Highway Research Record No. 39 - Indian Roads Congress

present Status and progress
Marshal Mix design of Bituminous Concrete, Semi
Dense Bituminous Concrete and Dense Bituminous
Macadam using ordinary aggregate and waste plastic
coated aggregate is done and the results are compared.
Dry mixing is adopted for prepration of modified mix. Test
stretches are resurfaced using modified mix with plastic
coated aggregates and control section using ordinary
aggregates. Periodical evaluation of the test stretches
is done. Both functional and structural evaluation is
done. Condition survey, roughness, skid resistance
and texture depth studies were done and the results
are compared. More demonstration stretches are laid
in collaboration with local bodies using modified mix
with waste plastic coated aggregates.
Status: On-going
Further Findings/ Supporting Data
It was found from the studies that the optimum binder
content gets reduced by using modified mix in all types
resulting in savings in bitumen. The stability increases
by 1.2 times for DBM and 1.5 times for BC and SDBC.
Aggregates coated with plastic waste showed zero
stripping even after 72 hours of soaking. Roads laid
with modified mix showed delayed distress.
Reports/ Publications
Final Report submitted to Chief Engineer (local Self
Govt Dept)
Further information/Copy of report can be obtained
from
Director, National Transportation Planning and
Research Centre, Sasthra Bhavan, Pattom Palace P. O.,
Thiruvananthapuram- 695 004, Mobile: 9446342828;
phone: 0471- 2548300, 2543678, Fax: 0471-2543677,
e-mail ID: bgsreedevi@yahoo.com
6. Study to Prevent Reflecting Cracks on
Bituminous Overlay over Cracked Concrete
Pavement using Geotextile
Date of start: May 1999
Date of completion: January 2011
Gujarat Engineering Research Institute (GERI),
Vadodara
Present status and progress
Status: Completed
Year of Last Report: 2009-10
progress: Completed
ROAD RESEARCH IN INDIA 2011-12 15
Further Findings/ Conclusions/Supporting Data
The careful study of the field data collected during the
periodic observations indicated that the deflection, the
total distress and the serviceability index over a period of
time are minimal in Geotextile test sections as compared
to the control panel. Since all the above parameters are
measure of the performance and structural capacity
of road pavement, the results clearly indicate that the
inclusion of a Geotextile can improve the performance
of the road pavement possibly due to its ability to
reinforce and strengthen the pavement and to control
the degradation of structural behavior of pavement as
compared to pavement without Geotextile.
Report / Publications
Final Report submitted to Govt. of Gujarat vide GERI
office letter No. JD(R)/PB/12/ ‘ of 2011. Dt. : 07 : 01 :
2011
Further information / copy of report can be obtained
from
Road Research Division-1, Gujarat Engineering
Research Institute (GERI), Race course, Vadodara-
390007, phone : 0265 2313413-14-15 Fax : 0265
2313416, e-mail ID: rorrd12006@rediff.com
7. “Asphaltoseal” (Asphalt to Seal Mastic Pad)
Date of Start : June, 2007
Tiki Tar Industries (Baroda) Limited (R, C).
Methodology
i.
ii.
The surface must be completely free of dust, oil,
protruding nibs, nails etc.
A coat of Tiki Primer is to be applied at
200-300 g/m2 (Primer is to be mixed with
water in 1:1 ratio) and must be allowed to dry
completely.
iii. ASPHAlTOSEAl rolls are lined up and spread
near to the area to which they are to be
fixed with overlapping by minimum 50 cm.
ASPHAlTOSEAl is then to be rolled back without
changing its orientation.
iv. Unroll half of ASPHAlTOSEAl and heat
underside evenly and sufficiently to cause
surface melting. Proper care should be taken
that heated roll is pressed simultaneously
and impression of the concrete deck be
reflected irrespective of unevenness.
v.
vi.
Side overlap of each roll should be sealed
properly, also, end overlap joints.
No tack coat is required above
ASPHAlTOSEAl.