Product Information
MIRA® 199-New Generation Admixture for Performance Enhancement of High Quality Concrete
Advantages:
- Provides long slump life with controlled set times.
- Finishes easily without stickiness, tearing or spotty set characteristics.
- Less susceptible to segregation and bleeding.
- Highly efficient, producing desired slump concrete with no loss in strength.
- Quick and easy application to the concrete mix water for rapid batching.
Applications
Excellent slump control and slump retention are necessary properties of any high quality concrete. MIRA 199 is a tailor-made admixture that helps concrete achieve excellent slump retention for all ranges of design workability. MIRA 199 is extremely effective in enhancing workability and slump retention even in mid-slump concrete and concrete with manufactured sand (crush granite fines), where conventional admixtures have difficulties achieving these properties.
MIRA 199 is suitable for a wide range of quality concrete, from low to higher grade concrete, by adjusting addition rate. The use of ADVA® superplasticiser can help to provide further water reduction when very low water-cement ratio is needed.
Addition Rates
Addition rates of MIRA 199 can vary with type of application. Depending on the application, dosage rates can range from 600 to 1,800 ml / 100 kg of cementitious material. However, in most applications, 800 to 1,400 ml / 100 kg of cementitious material will be sufficient. For best results, MIRA 199 should be added with the mix water. At a given water-cement ratio, the slump required for placement can be controlled by varying the addition rate. Should job site conditions require using more than recommended addition rates, please consult your Grace Representative.