International: englishInternational: english
International: english
International: englishInternational: english
Australia: english
Australia: englishAustralia: english
Austria: deutsch
Austria: deutschAustria: deutsch
Canada: english
Canada: englishCanada: english
Czechia: český
Czechia: českýCzechia: český
Denmark: dansk
Denmark: danskDenmark: dansk
Finland: suomi
Finland: suomiFinland: suomi
France: français
France: françaisFrance: français
Germany: deutsch
Germany: deutschGermany: deutsch
Hungary: magyar
Hungary: magyarHungary: magyar
Italy: italiano
Italy: italianoItaly: italiano
Netherlands: nederlands
Netherlands: nederlandsNetherlands: nederlands
Poland: polski
Poland: polskiPoland: polski
Romania: românesc
Romania: românescRomania: românesc
Slovakia: slovenčina
Slovakia: slovenčinaSlovakia: slovenčina
Spain: español
Spain: españolSpain: español
Sweden: svenska
Sweden: svenskaSweden: svenska
Switzerland: deutsch
Switzerland: deutschSwitzerland: deutsch
UAE: english
UAE: englishUAE: english
United Kingdom: english
United Kingdom: englishUnited Kingdom: english

How to: High quality concrete surfaces of round tanks for drinking water and waste water treatment plants


The quality of the concrete surface is an important quality feature, especially for the inner surfaces of water tanks. A surface free of blow holes and with few pores hinders the growth of microorganisms, in addition to which the harder, smoother surface of the structure prolongs its lifetime.
Controlled permeability formliners (CPF) drain, vent and improve the concrete surface and are easy to use, even with circular formwork.

How to

  • The prefabricated Zemdrain® CPF liner can be unrolled with the help of a crane in order to line the inner formwork for the round tank. Before that, a loop tape is attached to the formwork for the subsequent fixing of the ends of the liner. 
  • The CPF liner is first fixed at the ends with screw clamps and then stretched using lashing straps and the pre-mounted eyes. 
  • The ends of the liner hook into the loop tape on the formwork like a hook-and-loop fastening and the lashing straps can then be removed and the eye parts cut off. 
  • A cover sheet of Zemdrain® is attached over the joint. 

Application video

Please accept external cookies to watch this video.
We recommend
Contact Contact

+49(0) 9427 189-0

Max Frank GmbH & Co. KG
Mitterweg 1
94339 Leiblfing