SureFlex-CJ
SureFlex-CJ
Rapid-curing, Semi-rigid Polyurea control joint filler
Description
SureFlex CJ is a 100% solids, two-component, UV resistant, semi-rigid, rapid-curing, polyurea for filling control and construction joints in heavy duty industrial concrete floors. SureFlex CJ allows
for joints to be shaved quickly for fast turnaround. SureFlex CJ has been designed for use in compliance with ACI 302, section 4.10 recommendations for joint fillers used in saw cut/control joints with a Shore A Durometer of 85. SureFlex CJ can also be used for the repair of damaged or spalled joint nosing and cracks.
Features / Benefits
• Easy 1 to 1 ratio, pourable/pumpable consistency
• UV Resistant, Colorfast
• High elongation (200%) to resist tearing due to excessive movement • Semi-rigid flexibility that does not weld slabs together or become brittle with age
• Optimum hardness (Shore A = 85) to transfer wheel loads while allowing moderate movement
• Can be applied and cures down to –20o F
• Quicker turnaround/less downtime than epoxy joint fillers
Application
Joint preparation: Joints must be clean, dry and free of curing compound, densifiers, sealers and any other foreign substances.
To remove the above, use a vacuum equipped, dry cut abrasive blade and oil-free compressed air to remove any water or dust prior to applying SureFlex CJ. Per ACI and PCA guidelines, SureFlex CJ should be installed full depth in sawcut control joints and a minimum of 2” in joints greater than 2” deep. Do not use compressible backer rod to reduce volume in saw cut control joints. SureFlex CJ should be applied to a minimum depth of 1”. In construction joints (un-cut full slab depth), dry sand or backer rod can be used to reduce volume provided a minimum 2” depth is maintained.
Mixing instructions: Temperature of SureFlex CJ must be 50oF
or above at the time of mixing. Stir/shake each component before dispensing. Use a 1:1 low pressure duplex/plural component metered pump with a 3/8” x 24” element static mixer.
Application: When using a cartridge or a plural component pump, dispense mixed material into a waste container to assure a uniform color and a consistent 1:1 ratio. Then dispense properly mixed SureFlex CJ into the prepared joint. Joints should be overfilled and allowed to cure for approximately 1 hour and up to 24 hours before shaving flush with a floor razor scraper. The cut joint must be flush with the floor to effectively transfer wheel loads. Stain Protection since SureFlex CJ sets so quickly, the potential for any overfill to stain the sides of the joint is unlikely. In applications where aesthetic and decorative or architectural finishes are critical, we recommended using a guard as a stain protectant and also to facilitate shaving.
If SureFlex CJ is installed in a floor before maximum shrinkage
has occurred, a crack may appear either adhesively or cohesively. This should not be considered a failure of the SureFlex CJ, which
will continue to support the joint edge and transfer wheel loads. To remedy the situation, clean out the crack, wipe clean with a Solvent and refill with SureFlex CJ.
Cleaning
Tools and Equipment: Uncured material can be removed with solvent. Dispose of in accordance with local, state, and federal disposal regulations. Mechanical removal is necessary for cured material.
Specifications / Compliances
• Accepted for use in USDA, FDA, and CFIA regulated facilities – Authorized for use in federally inspected meat & poultry plants. • Complies with ACI 302 guidelines and PCA Concrete Floors on
Ground for “Floor Joint Filler”
• 100% Solids contains no VOC’s, LEED compliant.fillers
Technical Data Sheet
Packaging
22 fl oz cartridges and 10 gallon units
Shelf Life
Store SureFlex CJ in its original containers and keep tightly closed between 55-90o F. Do not allow the accumulation of water, dirt or other contaminants. The shelf life of properly stored SureFlex CJ is one year from date of manufacture.
www.surebuilt-usa.com
Call 708-493-9569
Typical Test Data
Color (mixed): Dovetail Gray Mix Ratio: 1 to 1 by volume
Gel Time at 75oF: 30 seconds Tack-free at 75oF: 3-4 minutes Shave Time at 75oF: 20-25 mins Return to Traffic at 75oF: 1 hour Adhesion to Concrete: 275 psi Tensile ASTM D 638: 1225 psi Shore A Hardness: 85
Shore D Hardness: 30
Limitations / Precautions
1” 100 Ln/ft
2” 50 Ln/ft
76 Ln/ft
38 Ln/ft
50 Ln/ft
25 Ln/ft
36 Ln/ft
18 Ln/ft
Coverage Rate Lineal feet per gallon: Theoretical
Depth (Inches)
3/16”
WIDTH
1/4” 3/8”
1/2”
Joint should be clean and dry for optimum adhesion. Cold temperatures will delay set, cure, and shaving time. To facilitate applications in cold temperatures, condition the product to 75°F and if possible warm the area to be repaired to help accelerate set/cure time. Always test a small amount of SureFlex CJ to verify that the product has been thoroughly mixed and will harden properly before proceeding. RapidFlex CJ is designed for low adhesive strength to encourage separation when exposed to excessive concrete slab shrinkage. SureFlex CJ should not be installed on new concrete floors until maximum shrinkage has occurred. ACI 302 recommends a minimum of 30 days and preferably 90 days for all semi-rigid polyureas and epoxies. The longer the time period allowed for curing the concrete prior to installation of SureFlex CJ, the better the performance. SureFlex CJ should not be installed until the building is under permanent temperature control. Do not thin SureFlex CJ with solvents. Do not use exterior or as an expansion joint sealant. Although UV resistant SureFlex CJ may slightly discolor if exposed to strong and constant sources of ultra-violet radiation. Keep away from food and food containers.
NOTICE-READ CAREFULLY CONDITIONS OF SALE
SureBuilt offers this product for sale subject to and limited by the warranty which may only be varied by written agreement of a duly authorized corporate officer of SureBuilt. No other representative of or for SureBuilt is authorized to grant any warranty or to waive limitation of liability set forth below.
WARRANTY LIMITATION SureBuilt warrants this product to be free of manufacturing defects. If the product when purchased was defective and was within use period indicated on container or carton, when used, SureBuilt will replace the defective product with new product without charge to the purchaser. SureBuilt makes no other warranty, either expressed or implied, concerning this product. There is no warranty of merchantability. NO CLAIM OF ANY KIND SHALL BE GREATER THAN THE PURCHASE PRICE OF THE PRODUCT IN RESPECT OF WHICH DAMAGES ARE CLAIMED.
INHERENT RISK
Purchaser assumes all risk associated with the use or application of the product.
840 South 25th Ave Bellwood, IL 60104 708-493-9569 www.surebuilt-usa.com
