FARCOFLEX HR2

Highly Resistant Two Component Joint Sealant

Product Description

FARCOFLEX HR-2 is a two component polyurethane joint sealant which is produced in two types:

Pouring: recommended for horizontal expansion joints.
Gun grade: recommended for horizontal and vertical expansion joints. • After mixing and application, it chemically cures and an elastic sealant with outstanding resistance to deterioration due to weathering, ozone, ultra-violet light and chemical attack by chemicals present in industrial atmospheres will be gained

HR-2 forms an absolute water-tight seal in reservoirs and sewage works. The maternal has excellent resistance to biodegradation due to bacterial attack in sewage tanks or reservoirs.

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Product Description

FARCOFLEX HR-2 is a two component polyurethane joint sealant which is produced in two types:

Pouring: recommended for horizontal expansion joints.
Gun grade: recommended for horizontal and vertical expansion joints. • After mixing and application, it chemically cures and an elastic sealant with outstanding resistance to deterioration due to weathering, ozone, ultra-violet light and chemical attack by chemicals present in industrial atmospheres will be gained

HR-2 forms an absolute water-tight seal in reservoirs and sewage works. The maternal has excellent resistance to biodegradation due to bacterial attack in sewage tanks or reservoirs.

Standard Compliance

BS 4254 ASTM C 494-02 TYPE M CLASS 25 TT-S- 00227 E ISO 11600 F – 25 LM

Technical Data

Base polyurethane

Consistency Pouring and Gun grade

Specific gravity (Kg/lit) A: 1.55 ± 0.03 , B: 1.07 ± 0.03 , A+B: 1.4 ± 0.03

Mixing ratio 3: 1

Pot life (20°c) 2 to 4 hours

Shore A(hardness) 30 ± 5

Elongation >700%

Tensile strength >2.5 Mpa

Application

Uses

Concrete pavement road and industrial floors
Airport runways
Joints in crude sewage, sewage sludge and digestion tanks
Marine structures

Advantages

High abrasion resistance
Resistant to Bio – Degradation
Recommended for immersion joints
Permanent seal of concrete joints and high resistance to weathering, Ozone and UV- rags

Method of use

Surface preparation

Concrete surfaces: must be clean and dry. Wire brush thoroughly and remove dust and contaminants.
Metal surfaces: remove any corrosion or mill scale by grit or shot blast. Degrease the surfaces with cloth soaked in oil free cleaning solvent.
Wood substrate: must be clean and dry, cut back or abrade where necessary to sound timber.

Priming

A single coat of primer should be applied by brush. The primer must be allowed to dry for a minimum period of one hour before applying HR-2 should be applied within 24 hours of priming.

Mixing

Pour entire content of part B into part A pail and mix for 3 to 5 minutes, using a paddle fitted to a 500 r.p.m electric drill.
Do not subdivide the components
Failure to completely disperse curing agent throughout the base compound will result in uncured sealant.

Application

HR-2 should be used immediately once mixed.
Gun with nozzles can be used for easy application
Tool the sealant with light pressure to spread the material against the joint surfaces, this operation should be made with spatula soaked in a soapy water.
For good performance, it is essential that the sealant is only bonded to the two facing sides of the joint, to achieve this, install a back up material (closed cell polyethylene or open cell polyurethane foam )
Application temperature is between 4 to 40°c.

Cleaning

Clean uncured materials with solvent and cured materials mechanically

Coverage

Depth of joint(mm)	Width of joint (mm) 10 15 20 25 30
10	10m 6.7m 5 4 3.33
15	– 4.45 3.33 2.67 2.33
20	– – 2.5 2 1.67
25	– – – 1.6 1.33

Joint Dimensions

Joints width with minimum 5 mm to max 50 mm
Joints with cyclic movements should have width: depth ratio of 2:1
Sealant depth shall not exceed joint width

Minimum sealant depth recommend for :
Metals and glass is 5 mm, all porous surfaces are 10mm, joints exposed to traffic and hydrostatic pressures are 20mm.