Lytag - lightweight aggregate for structural fill

Lytag lightweight aggregate (LWA) is widely used as a structural fill to raise existing surfaces to achieve new falls or to construct ramps, provide a deep screed within which services may be buried, infill between items such as bridge beams to provide a level surface for the structural deck, formation of architectural, infill for raised access flooring and permeable back fill for retaining walls, bridge abutments.