Study On The Application Of Granite-Asphalt-Concrete In Pearl River Delta Of China

With the rapid development of high-grade highway construction in Guangdong the Pearl River Delta, the frequently used aggregate of asphalt pavement as Basalt and Limestone and so on have gradually begun to be too scarcity to meet requirements of the high-grade highway construction in this area. There are very abundant Granite in Pearl River Delta of China. The granite is the acidic stone material, lithical hard, compact, wear resistant well, can display between the aggregate to inlay fully pushes the function, but is not good with the asphalt coherence. Granite creates the asphalt membrane easily under the water function abscission.In this paper, it takes the granite asphalt concrete as the object of study, take the contact surface coherence theory as the foundation, analyzes the asphalt, the aggregate, the anti-stripping agent as well as other extraneous factor separately to the aggregate and the asphalt coherence influence. In studying the domestic and foreign existing coherence testing method in the foundation, proposed is more precise and relates"the improvement with the existing standard to adsorb the law"closely the testing method.In this paper, we studied the four habitat granite aggregate in Pearl River Delta of China. Through joined the different type anti-stripping agent and the heterogeneity asphalt, advanced together the running water stability, the high temperature stability, to bear bituminous mixture experiments and so on aging, obtained the granite aggregate and the asphalt and the anti-stripping agent optimal fit. Proposed that the granite asphalt concrete design, the production and the construction specific request, and through experimented the road to lay has confirmed the design and the construction measure rationality.