CASTECHREL SB
Solvent Based Chemical Release Agent
CASTECH Rel SB is a solvent based mould release agent for concrete formwork. It is supplied as a low viscosity amber coloured liquid.
Overview
About
CASTECH Rel SB is a solvent based mould release agent for concrete formwork. It is supplied as a low viscosity amber coloured liquid. CASTECH Rel SB reacts chemically with cement to impart excellent release properties to treated surfaces. Concrete cast against surfaces coated with CASTECH Rel SB exhibits a smooth, hard, uniform finish. CASTECH Rel SB has no negative effect on the properties of concrete, nor will it impair the adhesion of subsequent surface treatments when applied at the recommended coverage rates.
Typical uses
- Precast concrete industry
- Release agent for plywood, timber, steel and plastic shuttering
- Concrete laboratory moulds
Benefits
Advantages
Key advantages
- Suitable for all types of formwork
- Protects steel from corrosion
- Non staining
- Minimizes form stripping time
- Maximizes life of formwork
Technical data
| Form | Liquid |
|---|---|
| Colour | Amber |
| Specific Gravity (ASTM D 1475) | 0.82 ± 0.02 |
| Flash Point | 66°C |
Typical values. Refer to the TDS for full details and test conditions.
Application
Surface preparation
All moulds must be dry, clean and free from rust, concrete, oil or other materials prior to application of CASTECH Rel SB. Moulds should be protected from dust storm or rain during
Application
CASTECH Rel SB can be applied by all manual methods including brush, roller or spray, or using a cloth wetted with the material. Apply in a continuous even film as thinly as possible, using a suitable nozzle size when spraying. Avoid excessive amounts to prevent surface dusting and sagging. Concrete can be cast immediately after application or several days later; however, moulds or formwork with absorbent surfaces must be re-coated if casting takes place after more than three days.
Demoulding
After use, the formwork or mould should be brushed or wiped clean of any excess dust prior to re-application of CASTECH Rel SB for the next use of the mould.
Coverage
The coverage rate for CASTECH Rel SB is 30 to 70 m²/litre when spray applied, depending on the smoothness and porosity of the formwork used.
Equipment Care
CASTECH Rel SB may usually be left in spray guns or sprayers without detriment, but with certain types there may be some softening of rubber seals with prolonged contact.
Packaging & storage
Packaging
20 litre pails and 200 litre drums.
Storage & shelf life
Store under cover, out of direct sunlight and protect from extremes of temperature. Storage life is up to 12 months when stored in unopened containers as above.
Health & safety
PPE: Suitable protective goggles, gloves and mask must be worn. Precautions: In case of contact with eyes, rinse immediately with plenty of water; in case of contact with skin, wash off immediately with soap and water. If swallowed, seek medical attention immediately. Hazard: Regarded as non-hazardous for transportation. Disposal: Do not reuse containers. Dispose of as per local rules and regulations. Additional information: Refer to MSDS (available on request).
