Flowable fill, as it is often called, more formally known as Controlled Low Strength Material (CLSM), has an important place in infrastructure construction. It typically has a small percentage of cement (which may include fly ash), aggregate (usually fine), sometimes local soil, and lots of water. The water provides the flowability, but must be drained away at the deposit site, which can be a problem. Foam can be used in place of water to provide flowability and does not have to be dealt with at the deposit site. Furthermore, use of foam can create a lower density fill which put less load on the substrate below the fill. You may have to slightly increase the cement percentage to get required strengths, or just allow the foam to collapse at the deposit site and then be sure you have completely filled the deposit site. This will result in a "full density" fill. If you choose the latter approach, you need to use a "flash foam," which is different from our standard CreteFoam concentrate. Want to know more? Call 800-553-2404 and talk to Tony, Marty, or Rich.
