Department of Civil Engineering, Transporation Division, National Institute of Technology, NIT Warangal, Telangana, 506004, Warangal, India.
Environ Sci Pollut Res Int. 2022 Jul;29(31):46570-46586. doi: 10.1007/s11356-022-20522-5. Epub 2022 May 6.
Cold recycling techniques emerged in road construction to recycle deteriorated pavements as bases and surfaces. A detailed review is carried out in the current study on the design, evaluation, performance, and advances in the emulsified asphalt-treated bases (EATB). The mix-design of EATB is a complex procedure in which the performance is based on optimizing water, additives, and emulsified asphalt contents. This paper covers the design methods, compaction characteristics, curing periods, additive contents, strength development, strength parameters, determination of the optimum emulsified asphalt content, and finally, the performance evaluation of EATB. From the detailed review, indirect tensile strength (ITS) is the most influencing parameter considered in the mix design of the EATB. Maximum dry density, Marshall Stability, and ITS are considered as primary performance indicators of the EATB. Modulus, rutting, and fatigue being consider secondary performance indicators. Overall, the recycled bases using emulsified asphalt proved sustainable and economical compared with the natural aggregates (NA).
冷再生技术在道路建设中应运而生，用于回收老化的路面作为基层和面层。本研究对乳化沥青处理基层（EATB）的设计、评价、性能和进展进行了详细回顾。EATB 的混合料设计是一个复杂的过程，其性能基于优化水、添加剂和乳化沥青含量。本文涵盖了设计方法、压实特性、养护期、添加剂含量、强度发展、强度参数、最佳乳化沥青含量的确定，最后是 EATB 的性能评估。从详细回顾中可以看出，间接拉伸强度（ITS）是 EATB 混合料设计中最具影响力的参数。最大干密度、马歇尔稳定性和 ITS 被认为是 EATB 的主要性能指标。模量、车辙和疲劳被认为是次要性能指标。总的来说，与天然集料（NA）相比，使用乳化沥青的再生基层具有可持续性和经济性。
