Cemairin
Air entraining admixture for concrete
Cemairin is an air entraining admixture for concrete, formulated from selected polymers specially designed to create microscopic air bubbles that are uniformly distributed in the concrete mix.
This effect can be used to improve concrete cohesion and resistance to freeze thaw cycles.
- Greatly improves cohesion, reduces segregation and bleeding.
- Increased freeze/thaw cycle resistance.
- Improves workability and plasticity.
- Exceptionally effective with aggregate with high fi ne content.
- Suitable for mixes containing PFA, GGBFS and microsilica.
- Chloride free.
- In concrete mixes for roadways, airport runways and other concrete exposed to potential frost damage.
- To increase the durability of concrete and its resistance to damage by frost and de-icing salts.
- To increase cohesion of concrete mixes to overcome bleed, segregation and sand runs where poorly graded aggregate with high fine content needs to be used.
Cemairin is available in 25 litre pails and 200 litre bulks supply.
Cemairin has a shelf life of 12 months from date of manufacture if stored at temperatures between 2°C and 50°C.
The guidance dosage of Cemairin to achieve air content of 4.5 ± 1.5% in the concrete mix is 0.10 - 0.30 litre per 100 kg of cementitious material in the mix, including GGBFS, PFA or microsilica. We can go below or above the mentioned dose based on site concrete trials.
Representative trials should be conducted to determine the optimum dosage of Cemairin to meet the performance requirements by using the materials and
conditions in actual use.
Cemairin complies with ASTM C260, BS 5075, Part 2, EN 934, Part 2 and IS9103.
