Jointfill A2 prevents entry of water and other materials, it has good recovery properties and low temperature flexibility. Jointfill A2 is not recommended for overbanding due to its lack skid resistance, Jointgrip OB is recommended for this application due to its superior skid resistance properties.
- Carriageways
- Car parks
- Footways
Damaged joints must be repaired using an epoxy mortar approved by Colas. If necessary joints should also be treated by grit blasting. Joints and cracks should always be thoroughly cleaned and dried with a hot compressed air lance in order to remove all moisture and dirt. This process should be carried out immediately prior to the application of Jointfill A2. Concrete joints should be primed with CP Primer before applying Jointfill A2.
Jointfill A2 should be heated indirectly and agitated in a purpose-built sealant preheaterunit with thermostatic control. Ensuring that the temperature does not exceed 190°C. The heater unit should be air-jacketed or oil-jacketed. The materials should then be pumped in to the joint, or poured at temperatures between 170-190°C using a melter pourer or bucket with a 'V' lip, with the minimum loss of temperature. Joints should be sealed to a level of at least 3mm below the surface.
More thorough advice is given in BS2499-2:1992 Hot Applied Joint Sealant Systems for Concrete Pavements. Code of Practice for Application and Use of Joint Sealants.
Application Properties
| Pouring temperature | 170°C/190°C |
| Safe heating temperature | 185°C for 6 hours maximum. 190°C maximum temperature |
Weight of Jointfill A2 Sealant to fill 100m joint (kg)
| Depth of joint (mm) | Width of joint (mm)
|
| 15 | 20 | 25 | 30 | 35 | 40 |
| 20 | 36 | 48 | 60 | 72 | 84 | 96 |
| 25 | - | - | 75 | 90 | 105 | 120 |
| 30 | - | - | - | 108 | 126 | 144 |
| 35 | - | - | - | - | 147 | 168 |
| 40 | - | - | - | - | - | 192 |
Jointfill A2 is supplied in plastic lined paper sacks holding 20kg (nominal) of material. Remove paper and put in to heating equipment.
Keep in dry store under cover.
Jointfill A2 is manufactured on a purpose-built plant to an ISO 9001 quality system which covers all Colas manufactured products. Under this system all batches undergo rigorous QC testing before being released for use. If a BS EN14188- 1:2004 product is required see Jointfill N1.
| Test Name | Specification |
| Softening point (Ring and Ball) | Typically 70 - 90°C |
| Cone penetration (25°C, 150g) | 25 - 50mm |
| Flow resistance (Mould Method at 45°C) | <15% |
| Extension test (0°C, ASTM D1191) | Pass 3 cycles |
| Density | Typically 1.2g/cm3 at 25°C |
SAFETY HANDLING PRECAUTIONS (when hot)
- Wear suitable protective clothing (heat resistant gauntlet glove, overalls, protective footwear, face visor).
- DO NOT allow water to contact hot material.
- DO NOT exceed maximum safe heating temperature.
- If molten material contacts skin:
- DO NOT attempt to remove.
- Immerse affected area in cold running water for at least 10 minutes.
- Seek medical advice without delay.
This product is hazardous for transportation when carried at temperatures above 100°C.
For full safety information, please request the Jointfill A2 Safety Data Sheet 06 using the contact information at the back of this brochure.
