Knowde Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Benefits / Features
- Use from featheredge to 2" deep.
- Excellent adhesion to concrete surfaces.
- Non-shrink/Volume stable.
- Abrasion resistant.
- Open to foot traffic in 4-6 hours.
- Open to vehicle traffic in 8-12 hours.
- Increased freeze-thaw durability and resistance to deicing salts.
- Compatible with the thermal expansion of concrete.
Applications & Uses
- Markets
- Applications
- Application Area
- Application Method
- Compatible Substrates & Surfaces
- Recommended Uses
Use to repair roadways, industrial floors, loading docks, parking garages, curbs, utility cuts, pre-cast & sidewalks.
- Limitations
Not intended for applications on unsound concrete or like surfaces. Not recommended for applications over 2" deep. For deeper applications use UNIQUE FLEXICRETE® 25 Polymer Modified Concrete Mix or contact UNIQUE’s Technical Department. For overlay applications at least one test section should be prepared to evaluate the suitability of the materials and procedures.
- Surface Determination
Why has the concrete failed? Is there presence of salt, freezing damage, drainage water, deteriorated control or expansion joints? The surface area to be repaired should be in solid condition.
- Surface Preparation
The area to be repaired should be checked with a chipping hammer to ensure the exposed concrete is not scaling. If a section of concrete is deemed to be questionable, complete removal and replacement should be considered. Patching over control or expansion joints is not recommended. The quality and durability of your repair depends on the surface to be patched. Remove loose concrete, mineral salts, grease and paint that will limit bonding performance. Mineral salt should be treated with an acid wash to ensure its removal. Exposed rebar should be free of rust or scaling then protected with a zinc oxide coating to reduce the probability of future rust development. Wet the repair area with water leaving it Saturated Surface Dry (SSD) during the repair. Any standing water should be removed.
- For Best Results
For best results the water temperature should be between 55ºF and 75ºF.
- Warmer water will accelerate the set of the material.
- Cooler water will slow the set of the material.
- Mixing
Organize work so all personnel and equipment are in place before mixing. Roll or shake the sealed pail of UNIQUE FLEXICRETE XP polymer modified mortar to ensure the product is thoroughly mixed prior to use. Use clean, potable water. The use of a mortar mixer or variable speed drill is recommended. UNIQUE FLEXICRETE XP polymer modified mortar may be mixed using the percentages of water as shown in the table below:
Water UNIQUE FLEXICRETE® XP
Polymer Modified Mortar25 - 28 oz. 10# 50 - 56 oz. 20# 3.9 - 4.4 qt. 50# Use less water to achieve higher strengths. Do not exceed the recommended water percentages.
Place the desired quantity of water into the mixing container. While the mixer is running add the material. Mix for the minimum amount of time required to achieve a lumpfree, uniform consistency (usually 1 to 3 minutes). Let material false set for 1 to 3 minutes to ensure the polymers have had time to hydrate. Re-blend material for 2 to 3 minutes to ensure a uniform consistency.
- Placement
Make sure surface is SSD and any standing water has been removed. UNIQUE FLEXICRETE XP polymer mortar may be placed using traditional methods from featheredge to 2". Place and consolidate the material quickly to allow for maximum finishing time. UNIQUE FLEXICRETE XP polymer mortar may be troweled, floated or broom finished.
- Coverage
10 pounds of UNIQUE FLEXICRETE XP polymer modified mortar yields approximately 0.11 cubic foot of finished product when mixed with 28 ounces of potable water. Material will yield about 10 pounds per square foot per 1" thick.
- Clean Up
Water soluble prior to drying. Clean container and tools prior to material drying.
- Curing
Damp cure all 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.
- Temperature
Warm environmental and materials temperatures will reduce the working time. To compensate for warm temperatures, keep material cool and use chilled water. Temperatures below 60ºF will decrease the rate of strength gain. UNIQUE FLEXICRETE XP polymer modified mortar should not be applied if surface temperature is below 45ºF or above 90ºF.
Technical Details & Test Data
- Testing Results
Fresh test data (ASTM C1473 & ASTM C403):
Flow (ASTM C 1473) >150% Initial Time of Set (ASTM C403) 316 Final Time of Set (ASTM C403) 428 Min. Compressive test data (ASTM C109):
Cube
IdentificationTest Date (Age) Area, in.2 Load, lb. Compressive
Strength, psiAverage
Compressive
Strength, psiH-1 June 26, 2015
(1 day)4.1 4520 1102 1158
H-2 4.04 4720 1168 H-3 4.03 4850 1230 H-4 July 2, 2015
(7 days)4.06 11460 2823 2810
H-5 3.98 11520 2894 H-6 4.06 10990 2707 H-7 July 23, 2015
(28 days)4.03 14920 3702 3520
H-8 4.03 13270 3293 H-9 4.03 14350 3561 H-10 September 23, 2015
(90 days)6 17920 4414 4320
H-11 4.04 16880 4178 H-12 4.06 17690 4357 Slant shear test data (ASTM C882):
Cylinder
IdentificationTest Date
(Age)Ellipitcal
Area, in.2Load, lb. Compressive
Strength, psiAverage Compressive
Strength, psiA June 26, 2015
(1 day)14.13 6000 425 500
B 14.13 5200 368 C 14.13 10000 707 D July 2, 2015
(7 days)14.13 26080 1846 1650
E 14.13 24740 1751 F 14.13 19040 1347 Flexural strength test data (ASTM C293 - Modified):
Specimen
IdentificationTest Date
(Age)Load, lb. Flexural
Strength, psiAverage Flexural
Strength, psiA June 26, 2015
(1 day)130 585 540
B 110 495 C 120 540 D July 2, 2015
(7 days)180 810 765
E 150 675 F 180 810 Length change results for continous wet cure, reported as a percentage of the original length (ASTM C157):
Age Bar 1 Bar 2 Average 28 days +0.002 +0.002 +0.002 56 days +0.004 +0.004 +0.005 Notes: The bars were demolded at 24 hours and the initial comparator reading was taken. The bars were then cured in lime water at 73±3°F until the age of 28 days. At the age of 28 days, the bars were then air dried in a room maintained at a temperature of 73±3°F during testing.
Length change results for wet plus drycure, reported as a percentage of the original length (ASTM C157):
Age Bar 1 Bar 2 Bar 3 Average 28 days (wet) +0.005 +0.005 +0.005 +0.005 56 days (28 days dry) -0.105 -0.108 -0.108 -0.107 Notes: The bars were demolded at 24 hours and the initial comparator reading was taken. The bars were then cured in lime water at 73±3°F until the age of 28 days. At the age of 28 days, the bars were then air dried in a room maintained at a temperature of 73±3°F and a relative humidity of 50±4%.
Safety & Health
- Caution
This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive problems. This product contains free Silica. Any inhalation of dust may be harmful to your health. Excessive inhalation causes the risk of serious respiratory disease (SILICOSIS) and susceptibility to other possibly fatal disease. Some medical studies suggest a possible association between crystalline silica and incidence of cancer in humans. Take appropriate protective measure to avoid breathing dust. Use a NIOSH approved respirator for silica dust. For further information, please refer to the Safety Data Sheet.
Injurious to eyes and causes skin irritation. Contains Portland Cement and Lime. Avoid eye contact or prolonged contact with skin. Wash thoroughly after handling. In case of eye contact, flush with plenty of water for at least 15 minutes. Consult a physician immediately if irritation persists. Keep out of reach of children. Do not take internally.
Packaging & Availability
- Freight
Class 55
- Packaging
Item # Description 52-00026 UNIQUE FLEXICRETE® XP Polymer
Modified Repair Mortar Pail 1-gal (10#)120 - 10# pails per stretch wrapped pallet
3360 - 10# pails per truckload52-00027 UNIQUE FLEXICRETE® XP Polymer
Modified Repair Mortar Pail 2-gal (20#)60 - 20# pails per stretch wrapped pallet
1680 - 20# pails per truckload52-00023 UNIQUE FLEXICRETE® XP Polymer
Modified Repair Mortar Pail 5-gal (50#)36 - 50# pails per stretch wrapped pallet
828 - 50# pails per truckloadSpecial UNIQUE FLEXICRETE® XP Polymer
Modified Repair Mortar Poly Lined
Bag (50#)60 - 50# bags per stretch wrapped pallet
840 - 50# bags per truckload
Minimum order 2,000 bagsTruckload quantities are typical but may vary depending on destination, truck tare weight and/or trailer type (box van, flat bed, rail shipments or ocean freight container).
Storage & Handling
- Shelf Life
Two years if stored in an unopened pail according to ACI Guidelines.