Open AccessPerformance comparison analysis of cold recycled mixture of emulsified asphalt using 100% rap before and after the adding of cement
Author(s) -
Yanan Li,
Liang Fan,
Hui Wei,
Yuzhen Zhang
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/300/3/032023
Subject(s) - asphalt , cement , materials science , heavy duty , composite material , porosity , raw material , chemistry , engineering , organic chemistry , automotive engineering
Cement can influence the performance of cold recycled mixture of emulsified asphalt (CRMEA) significantly. A comparative study on the performances of CRMEA before and after the adding of cement was carried out here. In this experiment, four types of emulsified asphalt were prepared by using four heavy-duty 70# asphalt as the raw materials. These emulsified asphalt were blended with 100% reclaimed asphalt pavement (RAP) when no cement was added or 1.5% cement was added. Specimens were made by the improved Marshall test method, and a series of performance characterizations were performed. Results demonstrate that the porosity of the CRMEA is increased after cement is added. The Marshall stability is improved under both 40°C and 60°C, and the Marshall stability under 60°C increases more pronounced compared with that under 40°C. In addition, the splitting strength increases and the bonding performance of CRMEA are enhanced with the addition of cemen.