Performance Evaluation of Hot Mix Asphalt with Recycled Asphalt Pavement using Rejuvenator. Rejuvenator enhances the binder properties of ecycled asphalt and gives good results.

1. “PERFORMANCE EVALUATION OF
HOT MIX ASPHALT WITH RAP
USING REJUVENATOR”

2. INTRODCTION
 Recycled Asphalt Pavement (RAP) is an old asphalt
pavement that is milled up from existing roadway.
 Insufficient laboratory and field data available,
unclarified design methods and non confidance on
quality are the reasons for not practising.
 RAP can be combined with virgin aggregates, new
binder or recycling agents to produce a recycled mix.
 RAP can be added to both HMA and WMA.
 Evaluations have concluded that using RAP shows
the same performance or sometimes more than that of
performance of usual virgin pavement.

3. LITERATURE REVIEW
SL NO AUTHOR RAP TESTS OUTCOME
1.
Ahmed Mohamady,
Hoseny Abdallah ,
et al,,
0%,10%,20%,
25%,30%, 40%
RAP without RA.
Marshall Stability
Test,
Indirect Tensile
Strength Test.
The optimum asphalt
content is decreased
as the RAP %
incresed.
30% RAP mix
suitable for pavement
construction .
2.
T.Anil Pradyumna,
Abhishek Mittal,
Dr.P.K.Jain
20% RAP with
10% RA by wt of
recovered
bitumen.
Marshal Stability
Test,
ITS,
Creep Test
Fatigue Test,
Resilient Modulous
Resistance to moisture
damage, permanent
deformation & rutting
resistance were
improved by using RAP
mixes and also fatigue
life was improved.
3.
Baoshan Huang,
Xiang Shu ,et al,,
10%,20%,30
RAP without
Rejuvenator.
Binder Rheological
Test.
RAP helps to
reduce the stress
concentration
in HMA mixtures.

4. 4.
Junan Shen, Serji
Amirkhanian, Baming
Tang.
On Binder, Virgin
binder, 0%,2% &
7.4%
Rejuvenator
content in aged
binders.
DSR,
BBR
Fatigue &
shrinkage
parameters
improved.
Rutting
resistance
decreased.
5.
Valdes, Gonzalo et al,, Introduced 40% to
60% RAP
ITS Test,
Fatigue Test,
Stiffness Test
Use of RAP
below 50%
gives good
results.
6. Shan M et al,, 20-50% RAP ITS Test,
Rutting Test,
Fatigue Test.
30% RAP shows
good in ITS Test
& 40-50%
against Rutting.
7. Prithvi S,
Rajib B et al,,
75% RAP ITS Test,
Rutting Test
Good rutting
resistance and
low tensile
strength.

5. OBJECTIVES
 To compare the different RAP mixes with
conventional asphalt mix.
 To compare the performance of RAP mix containing
rejuvenator with the RAP mix without rejuvenator.
 To meet out the standard values after adding
rejuvenator and utilization of RAP.

6. ADVANTAGES OF RECYCLING PAVEMENTS
 Conservation of aggregate & binder.
 Reduce cost of construction.
 It has high rutting resistance.
 It reduces the emissions & fuel usage.
 Conservation of energy.
 Preservation of environment.

7. METHODS OF RECYCLING OF
PAVEMENTS

8. In Place Recycling Central Plant Recycling

9. MATERIAL COLLECTION
1.RAP
The RAP material is collected from Vijayapur –
Hubballi highway (NH 218).

10. 2.AGGREGATES
20mm down 10mm down 6mm down
Aggregates are collected from Kolar stone crushing
plant.

11. STUDY METODOLOGY

12. TESTS ON AGGREGATES
 Aggregate Gradation (Sieve Analysis).
 Aggregate Impact Test.
 Los Angles Abrasion Test.
 Aggregate Crushing Test.
 Shape Test.
a)Flakiness Index Test.
b)Elongation Index Test.
 Specific Gravity and Water Absorption Test.

13. Sieve Analysis Impact Test Specific Gravity
Crushing Test
Elongation Index Test
Flakiness Index Test
Los Angles Abrasion Test

14. TESTS ON BITUMEN
 Ductility Test
 Penetration Test
 Specific Gravity Test
 Viscosity Test

15. Penetration Test Viscosity Test
Ductility TestSpecific Gravity Test

16. REJUVENATOR
 WHAT IS A REJUVENATOR?
Rejuvenator is a chemical which can enhance the
properties of aged bitumen and thereby enables the
use of old bituminous mixes by addition into fresh
mix.
 BENEFITS OF REJUVENATORS:
Increase crack resistance in the HMA.
Improves workability/compaction of the RAP mix
design.
Do not cause continuous age softening of the RAP
asphalt binder which could lead to increased rutting
potential.

17. HOW DOES A REJUVENATOR WORK?
 The goal of any rejuvenator or recycling agent, is to
return the hardened bitumen binder close to its
original visco-elastic state.
 Once the rejuvenator penetrates the surface of the
reclaimed bitumen concrete, the viscosity,
flexibility and brittleness of the binder can be
improved.
 Additionally, they can act as surface sealants,
which minimize the effects of oxidation, moisture
damage thereby extending a pavement’s life.

18. REFERENCES:
 Jim Brownridge,“Rejuvenation of recycled asphalt pavement in
rural road programs”,SEAUPG conference 2006-Wilmington,
North Carolina.
 Ahmed Ebrahim,Abu EI Maaty,“Characterization of recycled
asphalt pavement(RAP) for use in flexible pavement”
American Journal of Engineering and Applied Science.
 Jie Han,Subash C Thakur,Oswald Chong,Robert L Passons
,“Laboratory evaluation of characteristics of recycled asphalt
pavement”,KANSAS,USA.
 Viranta Sharma,Robin Babit,Ajay K Duggal, “Recycling practices
in flexible pavements with the help of RAP & rejuvenators”,
International Journal of Engineering Science Invention Research &
Development (IJESIRP), Vol 3,Issue 1,July 2016
 Junan Shen & Yoshio Ohne, “Determining rejuvenator content
for recycling reclaimed asphalt pavement by SHRP binder
specifications”,International Journal of Pavement Engineering, 19
April 2002.

19.  “Effect of Rejuvenator on HMA mixtures with high
RAP & RAS contents”, National Center for Asphalt
Technology(NCAT).
 Oke,O.L, Aribisala J.O,Ogundipe, O.M, Akinkurolere
O.O, “Recycling of Asphalt Pavement for
accelerated & sustainable road development in
Nigeria”, International Journal of Scientific &
Technology Research, Volume 2,Issue 7,July 2013.
 Taher Baghae Moghaddam, Hassan Baaj, “The use of
rejuvenating agents in production of recycled hot
mix asphalt”, ELSEVIER, Science Direct.
 Junan Shen, Serji Amirkhanian, Boming Tang,“Effects
of rejuvenators on performance based properties
of rejuvenated asphalt binder & mixtures”,
ELSEVIER, Science Direct, 27 March 2006.

20.  Soohyok Im, Fujie Zhou, Robert Lec, Tom
Scullion,“Impacts of rejuvenators on performance &
engineering properties of asphalt mixtures
containing recycled materials” ELSEVIER, Science
Direct, 6 December 2013.
 Martins Zaumanis, Rajib B Mallick, Robert
Frank,“Determining optimum rejuvenator dose for
asphalt recycling based on superpave performance
grade specifications” ELSEVIER, Science Direct, 15 July
2014.
 Arvind K. and Animesh Das, “Bituminous pavement
recycling”,Department of Civil Engineering, IIT Kanpur.
 Ahmed Mohamady et al,, “Effect of using RAP on
asphalt mix performance”,IOSR-JCE,Vol 16,Issue
6,Ver.6,Nov-Dec.2014,PP 55-67.
 T.Anil Pradyumna et al,, “characterization of RAP for
use in bituminous road construction”, ELSEVIER,
Science Direct, 2013.