1. No category

ANALYTICAL
INVESTIGATION
Understanding the physical phenomena
 Development of a fundamental model
 Examine sensitivity of factors
 Perform laboratory based simulation
 Carry out model verification
 Main assumptions and theory

Sand Layer
Case 2
F
Case 1
F
t
a
a
P
s
3
R= K (Ep/Es) (t/a)
R2 > R1
T
s
R < 1 case of ?
R = 1 Case of Stable
R > 1 Case of ?
Development of Solution
Preliminary lab prototype
 Laboratory evaluation under controlled
conditions
 Refinement of fundamental and analytical
verification
 Design drawings for full-scale prototype
 Fabricate full-scale prototype

New Roller and Overlay System
Roverlay = 
Rroller = 
Rubber belt
Overlay
Existing Pavement
New Technology Asphalt Rollers
Asphalt Multi-Integrated Roller (AMIR)
 Hot Iron Process Asphalt Compaction
(HIPAC)
 Field and laboratory testing

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
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Equal or higher densities (less number of passes)
Less density variation
Lack of construction cracks
Lower surface permeability
Higher tensile strength and fatigue life
AMIR Laboratory Model
AMIR-1 Full Scale Prototype
AMIR Section
Permeability Test
Steel to AMIR
7 to 1
Steel Section
AMIR Concept
compactive energy uniformly distributed over
the contact area;
•
Stiffness of AMIR system compatible with
Inventor:
Prof. Halim
stiffness of HMA;
•
Sustained compactive effort (up to 30 times longer)
for each roller pass
Anticipated Result?
•
More efficient compaction with no cracking
AMIR Laboratory Model
•
HIPAC Commercial Unit