Open AccessStudy on the adhesion between activated kaolin modified asphalt and mineral materials
Author(s) -
Hujun Bao,
Chunyan Wu,
Yimin Zhang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1732/1/012109
Subject(s) - asphalt , softening point , adhesion , materials science , distilled water , composite material , chemistry , chromatography
The mass fraction of kaolin was 3%, 5%, 7%, 9%, 11%, 13% and 15%, respectively. The three indexes of kaolin were tested. The results showed that after kaolin was added, the penetration, softening point, ductility and deformation resistance of matrix asphalt were decreased. In addition, indoor adhesion test was conducted to analyze the adhesion of modified asphalt of granite and limestone with different kaolin contents, and the adhesion of modified asphalt in distilled water and 5%NaCl solution were compared. It is found that adding kaolin can improve the adhesion between asphalt and aggregate. Through a comparison of properties, it is suggested that the content of kaolin should be 5% rather than more than 7%.