Summary: One of the most promising and cost effective approaches for rehabilitating distressed asphalt pavements is cold in-place recycling (CIR). Spurred by the recent development of new milling and reclaiming equipment. CIR has evolved into one of the fastest growing pavement rehabilitation processes. To address the lack of proven and simple mix design procedures and to provide construction guidelines with specifications, Oregon State Highway in 1987, published two of a three-volume research report on cold recycling: Development of Improved Mix Design and Construction Procedures for Cold In-place Recycled Pavements: Hicks, R.G.: Allen, D.D., et. Al.