文章信息/Info

Title:

Advances on the Application of Recycled Asphalt Shingles (RAS) in Asphalt Pavement Recycling

作者:

馬峰1;  邢海鵬1;  盧現林2

1.長安大學公路學院，陜西 西安 710064 2.長安大學材料學院，陜西 西安 710064

Author(s):

MA Feng1;  XING Haipeng1;  LU Xianlin2

1.School of Highway, Chang’an University, Xi’an 710064, China 2.School of Materials Science and Engineering, Chang’an University, Xi’an 710064, China

關鍵詞:

道路工程; 回收瀝青瓦; 循環利用; 瀝青混合料; 路用性能

Keywords:

road engineering;  RAS;  recycling;  asphalt mixture;  pavement performance

DOI:

10.7502/j.issn.1674-3962.2018.04.08

文獻標志碼:

A

摘要:

為了將建筑行業所產生的大量廢舊瀝青瓦材料再生應用于道路建設中，促進循環利用，闡述了利用回收瀝青瓦再生瀝青混合料的可行性及相應再生方法，綜述了回收瀝青瓦改性瀝青膠結料的粘度、抗車轍和低溫抗開裂等性能以及回收瀝青瓦再生瀝青混合料的路用性能，指出未來進一步的研究建議。現有研究表明，瀝青瓦改性瀝青膠結料表現出更好的抗車轍性和低溫性能，且低瀝青瓦含量對其低溫抗裂性能并未有明顯影響，瀝青瓦改性后因膠結料粘度提高而出現的硬化問題可通過引入生物改性技術來消除。回收瀝青瓦材料加入瀝青混合料中能有效降低脆化溫度，提高混合料的抗車轍性能、抗疲勞開裂性及水穩定性。采用發泡工藝和添加劑可將回收瀝青瓦材料再生技術與溫拌技術相結合，從而表現出良好的環境和經濟效益，為我國環保型路面研究提供了參考價值

Abstract:

In order to reuse a large number of waste recycled asphalt shingles (RAS) material generated by construction industry, and promote the recycling of waste RAS, feasibility and recycling method about application RAS in recycling asphalt mixture are expounded. The viscosity, rutting resistance, and low temperature cracking resistance of RAS modified binder are reviewed. Furthermore, pavement performance of reclaimed asphalt mixture by RAS, and environmental as well as economic benefits are also reviewed. In addition, the existing problems and further research advice are proposed in this paper. Existing researches show that RAS modified binder exists better rutting resistance and low temperature performance, low temperature cracking performance is no evidently deteriorated at low RAS content. Moreover, the increasing viscosity and stiffening problem caused by RAS can be eliminated by introducing bio�瞓inder. After RAS is mixed into asphalt mixture, the stiffness, rutting resistance, fatigue cracking resistance and moisture susceptibility are improved effectively. Through adopting foaming technology and additives, the workability of warm mix asphalt mixture recycled by RAS can be improved. The integration of RAS recycling technology with warm mix asphalt (WMA) is more environment friendly and economic, and can provide practical significance for environmental pavement engineering researches.