Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Advantages
- Cures rapidly for emergency repairs in high traffic areas
- Superior compressive, tensile and flexural strengths; withstands high levels of abrasion and impact loading
- Excellent bond to existing concrete
- Optimum flexibility to withstand vigorous thermal cycling
- Freeze thaw resistant
- Excellent resistance to acids and alkalies
- Exceptional ultraviolet light stability
- Can be extended with up to 20 pounds (9 kg) of 3/8" washed dry pea gravel or used neat
Applications & Uses
- Markets
- Applications
- Application Area
- Application Method
- Compatible Substrates & Surfaces
- Uses
- Rehabilitation of bridge decks, airport runways and expansion joints
- Cold weather patching
- Industrial and commercial concrete repair application where quick turnaround is important
- Chemical resistant patching applications such as in chemical / food processing or containment areas
- Areas where high strength patching is required such as loading docks, high traffic aisles, tipping floors or floors subjected to steel wheel traffic
- Directions surface preparation
Concrete must be free of coatings, dirt, oil or other contaminants. Concrete frost free and dry. The perimeter of the patch should be saw cut to a minimum depth of 1/2 inch. All loose and deteriorated concrete should be removed. Sandblast all exposed reinforcing steel to remove all rust.
- Mixing
Mix using a heavy duty 1/2" or larger drill equipped with a jiffler type mixing prop. Mix one complete unit at a time. Pour all of Part A Resin into a clean dry pail, add Part B Aggregate while mixing. Blend until all aggregate is coated and thoroughly wet out. Do not mix more than can be mixed and placed within 10 minutes at 70o F (21oC). For smaller quantities, mix 5 parts of Part B by volume to 1 part of Part A. If the Durapatch mMa is to be extended with pea gravel or if more than one unit at a time is to be mixed, a mortar mixer is recommended. Add Part A to the mixing vessel first. Blend the Part B while mixer continues to blend and add up to 20 pounds of clean dry pea gravel for each unit of Durapatch mMa. Mix for 1 to 2 minutes. The depth and width of the patch will determine how much pea gravel can be used. Contact ChemMasters for details.
If patching in freezers or if quicker set is desired, additional catalyst Benzoil Peroxide (BPO) and Accelerator can be added to the mix. Contact ChemMasters for dosing information or revised mixing instructions. When using additional Catalyst and Accelerator first add the Resin, second Aggregate with Catalyst, then additional Catalyst and if needed Accelerator last.
Dosing profile for use of
Accelerator, Catalyst @ x tempTemp °F Accelerator fl oz BPO Catalyst
Ounce (cups)40 0 4 oz (1/2 cup) 30 0.5 4 (1/2) 20 1 6 (3/4) 10 1 6 (3/4) 0 1.5 6 (3/4) - Applicaton
Use a mason's trowel or steel finishing trowel to place and compact mortar into voids to be filled. Deeper areas may be vibrated to properly consolidate the material. Larger ar-eas can be topped by spreading with a short pronged rake. Do not featheredge the material.
Caution must be taken due to the rapid setting time of ma-terial. Do not overwork the surface.- Cleanup
When operations are completed or interrupted for more than 15 minutes, the mixing vessel and application tools must be cleaned. Clean tools and equipment before mate-rial dries and sets with xylene, xylol or the Part A monomer of the Durapatch mMa kit. If the monomer is used for cleaning, it can be saved and used for the next mix or saved for future cleanings. Adding coarse aggregate to the mixer while cleaning aids in removing the polymer con-crete.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Bond Strength (7 days) | 4380.0 | psi | ASTM C881 |
| Compressive Strength (1 hour, 100°F) | 4580.0 | psi | ASTM C109 |
| Compressive Strength (1 hour, 19°F) | 4240 - 8030 | psi | ASTM C109 |
| Compressive Strength (24 hour, 70°F) | 5980 - 9510 | psi | ASTM C109 |
| Elongation | 15 - 20 | % | — |
| Flexural [7 days (extended)] | 31000.0 | psi | AASHTO T97 |
| Pot Life (70°F) | 10 - 15 | minutes | AASHTO T237 |
| Tensile Strength (7 days) | 2330.0 | psi | AASHTO T198 |
Regulatory & Compliance
- Certifications & Compliance
Technical Details & Test Data
- Technical Details
Yield per standard unit Neat 0.27 ft3 (0.0076 m3 )
Extended
(20 lbs pea gravel)0.39 ft3 (0.0110 m3)
Estimating Guide Coverage (neat) 13 ft2 at 1/4 inch
0.77 m2 per centimeterYield per standard unit:
Neat: 0.27 ft3 (0.0076m3)
Extended 20 lbs pea gravel 0.39 ft3 (0.0110 m3)- Limitations
- Durapatch mMa is exothermic, generating a large amount of heat when initially mixed. After mixing imme-diately pour all of the material into the area to be patched to dissipate the heat.
- It is important to use all of the Part A Resin and Part B Aggregate provided.
- Durapatch mMa is extremely fast setting. Substrate must be completely prepared and ready before material is mixed.
- Good ventilation of the repair area is recommended to aid in the thorough cure of Durapatch mMa.
Packaging & Availability
- Packaging
Packaging Product Number Kit F5370.05 35 lb unit Part A Resin
Part B Filler (aggregate/catalyst)2 x 945 ml
31 poundsF5320.xx Optional Additional Catalyst Consult tech service
F5380.xx Optional Accelerator Consult tech service
Storage & Handling
- Storage
Store factory sealed containers of unmixed ma-terial at 50° to 75°F temperatures away from direct sunlight and sources of heat. Temperatures in excess of 75°F cause premature aging of the material. Shelf life of properly stored material is one year from date of manufacture.