Product Description

Concrete is susceptible to spalling and crazing due to the action of frost. This is caused when water which is absorbed in the concrete expands on freezing thereby developing internal pressure in the concrete leading to disruption of its structure. The intrusion into concrete of a limited amount of entrained air, evenly dispersed throughout the mass in the form of minute bubbles, imparts a high degree of resistance of frost action. The effectiveness of entrained air in producing durable concrete has been recognised for some years, in particular for roads and runways. Air entrainment usually results in slight strength losses but Classic Airent, being a combined air entraining agent and plasticizer, provides the requisite amount of air without loss in strength or increases in cement content, being due to a concomitant water reduction