Title: State-of-the-Art Review in Micro-Surfacing: Harnessing Reclaimed Asphalt Pavement (RAP) for Sustainable Pavement Preservation


Authors:

Ankit Sharma

sharmaankit.sharma65@gmail.com
Department of Civil Engineering, Swami Keshvanand Institute of Technology, Management & Gramothan, Jaipur, India,

Deepesh Kumar Gupta

gopeshagrawal05@gmail.com
Department of Civil Engineering, Swami Keshvanand Institute of Technology, Management & Gramothan, Jaipur, India,

Rajiv Kumar

Rajivkumar.crri@nic.in
CSIR- Central Road Research Institute (CRRI), New Delhi, India,

Nishant Sachdeva

nishant.sachdeva@skit.ac.in
Department of Civil Engineering, Swami Keshvanand Institute of Technology, Management & Gramothan, Jaipur, India,

Dinesh Kumar Sharma

dks@skit.ac.in
Department of Civil Engineering, Swami Keshvanand Institute of Technology, Management & Gramothan, Jaipur, India

Pages: 77-87

DOI:

Abstract:

Micro-surfacing involves rejuvenating the existing pavement through the application of a thin layer comprising polymer-modified emulsion, aggregates, filler, water, and additives. It is recognized for its rapid curing, resource efficiency, and eco-friendliness. The literature review encompasses a comprehensive analysis of existing studies, methodologies, and findings related to micro-surfacing technology, recycled asphalt usage etc. It was found that using Reclaimed Asphalt Pavement (RAP) in micro-surfacing can reduce the use of emulsion and natural aggregates by using RAP binder and fine aggregate. This process also helps in improving the compatibility of the virgin aggregate with emulsion and decreasing fossil energy consumption and greenhouse gas emissions. Further, it was found that optimal asphalt content (OAC) decreases as RAP content increases. Moreover, the addition of RAP is shown to extend the mixing time, enhance moisture and freeze-thaw resistance, and improve skid resistance.

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