modified bitumen
TRANSCRIPT
Premium Road Binders
POLYMER MODIFIED BITUMEN TECHNOLOGY
Hindustan Colas Technical Centre
The most preferred road
Safe, comfortable, convenient & pleasant to ride
Hindustan Colas Technical Centre
2
Performances with low capital and maintenance cost
The most preferred road
Hindustan Colas Technical Centre
3
The most preferred road
Hindustan Colas Technical Centre
4
Major road defects
Hindustan Colas Technical Centre
5
Major road defects
Hindustan Colas Technical Centre
6
� Climatic conditions
- Improved balance between low T and high T properties
� Increasingly aggressive traffic conditions
- Heavy vehicles- Slower traffic- Increasing axle loads & tyre pressures- Fuel spillage- Harder grades might increase the risk of low temperature cracking
The Need For Premium Binders
Hindustan Colas Technical Centre
7
- Harder grades might increase the risk of low temperature cracking- Need for improved fatigue resistance and flexibility- Need to improve cohesion and adhesion properties
� Economic issues
- More durable pavement, longer lasting investments
- Development of thinner pavements
The Need For Premium Binders
The performances of the Binders v/s the performances of the Pavement
Hindustan Colas Technical Centre
8
Bitumen Properties Asphalt Mix Performances Pavement Characteristics
The Need For Premium Binders
The performances of the Binders v/s the performances of the Pavement
Hindustan Colas Technical Centre
9
Good Roads Appropriate Asphalt Mixes Suitable Asphalt Binders
The need to tailor the solution to the needs of the owners and those of the end users
Hindustan Colas Technical Centre
10
Pavement Performance
�Rheology�Cohesion, Adhesion�Elasticity�Temperature susceptibility�Moisture Sensitivity
Decrease the viscosity of the
Hindustan Colas Technical Centre
11
Decrease the viscosity of thebitumen at low service temp
- Brings flexibility to theasphalt mix
Increase the viscosity of the bitumenat high service temp
- Improve Rutting Resistance
Modifier Modifier Types
� Be compatible with Bitumen� Blend with Bitumen properly & thoroughly� Maintain properties during storage, application and in service� Be cost effective considering life cycle cost� Be capable of being processed by
Hindustan Colas Technical Centre
12
� Be capable of being processed by conventional mixing plants and laying machinery
Elastomers +++ +++ +++ ++ +++
Permanent Deformation
Thermal Cracking
Fatigue Cracking
Moisture Damage
Ageing
Performance Comparison
Hindustan Colas Technical Centre
13
Elastomers +++ +++ +++ ++ +++
Plastomers ++
Crumb Rubber
++ ++ +
Hydrated Lime
++ ++
HINCOL CRMB 60
HINCOL PMB 40
HINCOL RW 4560
Softening Point > 60 > 60 > 85
Elastic Recovery > 70 > 75 > 85
Performance Comparison
Hindustan Colas Technical Centre
14
Elastic Recovery > 70 > 75 > 85
Penetration < 50 30 - 50 40 – 60
Elastic Modulus @40C, MPa
2000 3000 5000
Styrene – Butadiene - Styrene copolymers (SBS)
hard polystyrene domains
soft, flexible polybutadienechains
Hindustan Colas Technical Centre
15
� Butadiene (of SBS) absorbs the maltene phase: swells up
till nine times its initial volume
� R&B = f ( % SBS) : S-type curve
⇒⇒⇒⇒ elastic and high strength tridimentional network in bitumen molecules improve the binder properties
30
40
50
60
70
80
90
0 3 5 7
% SBS
R&B (°C)
PmBs Characterisation versus specifications
• standard tests
� penetration (25 °C and 40 °C), R&B
• physical & chemical analysis
� IR, NMR, SEC, DSC, Microscopy
Hindustan Colas Technical Centre
16
� IR, NMR, SEC, DSC, Microscopy
• simulation of ageing / storage stability
� RTFOT, PAV, storage stability
• rheological tests
� viscosity, DSR, BBR, elastic recovery, tensile test (DTT, force-ductility)
Ductility @ 25 deg cOr Elastic Recovery
Storage stability of PmBs
�Compatibility between bitumen/polymer
(polymer type and content, bitumen nature)
�Storage conditions: duration, temperature, mixing
systems
�UV-Fluorescence microscopy and Delta R&B
top/bottom
a b
c d
Hindustan Colas Technical Centre
17
a compatibleb, c semi-compatible
d incompatible
d
Mix testing
• High temperature performance: Wheel Tracking Test
LCPC WTT : According to the French standard, rutting depth measured must be
less that 10 % after 30,000 cycles at 60 °C.
Hindustan Colas Technical Centre
18
Asphalt Slab
30 000 cycles
Rutt depth
Asphalt Slab
Rutting performance: Wheel Tracking Test
Dense Asphaltic Concrete - 40oC
60 / 70 Bitumen
Hindustan Colas Technical Centre
19
Moderately Modified PMB
Heavily Modified PMB
100 pen + 3%SBS
100 pen
Rutting performance: Wheel Tracking Test
Dense Asphaltic Concrete - 40oC
Hindustan Colas Technical Centre
20
0 10 20
100 pen + 7%SBS
100 pen + 5%SBS
rutting rate (mm/105 wheel passes)
BC – VG 30
Rutting performance: Wheel Tracking Test
Hindustan Colas Technical Centre
21
BC – CRMB 60
BC – PMB 40
Good elasticity Good elasticity which reduces the tendency for pavements to crack, -durability.
Higher softening point Higher softening point to resist permanent deformation without adversely affecting the properties of bitumen, durability.
Improved adhesion Improved adhesion and cohesioncohesion properties for more durable asphalt, durability.
Hindustan Colas Technical Centre
22
Lower temperature susceptibility Lower temperature susceptibility for better performance in both high and low temperature environments, durability.
Easy handling Easy handling without major plant change and ease of stock management, adaptability.
Storage stable Storage stable due to compatible blend of bitumen and polymer that reduces likelihood of material drifting off-spec during storage, reliability.
°c
60
70
HINCOL PMB 40Softening Point
Spec
Hindustan Colas Technical Centre
50 Comp 1
Comp 2
Comp 3
50
60
70
80
90
HINCOL PMB 40
Comp 1Comp 3
Elastic Recovery Spec
Hindustan Colas Technical Centre
24
50 Comp 1
Comp 2
Comp 3
Why HINCOL as a preferred partner� Joint venture company of a leading PSU, HPCL
� Technical knowhow from world’s no 1 construction company , Colas
� Strong Research & Development
� Strong network within Colas Community and with External agencies
� Quality Commitment (Far exceeding min spec limits)
� Wide network of manufacturing facility across India
� Delivery Promise
Hindustan Colas Technical Centre
� Delivery Promise
� Delivered to Customer Model (supply chain management)
� Technical Services
� In-house Mix Design
� Application Support
� Training : Supervisor/Foreman training on Product
Handling/Application/storage
“We can’t spell Success without
U”
Hindustan Colas Technical Centre
26