Knowde Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
- Product Families
- Composition
A proprietary mixture of special cements, silica fume, thermoplastic fibers, and modifiers.
Features & Benefits
- Ready-to-Use Product Features
- Features & Benefits
- Highly impermiable
- Spin cast application
- Waterproofs and seals
- High early and ultimate strength
- High build
- Non shrink/crack resistant
- Structural reinforcement
- High flexural and bond strength
Applications & Uses
- Markets
- Coverage
Approximately 10 square feet (ft²) per bag at 1/2 inch. Allowances should be made for waste.
- Surface Preparation
Generally, pipe surfaces are prepared by Low Pressure Water Cleaning (up to 5,000 psi) or High-Pressure Water Cleaning (5,000-10,000 psi) to remove all loose material, unsound concrete, contaminants, dirt, debris, and/or deteriorated or loose metal. All material should be flushed from the pipe invert and any active leaks stopped. All large voids should be filled prior to the application of MAINSTAY ML-72HP. Saturate all concrete surfaces thoroughly with clean water and allow to surface dry just prior to the application of MAINSTAY ML-72HP.
- Mixing
Add up to 1.0 gallon of clean water per 50-lb bag. Mix thoroughly using a gasoline, electric, or hydraulically powered paddle-type mixer. Additional water, up to 1 pint per bag MAXIMUM, may be added to increase workability. However, physical strengths will be reduced accordingly. Trial batches and testing concrete materials are recommended before construction start up.
- Working Time
Approximately 30 minutes at 80° F. The working time will be extended at lower temperatures and shortened when higher.
- Application
MAINSTAY ML-72HP is designed specifically to be applied using spincasting equipment such as the Mainstay Horizontal Spinner and Cable Puller. Application thicknesses up to 5" in a single or multiple passes are possible depending on the amount of water added, the condition of the surfaces being treated, and jobsite conditions. A variety of piston, systolic, and rotor/ stator pumps may be used depending on job requirements and desired production rates.
- Finishing
If finishing is desired, MAINSTAY ML-72HP can be finished using a steel trowel, wood float, sponge float, broom, or brush. If MAINSTAY ML72HP is to be topcoated, it is recommended that the surface be finished to a smooth, somewhat grainy texture using a sponge or wood float.
- Cure Time
When placed under fast drying conditions or as required by project specificaions, MAINSTAY ML-72HP may be damp cured or treated with a curing compound per ASTM C-309. Pipe ends should be closed to limit air movement during curing.
- Clean Up
Clean equipment and tools with clean tap water.
- Recommended For
The rehabilitation of concrete structures containing aggressive chemicals in industrial environments, such as:
- Trenches
- Sumps
- Floors
- Clarifiers
- Scrubbers
- Digesters
- Paper mills
- Chemical processing plants
- Mixing Ratio
Mix components at a volume ratio of 2 parts A to 1 part B. Whenever possible, avoid mixing partial kits.
- Yield
0.42 cubic feet (ft³) per 50-pound (lb) bag when mixed correctly.
- Thickness
Depends on the application, 1" is generally sufficient for smoothing concrete that has experienced surface attack (exposed aggregate) and minimum thickness is usually 1/2".
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Compressive Strength (24 Hours ) | min. 3000 | psi | ASTM C-109 |
| Compressive Strength (28 Days) | min. 10000 | psi | ASTM C-109 |
| Flexural Strength (24 Hours) | min. 500 | psi | ASTM C-293 |
| Flexural Strength (28 Days) | min. 1500 | psi | ASTM C-293 |
| Shrinkage (28 Days, 90%RH) | 0.0 | % | ASTM C-596 |
| Freeze/Thaw (300 Cycles) | No Visible Damage | - | ASTM C-666 |
| Tensile Strength (28 Days) | min. 850 | psi | ASTM C-496 |
| Bond Strength (28 Days) | min. 3000 | psi | ASTM C-882 |
| Modulus of Elasticity (28 Days) | 4510000.0 | psi | ASTM C-469 |
| Rapid Chloride Permeability (28 Days) | Very Low | - | ASTM C-1202 |
Safety & Health
- Safety
- Contains epoxy resins that may cause eye, skin, respiratory, or nervous system sensitization
- Adequate health and safety precautions should be observed during all storage, handling, use, and drying periods
- Do not take internally. If swallowed, call a physician immediately
- Keep away from open flame, and keep containers tightly closed when not in use
- Keep out of reach of children
- Component A is flammable, keep away from children
Packaging & Availability
- Packaging
Normally stocked in 50-lb bags. Also available in 2,000-lb and 3,000-lb bulk sacks.
Storage & Handling
- Shel Life
- 1 Year
- Storage
- Check containers for damage, and verify quantities before accepting shipments. Store MAINSTAY ML-72HP in a cool, dry place.