Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Features
- Structural grade epoxy for injection
- Can be tinted with Liquid Tints
Applications & Uses
- Markets
- Applications & Uses
Basic Uses
- Stone or concrete crack injection, patching and mending
- Bonding stone or hardened concrete to hardened concrete
- Bonding new concrete to existing concrete
- Anchor bolt adhesive
- Bonding stone and concrete to other construction materials
- Bonding stone to stone
- General purpose adhesive for wood, concrete, metal
- Uses with Small Long Nozzle
Limitations
Use on dry substrates. Use on oil, grease, and coating free substrates.
INSTALLATION
General Instructions ( If using cartridges, additional usage directions are available. See our information sheet labeled “ Cartridge use directions”.) See separate doweling, laminating, and patching instructions for more specific instructions. CSI format specifications are available.
Surface Preparation & Use
Use gloves, wear eye protection, and avoid skin contact. When grinding cured joints, wear a dust mask. Substrate to be bonded must be completely dry and dustfree. Mix only the amount of epoxy which can be used in 10 minutes. Avoid stressing joint before complete cure of epoxy. Mask areas which must be kept free of epoxy. Clean uncured epoxy from tools with toluene or xylene. Remove cured epoxy mechanically.
Mixing instructions
- All materials should be at or above 55°F. Combine the two ingredients at the following volume ratio: two parts A-028 to one part B-405. Mix thoroughly- ingredients must be blended homogeneously for proper cure.
- Mix Ratio = 2:1by volume
- Set Timeis three hours at seventy five degree fahrenheit
- Flow Rate -5900 Centipose
Temperature dependency
Temperature will affect the working properties of the material. Approximately every 15°F results in doubling the speed of cure. Therefore, at 90°F set time is cut in half, at 60°F the set time is doubled. Do not use on a substrate at a temp. below 55°F.
Coverage
Approximately 30 square feet per gallon when applied at 50 mils (1/16th of an inch). 231 cubic inches per gallon.
MAINTENANCE
Designed for application in areas inaccessible to maintenance procedures.
Applications
- Bonding new concrete to existing concrete
- Injection for horizontal wider cracks
- Vertical cracks need to be capped before injection
Properties
- Typical Properties
- Cured Properties
| Value | Units | Test Method / Conditions | |
| Mix Ratio | 2 parts A-028 to 1 Part B-405 by volume 5900 centipoise | — | — |
| Value | Units | Test Method / Conditions | |
| Initial Set Time (75°F) | 3.0 | hours | — |
| Full Cure Time (75°F) | max. 24 | hours | — |
| Tensile Strength | 9469.0 | psi | ASTM D-638 |
| Tensile Modulus | 228000.0 | psi | ASTM D-638 |
| Tensile Elongation at Break | 5.5 | % | ASTM D-638 |
| Compressive Strength | 13010.0 | psi | ASTM D-695 |
| Compressive Modulus | 327000.0 | psi | ASTM D-695 |
| Flexural Strength | 17180.0 | psi | ASTM D-790 |
| Flexural Modulus | 498000.0 | psi | ASTM D-790 |
| Hardness | 80.0 | Shore D | ASTM D-2240 |
| Heat Distortion Temperature | 135.0 | °F | ASTM D-648 |
Regulatory & Compliance
- Regulatory & Compliance
Applicable Standards: Meets ASTM C-881, Types I, II, IV, V; Class C, Grade 2.
Packaging & Availability
- Packaging Type
- Packaging
Bonstone® Crack Repair 28 available in quarts, gallons, and 5 gallon pails, and 450ml cartridges.
Storage & Handling
- Pot Life (75°F)
- 80.0
- Storage
Shelf life is approximately one year if kept in unopened cans in a dry area at 75°F.
If Bonstone® Crack Repair 28 is exposed to below room temperature conditions for extended periods of time, it may crystallize, giving it a stiff, grainy consistency. The product must be reconstituted before use by heating it to 150°F degrees. Stir until it becomes a homogeneous liquid.