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Where temperatures or chemical concentrations necessitate, the Epoxy NovolaK Grade No. 228SL offers additional protection. Consult Sauereisen chemical resistance charts. This epoxy flooring system should be used with an appropriate Sauereisen primer to enhance bonding. Consult Sauereisen for a primer recommendation depending on the type of substrate and surface conditions.
- Characteristics
- Resistant to a wide range of acids, alkalies and some solvents.
- Recommended for the food & beverage, chemical processing, pharmaceutical, steel, and power industries.
- 100% solids material, no noxious or toxic odors during application.
- Available colors: 53 gray, 63 tile red
Applications & Uses
- Applications
- Application Area
- Compatible Substrates & Surfaces
- Area Preparation
Temperature of Working Area
- The monolithic components and substrate should be maintained at 65°F to 85°F for 48 hours prior to beginning work. Maintain a temperature of 60° - 85°F on air, concrete substrate and material components during mixing, application, and cure.
- At temperatures below 65°F, the application becomes more difficult and curing is retarded. Above 85°F, the material working time decreases. It is recommended that the material components be stored in a cooler area prior to mixing.
- Application in direct sunlight and rising surface temperatures may result in blistering of materials due to expansion of entrapped air or moisture in the substrate. Concrete that has been in direct sunlight must be shaded 24 hours prior to application and remain shaded until after the initial set. When the surface temperatures are rising, it may be necessary to postpone the application or apply during cooler hours.
Surface Preparation
- Refer to SSPC-SP13/NACE 6 "Surface Preparation of Concrete" for detailed guidelines.
- Concrete must be dry, firm and structurally sound as specified by the architect/engineer. Concrete shall have a pull off strength of 200 psi or greater as tested by ACI 515.1 Appendix A. Surfaces should be made free of oil grease, and other contaminants that may inhibit bond. This can be achieved by chemical cleaning. Abrasive blast, highpressure water blast, or acid etch concrete to remove laitance and obtain uniform surface texture resembling coarse sandpaper.
- New Concrete - Concrete should be floated free of ridges or depressions and all voids filled with Sauereisen Underlayment No. F-120 or Filler Compound No. 209, depending on the severity of the voids. Too much slope will result in puddling of the coatings in low spots and insufficient coverage on the higher areas.
- If acid etching is utilized as the method of surface preparation, refer to ASTM D4260 "Standard Practice for Acid Etching Concrete" for appropriate procedure. All acid and residue must be removed prior to applying epoxy.
- Old Concrete - All structural cracks must be repaired and slopes reestablished with Sauereisen Underlayment No. F-120. Concrete should be sloped a maximum 1/8 inch per foot. If existing slope is greater it will be necessary to re-slope using Underlayment No. F-120 or other appropriate underlayments. Consult Sauereisen for recommendations.
- If abrasive or high-pressure water blasting is used as the method of surface preparation, all sand and/or debris must be removed by thoroughly vacuuming the area with an industrial vacuum cleaner. Repeat the procedure if necessary. If surface does not have desired texture, repeat surface preparation procedure.
- Application
An appropriate Sauereisen primer should be applied prior to the epoxy coating. This will enhance bond strength. ConoWeld No. 501 is the standard Sauereisen epoxy primer for concrete. Where porosity of concrete is a concern, Sauereisen PenePrime No. 500, a deeppenetrating waterborne epoxy primer, is recommended.
Mixing
- Primer - Primers are supplied in premeasured containers. Remix individual containers before using.Packaging of Primers No. 500 and 501 consists of Hardener Part A and Resin Part B which must be mixed together. Completely empty contents of Hardener Part A into Resin Part B container. Using a slow speed 1/2 inch drill motor with a "Jiffy" type blade, mix thoroughly until blended for three minutes. Primer is ready for use immediately after mixing.
- Self-Leveling Epoxy No. 228 SL - Empty contents of Hardener into Liquid and mix thoroughly until blended for at least three minutes with a "Jiffy" mixing blade and drill motor. Mix only complete units. Material which has begun to set must be discarded. Do not try to retemper the material. Do not add solvent, additive or adulterant to any component or mixed material. Material should be delivered to finishers immediately after mixing. Do not let material remain in the mixing vessel.
Properties
- Physical Properties
| Value | Units | Test Method / Conditions | |
| Application Time (Working Time, 70°F) | 45.0 | minutes | - |
| Application Time (Initial Set, 70°F) | 12.0 | hours | - |
| Bond Strength to Concrete | Concrete Failure | - | ASTM D-4541 |
| Compressive Strength | 6000.0 | psi | - |
| Density | 11.81 | lbs/gl | ASTM C-905 |
| Flexural Strength | 2700.0 | psi | ASTM C-580 |
| Maximum Service Temperature (Dry) | 180.0 | °F | - |
| Modulus of Elasticity | 106.0 | psi | ASTM C-580 |
| Absorption | max. 0.2 | % | ASTM C-413 |
| Shrinkage | max. 0.1 | % | ASTM C-531 |
| Tensile Strength | 2000.0 | psi | ASTM C-307 |
| Thickness | 10 - 30 | mils | - |
Technical Details & Test Data
- Coverage
- Primers
- ConoWeld 501: 200 ft²/gal. at 8 mils
- PenePrime 500: 200 ft²/gal. at 8 mils
- Self - Leveling Epoxies 228 SL: 160 ft²/gal at 10 mils
Quantities do not include losses during application.
- Primers
Safety & Health
- Clean-Up
All equipment should be cleaned with MEK or N-methyl pyrol before material cures. If removal is required after cure, consult Sauereisen.
Packaging & Availability
- Packaging
Unit Size Part A Part B 1 gallon 1 qt. can 1 gal. can 3 gallon 1 gal. can 3.5 gal. pail 5 gallon 1 gal. can 6 gal. pail Note: Containers are filled by weight, not volume. Container size does not indicate volume of contents.
Storage & Handling
- Shelf Life
Sauereisen Self-Leveling Epoxy No. 228 SL Liquids and Hardeners have a shelf life of one year. Store in unopened, tightly sealed containers in a dry location at 70°F. Avoid freezing. If there is a doubt as to the quality of the materials, consult Sauereisen.