Research on influencing factors of high temperature performance of new type noise reduction micro-surfacing

Abstract

The micro-surfacing has received widespread attention with its excellent anti-skid performance, waterproof performance, construction characteristics and significant cost advantages. However, the problem of the conventional micro surfacing high driving noise has been criticized. The new noise reduction micro-surfacing has appeared to greatly reduce the traffic noise to a considerable extent and solve the main bottleneck of the further promotion to the micro-surfacing. The noise reduction micro-surfacing proposed in this study has a special binder and gradation, as well as a specific rubber powder filler. Guided by the change rate of the wheel rut width, focused on the four key variables of oil-stone ratio, cement, mineral powder and rubber powder content, the high-temperature performance of the noise reduction micro-surfacing mixture is studied. The research shows: based on the special noise reduction gradation proposed in this article, in order to obtain a new type of noise reduction micro-surfacing with the best anti-rutting performance, the best oil-stone ratio is 10.5%, the best cement content is 1%, and the rubber powder should not exceed 2%.