winning StifPipe® by QuakeWrap®. Stifpipe® is the winner of the 2016 ASCE Innovation Award as the World's First Green and Sustainable Pipe.