Air entraining admixture for concrete
How does MasterAir 115 work?
MasterAir 115 is an air-entraining admixture which produces ultra-stable air bubbles with good size and spacing factor. MasterAir 115 complies with C-260-86.
What is MasterAir 115 used for?
Concrete durability research has established that the best protection for concrete from the adverse effects of freeze/thaw cycles and de-icing salts results from: proper air content in the hardened concrete; a suitable air-void system in terms of bubble size and spacing; and adequate concrete strength; assuming the use of sound aggregates and proper mixing, placing, handling and curing techniques.
The rate of use of an air-entraining admixture depends on the air content to be obtained along with many other factors. The amount normally required is reduced by the introduction of water-reducing, set-controlling admixture.
MasterAir 115 entrains controlled air contents in normal mix designs; low workability concrete; concrete containing pulverised fly ash (PFA) and large amounts of fine materials; concrete using high alkali cements; high temperature concrete; concrete with extended mixing times and concrete containing a wide variety of cement types and sources.
What are the benefits of MasterAir 115?
MasterAir 115 is especially useful in the types of concrete known for their difficulty to entrain and maintain the desired air content. Entrainment of the optimum air content in concrete results in the following improvements to quality:
- Increased freeze/thaw damage resistance
- Reduced permeability
- Reduced segregation and bleeding
- Improved plasticity and workability
- Increased resistance to scaling
- Increased cohesion and mobility
- Ready to use - no dilution is required