The purpose of this study is to investigate
the feasibility of using recycled building materials as base, sub base, and
subgrade in road construction. It is well known that roads are major consumers
of aggregate and the influence of aggregate cost is more in total construction
cost of the roads. In order to reduce the cost of construction of roads, the
possibility of using building waste as aggregate in subbase and base course has
been studied. Experimental studies were carried out to determine the engineering
properties of the recycled aggregate and compared with conventional aggregate.
It has been observed that the building debris can be effectively used as road
material as it is satisfying the MoRTH (Ministry of Road Transport &
Highways) requirements. Brick aggregate was found to be relatively soft
compared with other recycled aggregate which may be used as sub-base course.
INTRODUCTION
Aggregate generated from quarries, produce number of
environmental problems like noise and dust pollutions (Gopala Raju et al., 2007). Generally, quarries
are located on the outskirts of city limits. But as cities grow, these quarries
have to be relocated further away from the urban centers. The cost involved in
transporting the aggregate increases tremendously due to this increase in
distance between urban centers and aggregate production. Every year, tons of
concrete being used in various construction activities (Annette et al., 2001). The problem arises
while disposing the demolished concrete once its design life is over (Pasetto,
2000). The availability of landfill sites for disposal of waste has been
drastically decreased over the past 15 years due to strong environmental lobby
(Berendsen, 1997). With the limited supply of landfill sites and great demand
for waste disposal, the cost of dumping of waste has been increased in recent
times.
DOWNLOAD FULL PAPER - HERE
No comments:
Post a Comment