Dura-Coat Strong-Krete Fast 850
Technical Data Sheet
DESCRIPTION AND RECOMMENDED USES: 100% solids, Dura-Coat Strong-Krete Fast 850 is a three component ambient-temperature curing epoxy coating with quartz (SiO2) reinforcement agregate. It is designed particularly as rebuild and protection for concrete from chemicals and heavy traffic service. Dura-Coat Strong-Krete Fast 850 is convenient-to-use, non-sagging with excellent high chemical resistance and high mechanical strength.
- It can be easily applied by trowel 240 mils without slump
- Ideally suited for concrete protection for corrosion
- Suitable for abrasion protection
- Suitable for immersion and non-immersion service
Application Areas
- Secondary containment
- Industrial floor
- Concrete walls
- Sumps
- Pump base
- Concrete channels
- Drains
- Chemical processing floor
- Pits
- Heavy traffic floor
- Equipment bases
Package
- Size 60Kg | Reorder # 850-60
Technical Data
| Maximum Temperature (Dependent on service) | Wet Service | Intermittent Service | 50°C | 60°C | 122°F | 140°F |
|---|---|---|---|
| Chemical Resistance | Water | Alkalis | Inorganic Acids | Organic Acids | Organic Solvents | Excellent | Excellent | Good | Good | Good | |
| Solids by Volume | 100% | ||
| Thermal compatibility to concrete | (ASTM C 884) | Pass | |
| Pot life | 25 MIN/KG at 72ºF | ||
| Vertical SAG Resistance at 21°C (70°F) and 6mm (240mils) | Non-sag (With Krete-Seal 800 as primer) | ||
| Coverage for 60 kg kit | 81sf @240mils per kit | 7.5m2 @6mm per kit | |
| Mix Ratio Liquid | 2:1 by weight | Base: Activator | |
| Mix Ratio Mortar | 1:5 by weight | Resin Mix: Quartz | |
| Color | Grey as standard and Red optional | ||
| Shelf Life (unopened containers) | 3 years at 55-95ºF (13-35ºC) | ||
Application Sheet
Surface Preparation
Proper surface preparation is critically important for the long-term performance of the Dura-Coat Krete-Fast 850.
The prepared concrete surface must be structurally sound, free from all contaminants and roughened to an >ICRI CSP 3 profile (similar to #60 grit sandpaper). If using with Dura-Coat Krete-Seal 800, surface may be damp, but not wet i.e. no free-standing water. A vapor barrier (Dura-Coat Krete-Seal 800) is required for slab on grade application. If no vapor barrier is present, check for vapor transmission.
Surface Cleaning & Profiling Methods
Hydro-Blasting Scarifying
Steel Shot-Blasting Dry Abrasive Blasting
Mixing
To facilitate ease of mixing and application, all material temperatures should be between 21°-32°C (70°-90°F) prior to mixing. Dura-Coat Strog-Krete Fast 850 should be applied shortly after application of Dura-Coat Krete-Seal 800 primer. The primer must still be tacky prior to applying Dura-Coat Strog-Krete Fast 850; otherwise, the area must be reprised. This is optimally within 2 hours of application, depending on ambient conditions. Premix the Base to disperse pigments. Thoroughly mix Base and Activator in a suitable pail, using a slow speed mixer. Next, transfer the blended resins to an epoxy mortar mixer containing one bag of Quartz and gradually add in remaining bags. Total mixing time should be a minimum of 3 minutes or until uniformly blended.
Application
The mixed Dura-Coat Strog-Krete Fast 850 may be distributed on the floor surface using screed guides and rigid bar, or screed box, not exceeding 1.2 m (3.93 ft) wide.
• Apply a minimum of 6 mm (240 mil) and finish the surface using steel trowels.
• IMPORTANT: During application, press Dura-Coat Strog-Krete Fast 850 firmly on to the substrate to promote contact with the primer and to ensure thorough compaction. Trowel-finish the surface to a smooth closed surface texture.
Curing Schedule
| 16°C (60°F) | 25°C (77°F) | 32°C (90°F) | |
|---|---|---|---|
| Tack Free | 60 min. | 45 min. | 30 min. |
| Light Load | 4 hrs. | 3 hrs. | 2 hrs. |
| Overcoat End | 4 hrs. | 3 hrs. | 2 hrs. |
| Full Load | 8 hrs. | 6 hrs. | 4 hrs. |
| Full Chemical | 16 hrs. | 12 hrs. | 10 hrs. |
Clean Up
Tools must be immediately cleaned after usage by using industrial alkaline detergent.
Safety
Before using any products, review the appropriate Safety Data Sheet (SDS) or Safety Sheet for your area. Follow standard confined space entry and work procedures, if appropriate.
Manufacturer, Dura-Coat Industrial Inc., makes no warranty either expressed or implied including warranties of merchantability or fitness for a particular purpose for this product. Under no circumstances will the manufacturer be liable for incidental, consequential, or other damages, breach of warranty, strict liability, or any other theory arising out of use of this product. The information and or recommendations contained herein are based on standard Product and are proprietary and furnished solely for the use of our customers. This information is provided in good faith and believed to be true and accurate as of the date/version of this document. As the manufacturer has no control over the use conditions or application process of the parties using this product, the manufacturer cannot accept responsibility for loss, injury or other damages resulting from the use of the Product or this or any other information provided by the manufacturer. Therefore, no guarantees of any kind, expressed or implied, are made by the manufacturer, Dura-Coat Industrial Inc., regarding this, or any, product manufactured by them or any contracted or licensed manufacturer. DURA-COAT® epoxy products do not provide structural integrity or improvement. They are only used to provide protection from corrosion, wear, abrasion and chemical attack on a given substrate and only to the extent provided for in the Data Sheets, Technical Data Sheets, Safety Data Sheets, and any other information as supplied in writing directly from manufacturers technical support.
Revision: 4/2024