It is supplied as a dark brown liquid based on selected sugar reduced lignosulphonates combination with compatible surface active agents. AEROCRETE AE acts at the interface of the cement-aggregate particles and mixing water to produce microscopic air bubbles evenly distributed throughout the concrete. The entrained air bubbles are of the optimum diameter and spacing to give durability under freeze-thaw or salt attack conditions whilst enhancing lubrication during placing. Dosage 150 ml to 250 ml / 50 kg. cement.