Cellular concrete white papersCellular Concrete LLC has issued its fourth white paper in the Smart Foam Liquid Concentrate Solution series, which assesses alternative methods available for lightweight fill and geotechnical insulation applications. The papers advance cellular concrete as a sustainable, cost-effective solution for simplifying construction in tight placement applications, such as backfilling the annulus in pipelined tunnels. Download all four papers at www.cellular-concrete.com/white_papers.htm. 37/09.