MASTERAIR 160

MasterAir 160 is an admixture, based on specific surfactants, suitable for the production of ready-mixed mortar with characteristics of high workability (mortar for masonry or plaster).

MasterAir 160 can be advantageously used for the packaging of ready-mixed mortar based on cement even with additions of hydraulic lime.

MasterAir 160 can also be used to prepare normal concretes to increase durability of concrete structures against freeze/thaw cycles damages (exposure classes XF1-4 ac- cording to EN206-1) and concretes with lightweight aggre- gates. According EN 206-1 the optimum air content must be in the range of 4%.
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;
• adequate concrete strength, assuming the use of sound aggregates and proper mixing, placing,
handling and cur- ing techniques.

MasterAir 160 is free of chloride and meets UNI EN 480 (1- 2), ASTM C 260 requirements.

We recommend the combined use of MasterAir 160 with one or more of the following items to add to a premixed mortar:

• MasterSet R 200BM to give the workability of mortars up to 48 hours from the time of mixing.

• A constant air content during time with high stability of the mortars in the storage phase (absence of segregation), and without the need to keep them constantly mixed
• An improved plasticity and workability of fresh mortar.
• A strong reduction of waste.
• An increase in execution speed of the walls.
• Improved workability, pumpability and surface finish characteristics of the mortar.
• A reduction of the costs of construction.
• Improved stability of air-entrainment.
• Durable concrete structures against freeze/thaw cycles damages.
• Improved air-void system in hardened concrete.
• Reduced segregation and bleeding.