EXPANDED SHALE CLAY AND SLATE LIGHTWEIGHT AGGREGATE
EXPANDED SHALE CLAY AND SLATE LIGHTWEIGHT AGGREGATE GEOTECHNICAL FILL Jody Wall, PE Reid Castrodale, PhD, PE . Carolina Stalite Company . Salisbury, NC . 2 2 Structural Lightweight Aggregate LWA is a manufactured aggregate Raw material is shale, clay or slate Expanded in a kiln at deg. F Gas bubbles formed in softened