Laboratory Investigation and Economic Analysis on Utilization of Reclaimed Asphalt Pavement material in Flexible Pavement Layer (D.B.M)

Abstract

Reclaimed Asphalt Pavement is one of the
modern and useful technologies in many
developed as well as in developing countries.
The utilization of RAP is rapidly increasing
popularity and becoming an emerging technique
in India. As per Indian Road Congress-120:
2015, remove or reprocessing of pavement
materials containing aggregates which are
bitumen covered is termed as RAP. These
materials are gained through a process in which
the existing surface pavement is reclaimed and
reused after processing for reconstruction,
resurfacing, or repaving. Well graded and high
quality aggregates coated with bitumen are
achieved from this process. Suitable use of RAP
with specific properties and specific percentages,
not just serve as an substitute useful pavement
material but also helps in reducing the practice
of natural construction material, that will
decrease the in general expenditure of project.
By conducting tests as per MoRTH
specifications (5th Revision), the various
characteristics of RAP material, fresh bitumen,
and fresh aggregates are observed. Main points
of the research were focused on caring out the
performance tests: Marshall Stability on fresh
material as well as on material mixed with
reclaimed asphalt pavement i.e. 10%, 20%, and
30% of total mix and to obtain optimum binder
content by using Marshal Parameters. Attempts
are carried out to design a new pavement using
Indian Road Congress (IRC-37: 2018) guidelines
and utilization of RAP material. Economic
benefits are calculated in terms of fresh and
RAP (10%, 20% and 30%) mix material
pavement.