Study on Preparation and UV Ageing Resistance Effect of LDHs Modified Asphalt

摘要

The anti-aging asphalt modified by Supramolecular Ultra Violate(UV) Light Resistant material which is Layer double hydroxides (LDHs)was prepared in this paper, by using mechanical mixing, LDHs by various mass ratio were added into different typical asphalts. Taking the influence of the factors into account, including mechanical dispersing technologies, reaction conditions(temperature and time), content of the LDHs, the mutual consistent of LDHs among asphalt and storage stability was studied by segregation process and microstructure analysis (X-ray diffraction, Scanning Electron Microscope). Then after thin-film-oven-test (TFOT) and the artificial accelerated UV aging tests to simulate long-term UV aging, basic properties tests were conducted in this paper. The results showed that the UV anti-aging properties of the asphalt were greatly improved.