The purpose of the proposed research is to evaluate the feasibility of recycling existing seal coat pavements through stabilization with self cementing fly ash. It is proposed that the existing pavements can be pulverized in place, sufficient quantities of Class "C" fly ash and water added, and the resulting mixture be compacted. The stabilized section could then be utilized as a base course section having more support capacity than the original materials. Self cementing fly ash is currently being used to stabilize soils and granular base materials by similar construction operations. The proposed research is intended to evaluate the influence of' the asphaltic bound particles in the stabilized mixture. The Phase I program will be limited to i laboratory evaluation of' the stabilized i-nixture. The initial phase of' the program will address influence of' Ay ash content, moisture content at time of compaction, and compactive energy on the stability of the stabilized mixture. The final phase would address the @icceptable quantities and optimum particle size for the asphaltic hound particles and influence of retarders. This information will provide a basis for establishing construction procedures and niix design criteria for the recycled materials.The potential commercial application as described by the awardee: The primary commercial application of this research will be to allow coi-nniunities to improve their traffic iiil'rlistrute at less cost per mile than current methods and iiiateri@ils. A secondary application will be the utilization of' a waste ni@iterial as a construction material rather than disposing of it in a land fill.
