Electronic Copy - RIBA Product Selector

Electronic Copy Fibertex A/S Box 8029 Svendborgvej 2 DK – 9220 Aalborg Øst Denmark Tel: 00 45 9635 3535 Fax: 00 45 9815 8555

Designated by Government to issue European Technical Approvals

CI/SfB B2d

Agrément Certificate No 03/4038

e-mail: [email protected] website: www.formtex.dk

FORMTEX CONTROLLED PERMEABILITY FORMWORK LINER Recouvrement de coffrage Verschalungsabdechung

Product

Formtex

Normal

• THIS CERTIFICATE OF CONFIRMATION RELATES TO FORMTEX CONTROLLED PERMEABILITY FORMWORK LINER (CPF), A TWO-LAYER, NON-WOVEN POLYPROPYLENE FABRIC LINER. • The product is tensioned or glued to conventional formwork. • The product enhances the durability and surface appearance of concrete, by significantly reducing the permeability of the concrete appearance by virtual elimination of the blowholes and other surface defects. • The product is used for casting Portland cement or blended Portland cement concretes of all currently accepted grades.

Regulations 1 The Building Regulations 2000 (as amended) (England and Wales) In the opinion of the British Board of Agrément, the use of Formtex Controlled Permeability Formwork Liner is not subject to these Regulations. 2 The Building Standards (Scotland) Regulations 1990 (as amended) In the opinion of the BBA, the use of Formtex Controlled Permeability Formwork Liner is not subject to these Regulations. 3 The Building Regulations (Northern Ireland) 2000 In the opinion of the BBA, the use of Formtex Controlled Permeability Formwork Liner is not subject to these Regulations.

continued Readers are advised to check the validity of this Certificate by either referring to the BBA’s website (www.bbacerts.co.uk) or contacting the BBA direct (Telephone Hotline 01923 665400).

continued

• The product reduces the risk of cracks and micro cracks normally associated with the early drying of a concrete surface.

Electronic Copy

4 Construction (Design and Management) Regulations 1994 (as amended) Construction (Design and Management) Regulations (Northern Ireland) 1995 (as amended) Information in this Certificate may assist the client, planning supervisor, designer and contractors to address their obligations under these Regulations. 6 Delivery and site handling (6.1).

See section:

Confirmation of Danish Agrément No 2002/021 issued by ETA — Danmark A/S to the Certificate holder.

Technical Specification

Design Data

5 Description

7 General

5.1 Formtex is a controlled permeability formwork (CPF) liner that is tensioned over or glued to most conventional types of formwork.

7.1 Formtex Controlled Permeability Formwork Liner should be specified and used strictly in accordance with this Certificate and the Certificate holder’s instructions.

5.2 The product is a two-layer, non-woven polypropylene fabric. It has a weight of 250 gm–2 and thickness of 1.2 mm.

7.2 The Certificate holder should be consulted for advice on design, and on the suitability of any proposed admixtures.

5.3 The fabric is thermally bonded on one side to create a filter, and the non-thermally bonded side functions as a drainage layer. The pore size of the filter is designed to retain the cement particles while allowing water to pass through.

7.3 The product should be correctly tensioned in accordance with section 13 of this Certificate. 7.4 This Certificate covers the initial use of the product only, and not its re-use. 7.5 Some colour variation of the concrete surface may occur.

5.4 Fresh concrete is placed and vibrated as usual, and excess water and entrapped air are drained from the concrete surface by the liner. If the liner is left on the concrete, it can be used to assist with further curing.

8 Characteristic properties 8.1 When tested in accordance with EN 965 : 1995, the product had a mean weight of 250 gm–2 and a mean thickness of 1.2 mm. 8.2 When tested in accordance with ASTM D 4533 : 1991, the product had a mean tear strength of 250 N longitudinal and 200 N traverse. 8.3 When tested to the optical method, the product had a mean pore size of