Controlled permeability formwork (CPF) liner.
Zemdrain® controlled permeability formliners (CPF) considerably improve the quality of the concrete surfaces of vertical and inclined walls. They are fixed to formwork before erection and once erected, concrete is placed and compacted in accordance with normal practice.
The liners retain the concrete fines whilst allowing the controlled drainage of excess air and water that is normally trapped at the concrete/ formwork interface. Additionally, water retained within the formwork side of the form liner is given back to the concrete during the curing phase.
Use of Zemdrain® optimizes the surface water/ cement ratio, minimizes blowholes and improves early age curing to give a high quality durable concrete surface with optimum resistance to all forms of environmental attack.
Benefits:
Applications:
Suitable formwork:
Flat, convex, timber, steel and plastic.
Material | Polypropylene fibres |
Uniclass 2015 | |
CAWS | E20/665 Controlled permeability form lining finish |
Product Reference | Zemdrain® Classic |
Roll width | 1600 mm1900 mm2250 mm2900 mm3200 mm4000 mm4500 mm5200 mm |
Accessories | NoneZemdrain® cover tapeZemdrain® double-sided adhesive tapeZemdrain® foamed plastic joint tape |
Standard product features | Material: Polypropylene fibres. Roll length: 50 m. Colour/ Finish:
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Product Options | Fixing: Can be secured to formwork using a fixing tool, timber board, staples or tensioned. |