A study was conducted to compare the fatigue, thermal cracking, and permanent deformation resistance of several Alaskan crumb rubber–modified (CRM) asphalt mixtures with that of conventional mixes. Alaska Department of Transportation and Public Facilities–designated sites in Fairbanks and Anchorage were sampled to conduct flexural beam fatigue tests, thermal stress restrained specimen tests (TSRSTs) and Georgia loaded wheel tests (GLWTs) on both rubberized and conventional mixes. Condition surveys were also conducted at the sampled sites to assess the field performance of these mixes in terms of fatigue, rutting, and low-temperature cracking. Fatigue testing results combined with multilayer elastic analyses for typical Alaskan conditions indicated an enhanced fatigue resistance for the CRM mixes when compared with conventional mixes. However, field performance observations at both conventional and CRM sections indicated no signs of fatigue distress, suggesting similar field performance for both types of mixes. TSRST results indicated an improved thermal cracking resistance for the CRM mixes, especially when the wet process was used. These results were consistent with observed field thermal cracking performance. At a given site, the section with the largest transverse crack spacing had the mix with the coldest TSRST fracture temperature. Conventional mixes outperformed CRM mixes in resisting permanent deformation, in both the lab and the field. GLWT results indicated that CRM mixes deform more and at a faster rate than conventional mixes. This may be due to the dense-graded aggregate used in some of the highly modified CRM mixes, where aggregate-to-aggregate contact and interlock were absent.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Performance of Rubberized Asphalt Mixes in Alaska


    Additional title:

    Transportation Research Record


    Contributors:


    Publication date :

    1997-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Performance of Rubberized Asphalt Mixes in Alaska

    Saboundjian, S. / Raad, L. / National Research Council; Transportation Research Board | British Library Conference Proceedings | 1997


    Performance of Rubberized Asphalt Mixes in Alaska

    Saboundjian, Stephan | Online Contents | 1997


    Research for Noise Reduction Performance of Rubberized Asphalt Overlay

    Zhang, Hong Bo ;Tan, Hua | Trans Tech Publications | 2015


    Prediction of engineering properties of recycled aged rubberized mixes using GPC

    Lee, S.-J. / Kim, H. / Amirkhanian, S.N. et al. | British Library Conference Proceedings | 2008


    Durable Rubberized Asphalt Proves Its Worth in Phoenix

    British Library Online Contents | 2007