1725

27

03/

2009

www.sika.com

Our most current General Sales Conditions shall apply. Please consult themost current local Product Data Sheet prior to any use.

Sika is a globally active company supplying the specialty chemicals markets. It is a leader in processing materials used in sealing, bonding, damping, reinforcing and protecting load-bearing structures in construction (buildings and infrastructure construction) and in industry (vehicle, building component and equipment production).

Sika’s product lines feature high-quality concrete admixtures, specialty mortars, sealants and adhesives, damping and reinforcing materials, structural strengthening systems, industrial flooring and membranes. Subsidiaries in more than 70 countries worldwide and approximately 12,000 employees link customers directly to Sika.

SikaWorldwide

Ind

ust

ry

Reaction to Fire for

Construction Products

Reaction to Fire for Construction Products_32_Reaction to Fire for Construction Products

‘Euroclass’ classifi cation system

The new system consists of 7 main classes and 2 sub-classes

Main classes: A1, A2, B, C, D, E and F, where A1 is the best classifi cation. The fi re-performance is used to characterise the product in one of the main classes.

Sub-classes: Smoke production and fl aming droplets

Reaction to fi re

Classes A1 and A2 will have very limited or limited contribution to a fi re. Classes B, C, D, E and F have increasing contribution to a fi re.

Smoke production

The fi rst sub-class describes the smoke production when burning the product. Three levels are available: s1, s2 and s3, where s1 is the lowest smoke.

Flaming droplets

The second sub-class describes whether fl aming droplets are created or not. Three classes are available: d0, d1 and d2, where d0 has no droplets created.

Date of availabilityAutumn 2007

Start of co-existence1st January 2009

Date of withdrawalOctober 2010

time scale

National standards

European standards

15 months 21 months

What is this?

– Individual building regulations throughout Europe are being harmo-nised into the ‘Euroclass’ classifi cation system.

– Part of this includes reaction to fi re for construction products.

– Once implemented these will supersede all existing national requirements.

– All building materials will then have to be classifi ed within the categories A1 – F for reaction to fi re.

When will it come into force?

A1 A2 B C D E F

very limited

limited

F

d0 d1 d2

nodropletscreated

s1 s2 s3

Which tests are needed?

Euro-class

Non-combustibility (ISO 1182)

Single Burning Item(EN 13823)

Single-fl ame source (ISO 11925-2)

Calorifi c value(ISO 1716)

Smoke Production Flaming droplets

A1 N/A N/A N/A N/A

A2 N/A N/A

B N/A N/A

C N/A N/A

D N/A N/A

E N/A N/A N/A N/A

F N/A N/A N/A N/A N/A N/A

A2 – probably the highest class achievable for a bonded panel

– The calorifi c values for all component materials of the panel need to be determined.– These must meet the levels set out in the requirement.– The calorifi c value of the adhesive sets the maximum allowable

coat weight.

– The adhesive application machine must be capable of applying adhesive accurately and be able to document this. – Finished panels are then tested at an approved test house to

determine the total heat released as well as the smoke and fl aming droplets produced.

– A rating will then be given to the panel based on the results.

How can I achieve A2 for my panels?

What can Sika do for you?

Through our products, services and know-how, we can help you achieve the optimum performance. A2 s1 d0

Best recommended Sika product Calorifi c Value (ISO 1716) Max. allowable Coatweight

SikaForce®-7700 App. 34 MJ/kg 108 g/m2

SikaForce®-7746 App. 16 MJ/kg 230 g/m2

SikaForce®-7742 App. 14 MJ/kg 263 g/m2

SikaForce®-7740 App. 11 MJ/kg 334 g/m2

A sandwich panel consists of substantial components (Steel and core material) – and non-substantial components (Coating, primer and adhesive). There are calorifi c demands for each individual panel component.