| 摘要 |
A method for protecting and for restoring structural strength and substance to a concrete, fluid containing or conducting structure deteriorated to the condition of removal of substance of the concrete by sulfuric acids and like corrosive material in contact therewith is described by positioning a relatively thin thermoplastic layer of polyvinyl chloride or polyethylene, injecting a substratum of epoxy foam, polyurethane foam, or a combination thereof between the thermoplastic layer and the deteriorated concrete, and welding the foam to the thermoplastic layer. The product of the process is described.
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