Steel corrugated metal pipes (CMP) used in construction of culverts often corrode, resulting in reduced load rating for the culvert. Slip-lining the culvert with a smaller diameter pipe has been successfully used worldwide. However, when the site is remote, the transportation charges and the need for heavy jacking equipment add significant cost to such repairs.This paper describes the development of a new type of sandwich Fiber Reinforced Polymer (FRP) pipe for slip-lining culverts. The pipe can be made on site or very close to the site to minimize transportation costs. Various layers of glass FRP are wrapped around a lightweight honeycomb core to create a rigid pipe of any shape or size. The product named StifPipe® received the 2016 American Society of Civil Engineers (ASCE) Innovation Award as the world’s first green and sustainable pipe.
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