Open AccessApplication of RAP Variability Control in Plant-Mixed Hot Regeneration of Asphalt Pavement
Author(s) -
Yao Ai-ling,
Han Fangyuan,
Hao Runshu,
Wang Leiting
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/371/3/032055
Subject(s) - asphalt , asphalt pavement , gradation , microporous material , environmental science , reuse , extraction (chemistry) , filtration (mathematics) , process engineering , waste management , materials science , engineering , computer science , composite material , mathematics , chromatography , chemistry , statistics , computer vision
Plant-Mixed hot regeneration technology is widely used because it can solve all the diseases of used asphalt pavement, however, in the current stage of reuse, there is a phenomenon that the indices of recycled asphalt mixtures(RAP) are discrete and difficult to control, the reason for the analysis is due to the large variability of the used asphalt mixture. In this paper, the traditional RAP design method is improved by the classification of the used materials, extraction-microporous membrane vacuum decompression filtration-distillation combined separation device, reduce the coefficient of variation of asphalt and aggregate in used asphalt mixture, effectively control the variability of the used asphalt mixture, so that the each index of the Plant-Mixed hot regeneration can achieve precise control of various indicators in the mix design stage.