Research on Factors Affecting the Binding Quality of asphalt Concrete Core Walls
Abstract: The combination of heart and wall is the weak link in the asphalt concrete core wall and is easily influenced by the factors such as temperature and rainfall. According to the specific engineering of Dahuofang reservoir, the temperature of -3 oC, 25 oC, 45 oC, 125 oC are simulated and the water level is sprayed to the surface at the level of 55 oC, 65 oC, 75 oC, 85 oC eight kinds of conditions for asphalt core wall rolling construction simulation. The results show that the low temperature does not affect the mechanical properties of asphalt concrete. The allowable minimum temperature of the wall without artificial heating is 45 oC. The water spray to the surface has good anti-sticking effect and the impermeability of asphalt concrete is also Ensure that the minimum allowable minimum temperature for core wall construction without artificial heating is 75 oC, which provides the basis for the construction of relevant projects.
Key words: asphalt concrete; Dahuofang reservoir; core-wall combined surface; sprinkling measures