Air Set Cements are suitable for thin film bonding and coating applications from 2 to 125 mils. The curing mechanism involves the evaporation of water, working time is indefinite and final cure occurs between 18 and 24 hours. These are based on a ceramic material. These can be applied in the layers to allow the water to evaporate. This is a thermal shock resistant and thermally conductive. It resists oils, solvents and most acids.
Air sparging system is used to injecting air directly into groundwater. It remediates groundwater by volatilizing contaminants and enhancing biodegradation. As the bubbles rise, the contaminants are removed from the groundwater by physical contact with the air and are carried up into the unsaturated zone. As the contaminants move into the soil, a soil vapor extraction system is usually used to remove vapors. The addition of oxygen to contaminated ground water and soils also enhances biodegradation of contaminants in and above the water table, as it acts as a nutrient for bacteria. There are several enhancements for air sparging.