The Ultrafoam GX2 from Gencor, Orlando, is designed to inject steam into the foaming process using only the energy of the pump or head supplying the liquid asphalt cement (AC) and water for warm-mix asphalt (WMA) production. Here’s how it works. A small percentage of water—1 to 2 percent by weight—is injected into the center … Continue reading Gencor’s Green Machine