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Sika® Polysulphide PG
Sika® Polysulphide PG is a cross linking polysulphide based elastic sealant for horizontal expansion joints. Suitable for use in hot and tropical climatic conditions.
- Easy to use
- Economical
- Excellent adhesion with many materials
- Good chemical resistance
- Permanently elastic
- Good weather resistance
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Usage
It is used in horizontal joints in many types of buildings and civil engineering constructions such as:- Expansion joints in floors
- PQC joints, Precast concrete elements
- Bridge deck joints
- Reservoirs
- Vacuum dewatered floor joints/groove sealing, crack repairing
- Horizontal trafficable joints, airport runways, car park, roads and culverts
- Wherever a permanently flexible horizontal seal is required
Advantages
- Easy to use
- Economical
- Excellent adhesion with many materials
- Good chemical resistance
- Permanently elastic
- Good weather resistance
Packaging
4 L | (Comp. A + Comp. B) | |
18 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 P, Class 25
Composition
Cross linking polysulphide
Shelf life
Sika® Polysulphide PG 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 PG shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +5 °C and +30 °C
Density
~1.60 kg/l
Solid content
100 %
Shore A Hardness
~20 | (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:
- 6mm for non-porous surfaces
- 8mm for porous surfaces
- 20mm 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 = 95 : 5 (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.
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® Polysulphide PG 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
Add Component B into the bigger Component A pail. Mix the product thoroughly with a mixing paddle fitted to an electric hand drill (4 L packing) and hand held paint or grout electric mixer (18 L packing) 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.