How to reduce reclaimed asphalt variability: A full-scale study

摘要

A 270 m long highly variable pavement section was isolated for this research (video https://youtu.be/ jmkjavMwhao) to evaluate quantitative changes in variability of reclaimed asphalt pavement (RAP) as a result of milling and stockpile homogenisation operations. The results demonstrated that variability of binder properties and binder content reduced by a similar magnitude during milling and mixing, with each operation allowing to increase the maximum RAP content in new mixtures by 10%. Statistical analysis confirmed that filler content increased by 4.8% during milling while average values of other test results were not significantly changed. (C) 2018 Elsevier Ltd. All rights reserved.