- Excellent bonding to the substrate.
- Eliminates hacking.
- Easy to use, only requires addition of water.
- Higher productivity-saving on labour costs & time
Rush Coat Special Concrete RC-300
Description
Stucco® RC-300 is a factory blended polymer modified cement based rush coat to provide a mechanical key on smooth surface of polymer modified concrete for plastering. The use of rush coat RC-300 is to replace chipping or hacking on dense concrete surface.
Composition
Ordinary Portland cement, processed sand, polymers and plasticizer.
Advantages
Technical Data
| Binder | Ordinary Portland cement |
| Size of the aggregate | < 2.00 mm |
| Density | Dry - 1.70 kg/ltr , Wet - 1.85 kg/ltr |
| Water requirement | 23% |
| Approximate yield/coverage | 31 ltrs per bag/ 20 m2 per bag @ 2mm thickness |
| Working time | Approx. 45 minutes. |
| Curing | Minimum 2 days (48 hrs) by potable water |
| Compressive strength | 15.0 N/mm2 @ 28 days ASTM C579: 2001 B |
| Flexural strength | 2.0 N/mm2 @ 28 days BS 4551 : 1980 |
| Packing | 50 kg paper bags |
| Shelf Life | 12 months from date of Manufacture |
| Application Standards | DIN 1168, BS 5262,5492,4551, DIN 18550/1, ASTM C932, C348, C349, C109/CM-01 |
Method of Application
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Surface preparation
- Surface must be free of dirt, oil, grease, scaling paint, releasing agents, curing agents, dust, loose particles, efflorescence or other foreign materials.
- Spray sufficient amount of clean potable water to neutralize the suction of the background.
- Allow free water to evaporate completely before the application of the rush coat RC-300.
- Mixing Mix approx. 11.5 litres of clean potable water per 50kg bag. Add rush coat RC-300 to water and mix with a suitable mechanical mixer. Allow to stand for approx. 5 minutes to completely dissolve the chemical additives. Do not add any additional water once mixing is completed.
- Application Apply using a "Tyrolean Box"or with a hopper spray gun. Do not apply by trowel. Apply the material in two coats wet on wet but allow the first coat to stiffen slightly then spray the second coat. A rough texture is to be obtained to provide a mechanical key for the subsequent coat of plaster.
- Curing Moist curing for 2 days (3-4 times daily) is necessary due to the absorption of moisture as well as the evaporation of surface moisture.
- Precautions
- Do not apply if raining. Protect from rain for 48 hrs after application.
- Hard or lumpy material must be not be used.
- Storage RC-300 must be protected from moisture and direct sunlight. Store off the ground in a cool and dry place.