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Polypropylene gets lumpy in concrete

Thread starter Cemtwo
Start date Jun 5, 2003

Status: Not open for further replies.

Jun 5, 2003

Cemtwo

Civil/Environmental

I'm wondering about the polypropylene fibers in concrete. We've had few problems with the fibres in drymix-products. Polypropylene fibers (PP-mix) seem to have orientation to stick together while mixing the product.

I got the information that the fibres are good only for six month because of some oil that is used on the surface of the fibers. Does anyone have experience of similar problems with the fibers? Should fibers be hydrophilous or hydrophopic?