Search

To realize the color functionalization of road paving, this paper developed a light-colored resin modified asphalt, which can be added with toner to adjust different colors to realize the color paving of asphalt mixture. Fourier infrared spectroscopy (FT-IR) was used to analyze the difference between functional group composition of light-colored asphalt and 70# petroleum asphalt and to compare the conventional performance and road performance of light-colored asphalt with I-D grade modified asphalt. The road performance mainly includes high temperature performance, water stability performance and anti-skid performance. The test results showed that the light-colored asphalt and 70# petroleum asphalt had similar functional group composition, and the technical indicators of the light-colored asphalt could meet the requirements of I-D grade modified asphalt; the three road performances of the light-colored asphalt mixture met the specification requirements, which were even more excellent than the I-D grade modified asphalt mixture, indicating that the light-colored resin modified asphalt synthesized in this paper can meet the application of road engineering. Meanwhile, the light-colored resin modified asphalt has less smoke, lower carbon emissions, and superior performance than petroleum asphalt during use, which is beneficial to the sustainable development of road engineering.

In order to study the influence of anti-slipping layer color on driving safety before the tunnel entrance, based on color theory and psychology, this paper used UC-win/Road, Adobe Photoshop, and 3D Max to simulate the real scene, and 8 different color schemes were designed for anti-slipping layer paving. The analog driving device was used to simulate driving, and the eye tracker was adopted to collect the characteristic data of driver’s eye movement. Through data processing, driver’s pupil area change, gaze point proportion and reaction time for targets in the 8 color scheme conditions were obtained, and then the impact of different anti-slipping layers color on driver’s driving safety was evaluated. The anti-slipping layer pavement schemes with different colors have different degrees of impact on driver vision, which in turn affect driving safety. According to the characteristics of optical illusion, a discontinuous multicolor anti-slipping layer pavement scheme was designed, which can provide strong guidance to improve the security of high-speed driving on Wenshan Guangnan-Nasa Expressway.

We have worked out a method to obtain T-gate structures of sub-micron size with the Leica VB-5HR e-beam lithography system, tri-layer resists, and several levels of dose assignments, and applied this method to make GaAs microwave and millimeter wave devices and integrated circuits. Also, we have studied on lithography to fabricate fine lines of sub-micron even to nano-level, and we obtained the golden lifted-off features of 17 nm.