The performance of a full-scale pavement constructed using a cold recycled emulsified asphalt mixture is presented. The cold recycled mixture was used for the surface layer in a trial section of a public road in israel, subjected to low-volume traffic. The modified marshall stability method (astm d1559) at 60 deg c (140 deg f) was used for the mix design. Experimental field verification was performed starting immediately after construction and lasting 1 yr. The verification included strength and durability tests on cores taken from the site and nondestructive testing (ndt) in situ, based on elastic surface deflection measurements. As shown by the results, the cold recycled apshalt layer achieved high retained strength and high durability potential to the combined damaging effects of water and temperature. After 1 yr of service the pavement has been performing well without any kind of distortion. These findings emphasize the high engineering quality of cold recycled asphalt mixtures in construction andrehabilitation of pavements, as compared with the conventional alternatives. This paper appears in transportation research record no. 1228, Asphalt mixtures and asphalt chemistry.
Abstract