controlled permeability formwork
controlled permeability formwork
(OP)
Is it any way possible that marine concrete formed by means of "controlled permeability formwork" can be durable without additional protection e.g., from silane treatment, etc.? How durable is such concrete, has there been any documented research work in this respect?





RE: controlled permeability formwork
You do not write what brand of CPF has been used, but generally concrete produced with CPF is very durable and does not need silane treatment or coatings of any sort. What the CPF liner does is to drain out the water in the first approx. 20mm of cover concrete. This increases the density of the concrete cover considerably as the water/cement ratio is lowered. If you would like more information, please see www.formtex.dk. On that web-site is also my contact information, so please do not hesitate to contact me if i can do anything further.
Regards
Morten Sorensen
RE: controlled permeability formwork
Actually we have just delivered the last shipment for a very large marine structure. In this case the concrete was cast using CPF and then treated with Silane. This combination produced an extremely durable surface, and the results from this project are very impressive. I of course have the results, and I would be happy to share them with you.
I hope this answers your questions, if not please let me know.
Regards
Morten Sorensen