Answers to frequently asked questions about UNIQUE® Highway DOT (HWY DOT) Fast Setting Concrete.
Here is where you can learn all about UNIQUE® high-strength, fast-setting concrete: Questions about preferred applications, placement limitations, curing process, packaging, shelf life, and much more. These are the answers to your questions.
What type of product is UNIQUE HWY DOT concrete mix?
UNIQUE Highway DOT High-Performance Fast Setting Concrete Mix is a blend of hydraulic cement, sand, 3/8″ stone (ASTM C-33), and performance enhancing additives.
What are the preferred applications for UNIQUE HWY DOT concrete mix?
Use UNIQUE HWY DOT concrete mix for repairing deep patches in concrete on roadways, bridge decks, sidewalks, utility cuts, parking garages, footings, loading docks, and industrial floors.
What is the coverage rate of UNIQUE HWY DOT concrete mix?
50 pounds of UNIQUE HWY DOT concrete mix yields approximately 0.44 cubic ft of finished product when mixed with 3.4 quarts of potable water.
How deep or shallow can UNIQUE HWY DOT concrete mix be used?
UNIQUE XHWY DOT concrete mix can be used from 2″ to 12″ deep when extended.
What are the placement limitations for UNIQUE HWY DOT concrete mix?
For overlay applications at least one section should be prepared to evaluate the suitability of the materials and procedures.
Do I need to add any curing agents or other additives to UNIQUE XP polymer repair mortar?
Do not use UNIQUE HWY DOT concrete mix on unsound concrete or like surfaces. Not intended for applications under 2″ deep. For shallower applications use UNIQUE® High Performance Fast Setting Repair Mortar.
What should I do prior to using UNIQUE HWY DOT concrete mix for an overlay?
For overlay applications at least one section should be prepared to evaluate the suitability of the materials and procedures.
What is the curing time for UNIQUE HWY DOT concrete mix?
UNIQUE HWY DOT concrete mix can be opened to foot traffic in 1 hour and vehicular traffic in 3 hours.
Do I need to add any curing agents or other additives to UNIQUE HWY DOT concrete mix?
All you need to do is just add UNIQUE HWY DOT concrete mix repair mortar to the pre-measured water.
How can I delay or speed up the set time for UNIQUE HWY DOT concrete mix?
You can extend the cure time of UNIQUE HWY DOT concrete mix repair mortar by using cold or ice cold water and speed up the set time by using warm or hot water.
What is the best way to cure the UNIQUE HWY DOT concrete mix?
Damp cure all UNIQUE HWY DOT concrete mix installations. Begin curing as soon as the surface has lost its moist sheen. Keep exposed surfaces wet for a minimum of 1 hour. When experiencing extended setting times, due to cold temperature or the use of retarder, longer cure times may be required. The objective of damp curing shall be to maintain the continuously wet surface until the product has achieved sufficient strength.
Do I need anything special to clean my tools or other items?
No, UNIQUE® concrete products are water soluble prior to drying. Clean container and tools with water prior to the material drying.
What are the compressive strengths of UNIQUE HWY DOT concrete mix?
1 hour strength is 2,500 psi. 1 day strength is 5,500 psi. 7 day strength is 6,900 psi. 28 day strength is 8,400 psi.
What is the shelf life for a pail of UNIQUE HWY DOT concrete mix?
Two years if stored in an unopened pail according to ACI Guidelines.
What type of packaging is available for UNIQUE HWY DOT concrete mix?
UNIQUE HWY DOT concrete mix is available in 50, 20 and 10 pound plastic pails and in 50 lb. poly lined paper bags by special order.
Features and Benefits
Fast Setting – High early strength, Open to foot traffic in 1 hour, open to vehicle traffic in 3 hours
Excellent Adhesion – To concrete surfaces
Durable – Freeze-thaw resistant, Sulfate resistant, Exceeds 300 freeze/thaw cycles
Versatile – Applicable to virtually every horizontal concrete application 2″ to 12″
UNIQUE® is a registered trademark of UNIQUE Paving Materials Corp.
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