THE STUDY OF RECYCLED ASPHALT CONCRETE AGGREGATE AS SUBBASE COURSE MATERIAL IN COLD REGIONS

Abstract

We studied the suitability of recycled asphalt concrete aggregate as subbase course material and frost blanket material in cold regions. We found that such material can be used as subbase course material if quality is carefully controlled through frost-heave tests and if the mixing ratio satisfies modified CBR standards. When such material was used in the frost blanket at a rate of 100%, temperature effects were not observed and bearing capacity did not decrease, thus confirming its suitability for use in the frost blanket