Slow Set 85 Injection Epoxy
- Fine Cracks 

Component "A" (resin)

Specific Gravity               1.11
Viscosity                        600 cps.
Colour Lt.                       Lt. Yellow

Component "B" (hardener)

Specific Gravity             0.98
Viscosity                     100 cps.
Colour                         Amber

Specific Gravity             1.08
Viscosity                      250 cps.
Colour Lt.                     Lt. Amber
Solid by weight             100%
 

"A"                             80       78
"B"                             20       22

Pot Life 200 g. @ 25°C                 85 mins.
Pot Life 4 litres. @ 25°C               20 mins.
Tack free time @ 10°C/25°C         20/10 hrs.
Through cure  @ 10°C/25°C          60/30 hrs.
Cure time is considerably longer at colder temperatures.

Minimum Application Temperature
"Slow Set 85 Injection Epoxy - Fine Cracks" cures at temperatures down to 0°C.

Moisture Sensitivity
"Slow Set 85 Injection Epoxy - Fine Cracks" has good damp adhesion and good water displacement capabilities.

Physical Testing

Tensile strength                 44 MPa            (ASTM 638)
Compressive strength         89 MPa            (ASTM D695)
Flexural strength                48 MPa            (ASTM D790)

Surface Preparation
The area adjacent to the crack must be cleaned to obtain good adhesion. "Heavy Epoxy Paste - Regular Set" is used to seal the crack and the injection devices. "Heavy Epoxy Paste - Rapid Set 60" is faster curing bonder, where quick turnaround is important. These devices may be plastic packers, tees or ports, depending on the technique used. Plastic tees are placed on top of the crack. The placing of the injection devices is critical. Foreign material in a crack may be a major factor in the success of injection. It is usually possible to flush cracks to remove contaminants. A thorough study in this regard is always necessary.

Mixing & Application
"Slow Set 85 Injection Epoxy - Fine Cracks" can be injected using plural feed injection machines capable of dispensing at the required ratio by volume, pressure pot machines or single component injection pumps.  Grease guns can also be used.

1. After the crack has been prepared for the injection process, resin is pumped from one port (or plastic tee) to the next in sequence. On a vertical crack, start at the lowest injection device. If there is water in the crack, it must be expelled by the resin being injected and this phase must continue until clear, water-free resin is emerging from the next port or plastic tee.

2. The injection process must be continued until the entire crack is filled with resin.

3. On large projects, test samples of the resin being injected should be taken before, during and after the injection is complete. It is imperative that the injection process be continuously monitored to ensure that the resin is properly mixed and will cure satisfactorily. Core samples may be taken to verify the efficacy of the process.

Safety and Toxicity
Two-component epoxy systems are capable of producing severe injury to, or destruction of, skin and eye tissues. They are classified as corrosive for shipping purposes. Precautions must be taken to prevent prolonged or repeated skin contact and it is essential to protect the eyes from splashes. Protective clothing, rubber gloves and chemical goggles should be worn when working with these products. Some people become sensitized when working with epoxy resin systems. The sensitization may appear in the form of skin or respiratory reactions. Avoid breathing vapours, particularly if these products are used in a confined area. Face mask with respirator #1224 is usually adequate. Air supplied mask is suitable for use in confined areas.

Storage
Store in heated area and on pallets. Do not allow product to freeze. Shelf life in unopened containers is two years.

Packaging
Packaged in 4 litre units, 4 units per carton. Each container is clearly marked with product name, component designation ("A" or "B"), manufacturer's name, batch number and ratio of component mixtures.

Warranty
Manufacturer WARRANTS that the product conforms to its chemical description and is reasonably fit for the purpose stated on its Technical Bulletin when used in accordance with its directions. Manufacturer makes NO OTHER WARRANTY either expressed or implied. Buyer assumes all risk in handling.