CONSULPAV, CONBLOC INFRATECNO, MARGA LINGKAR JAKARTA
The
Jakarta, Indonesia JORR W2 Toll Road project is the result of research and development
of a novel and unique reacted and activated rubber dry powder (RARX)
consisting of chemically prepared granulates of scrap tire crumb rubber.
Consulpav researched and developed RARX, which when mixed with hot asphalt
instantly make rubberized asphalt with superior elastic properties which
prevent cracking, improve durability and age more slowly. These benefits of
reacted an activated crumb rubber were shared with CONBLOC INFRATECNO an
Indonesian contractor. CONBLOC INFRATECNO was interested in this new
product potential to address many of the pavement performance issues in
Indonesia. They recognized that pavements in Indonesia are subjected to
extremely high rainfall and ultra violet radiation which promote rapid
pavement deterioration, as evidenced in cracking and potholing occurring in
as little as two to three years after paving. They reviewed the RARX
development in Portugal and agreed to support a very short length test
section in Jakarta, Indonesia, to see whether the RARX could be successfully
used in Indonesia and perform as claimed. This trial pavement test section
was constructed on an arterial road, with heavy truck traffic, at a turning
intersection and performed as predicted, no cracking or potholing.
Jakarta,
Indonesia, JOR W2 Toll Road Project
Rubberized
asphalt RARX pavement under traffic
After the
success of this trial section CONBLOC INFRATECNO and Consulpav approached
the JORR W2 Toll Road authority, MARGA LINGKAR JAKARTA, about using RARX to
overlay a recently built concrete toll road (100000 vehicles per day/15%
trucks) that had badly cracked after only three years of service. The Toll
Road authority reviewed the CONBLOC INFRATECNO/Consulpav pavement overlay
proposal. This proposal consisted of placing a RARX rubberized asphalt seal
coat membrane layer 19 mm thick, followed by a 50 mm RARX-Gap graded
asphalt hot mix on top of the 250 mm concrete cracked pavement. Both of
these layers consisting of RARX represented a major challenge to construct
on the scale proposed by this project. Equipment had to adapted to mix and
apply the rubberized asphalt for the seal coat, a new mix design process
was needed for the asphalt hot mix and new specifications for the material
quality control had to be created for this first of its kind use.
The project
was constructed in March 2017 with goal of providing a five year
maintenance free life. The Toll Authority for comparative purpose had an
adjacent cracked concrete pavement section overlaid with a typical
Indonesia hot mix of the same thickness without the RARX. The adjacent
regular hot mix section has multiple potholes and extensive cracking,
whereas the RARX project has been a complete success with virtually no
cracking or potholing to date. The project success relied on all three
parties Consulpav, CONBLOC INFRATECNO and MARGA LINGKAR JAKARTA to support
the use of a newly researched and developed reacted and activated rubber
dry powder, RARX. The use of RARX provided improved pavement structure
properties to reduce cracking, reduce the effect of UV damage, provide a
water proof membrane seal coat and provide a long life pavement structure
with improved elastic properties.
“ Winning
the IRF Global Road Achievement Award (GRAA) in the research
category for the Indonesia JORR W2 Toll Road project means the following
for each participating organization; for Consulpav recognition of the years
of research and development of the reacted and activated rubber dry powder
(RARX) and recognition of the superior elastic properties it imparts to the
pavement structure; for CONBLOC INFRATECNO a recognition as a leader in
Indonesia and other Asian countries of practically applying the results of
innovative research to a valuable new and useful asphalt paving product and
for MARGA LINGKAR JAKARTA a recognition of its management skills to
carefully review the research supporting the new innovation to better
maintain its vital toll road investment for the benefit of the roadway
users.”
