Sika® Polysulphide GG
Sika® Polysulphide GG is a cross linking polysulphide based elastic sealant for vertical and horizontal expansion joints.
Suitable for use in hot and tropical climatic conditions.
- Easy to use
- Economical
- Excellent adhesion with many materials
- Non- sag in vertical and overhead joints
- Good chemical resistance
- Permanently elastic
- Good weather resistance
Usage
It is used in both vertical and horizontal expansion joints in many types of buildings and civil engineering constructions such as:- Retaining walls
- Underpasses and tunnels
- Reservoirs
- Precast concrete elements
- Bridges
- High and low rise buildings and
- Wherever a permanently flexible seal is required
Advantages
- Easy to use
- Economical
- Excellent adhesion with many materials
- Non- sag in vertical and overhead joints
- Good chemical resistance
- Permanently elastic
- Good weather resistance
Packaging
Comp. A: ~ 2.37 L + Comp. B: ~ 0.13 L
Colour
Paste, grey
Product Details
SUSTAINABILITY
- VOC content <35 g/L (less water) US EPA 24
APPROVALS / CERTIFICATES
- Conforms to: BS 4254 - 1983
- Conforms to BS/EN ISO 11600 : 2003
- Complies with ASTM C920, Type M, Grade NS, Class 25
- Conforms to: TT-S00227 E (COM-NBS) - 3 Type ll
Composition
Cross linking polysulphide
Shelf life
Sika® Polysulphide GG has a shelf life of 12 months from the date of production, if it is stored in undamaged, original, sealed packaging, and if the storage conditions are met.
Storage conditions
Sika® Polysulphide GG shall be stored in dry conditons, where it is protected from direct sunlight and at temperatures between 5 °C and 30 °C.
Density
~1.58 kg/l
Solid content
100 %
Shore A hardness
~25 | (ASTM C 661) |
Movement capability
+/-25 % | (ASTM C 719) |
Service temperature
-20 °C min. / +80 °C max.
Joint design
Joint Configuration
Minimum joint width: 6 mm
Maximum Joint width: 50 mm
Width: Depth ratio
The joint width must be designed to suit the movement capability of the sealant. Joints expected to movement a width to depth ratio of approximately 2 : 1 must be maintained. For butt joint the width to depth ratio should be 1 : 1.
Minimum joint depth is recommended:
- 6 mm for non-porous surfaces
- 8 mm for porous surfaces
- 20 mm for trafficked joints and joints that are exposed to hydrostatic pressure
At chamfered elements it shall not fill the chamfer with sealant.
Application
Mixing ratio
Part A : Part B = 96 : 4 (by weight)
Ambient air temperature
+5 °C min. / +50 °C max.
Substrate temperature
+5 °C min. / +50 °C max.
Substrate moisture content
Dry joint with sound concrete edges. For joints under wet conditions, use Sika®-Primer-PS or alternatively Sika® Primer 3N
Pot Life
2 h at 25 °C
Curing time
1 week
SUBSTRATE PREPARATION
All surfaces must be clean, dry and free from any loosely adhering particles.
Check the joints edges for soundness and if found weak cut recess and fill up with suitable repair mortar (Consult Sika Technical Department). Correct joint depth can be established by inserting closed cell polyethylene backing rod tightly into the joint. When the joints have been filled with fiber filled board, this must be raked back to the required depth. Use bond breaker tape over the backer material. Protect surfaces with masking tape.
PRIMING
Sika® Primer PS or alternatively Sika® Primer-3N should be used as a primer only on two sides of the joint. The flash off time is minimum 30 minutes and maximum 3 hours.
MIXING
The product is packed in a 2.5 litre tin, containing the base and curing agent, ready to mix in the appropriate ratios. Mix the product thoroughly with a mixing paddle fitted to an electric hand drill not exceeding 500 rpm to avoid entrapping air. Mix for approximately 5 minutes until a smooth, even consistency is achieved.
CLEANING OF EQUIPMENT
Clean all tools and application equipment with Sika® Colma Cleaner immediately after use. Hardened / cured material can only be mechanically removed.