Cold in-place recycling of asphalt pavement with self-cementing fly ash.

摘要

Reclaimed asphalt base (RAB) can be used as granular base or sub-base material in all pavement types. For low traffic volume roads, RAB may be stabilized using self-cementing fly ash to produce high quality road base using cold in-place recycling methodology. A demonstration project was completed utilizing this technology. This thesis presents a compilation of the laboratory test results used to characterize the RAB produced in that demonstration project and fly ash-stabilized RAB physical and engineering properties. The construction procedures and quality control guidelines are also described. Also, the field performance of the stabilized road base is discussed based upon the field CBR tests. Finally, Modulus of resilient for road base was found out by using Falling weight deflectometer (FWD) test and the resulting deflection bowls were analyzed using backcalculation program called Modulus 6.0 developed by Texas Transportation Institute and The Texas A&M University (TAMU).