ACI 325.3R : 1987

Methods are suggested for material selection, moisture control, and compaction or treatment of soils and materials to assure volume stability and uniform support for concrete pavements. Various environments are considered and appropriate methods of upgrade preparation are outlined. Sub-base functions are defined and adaptability of types of sub-bases are discussed. Placement of materials to aid in sub-base moisture control is emphasized in shoulder design. A section on recognition of causes of deficiencies in existing pavements is included to alert the engineer to the consequences of improper construction or adverse environment.