c. mancero, s. biro, c. thodesen: using crumb rubber modifier to meet demand in high performance...
TRANSCRIPT
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8/14/2019 C. Mancero, S. Biro, C. Thodesen: Using Crumb Rubber Modifier to Meet Demand in High Performance Asphalt
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International
Road FederationBetter Roads, Better World
www.irfnews.org
Using Crumb Rubber Modifierto Meet Demand in High
Performance Asphalt
Cecilia Mancero, Szabolcs Biro
& Carl Thodesen
ECOPATH Industries
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International
Road FederationBetter Roads, Better World
www.irfnews.org
CRM binders Crumb rubber modified binders are NOT all
the same.
They can satisfy differentstandards/requirements by changing the
production parameters and raw materials
(asphalt, rubber, additives).
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8/14/2019 C. Mancero, S. Biro, C. Thodesen: Using Crumb Rubber Modifier to Meet Demand in High Performance Asphalt
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International
Road FederationBetter Roads, Better World
www.irfnews.orgTemperature,
oC
0 20 40 60 80 100
Ela
sticityindicato
r(tan
)
0
1
2
3
4
5
6
7
8
AZ
CA
FL
SC
TX
CRM Binder vs. CRM Binder
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International
Road FederationBetter Roads, Better World
www.irfnews.orgTemperature,
oC
0 20 40 60 80 100Ruttingpo
tentialindicat
or(G*/sin,
Pa
)
1e+2
1e+3
1e+4
1e+5
1e+6
1e+7AZ
CA
FL
SC
TX
CRM Binder vs. CRM Binder
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International
Road FederationBetter Roads, Better World
www.irfnews.org
Vehicle speed indicator (Frequency, rad/s)
0.01 0.1 1 10 100 1000Ruttingpo
tentialindicator(G*/sin,
Pa
)
1e+1
1e+2
1e+3
1e+4
1e+5
1e+6
AZ
CA
FL
SCTX
Neat binder
CRM Binder vs. CRM Binder
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International
Road FederationBetter Roads, Better World
www.irfnews.org
CRM binder Not just the rubber concentration, gradation, but
chemical composition has an effect.
Importance of asphalt chemical composition.
CRM binder formulation is needed to obtain the
best result & reduce cost.
Thin layers can be constructed because of improved
binding properties.
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International
Road FederationBetter Roads, Better World
www.irfnews.org
Thinner Overlays
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International
Road FederationBetter Roads, Better World
www.irfnews.orgTime, s
0 10 20 30 40 50 60
Strain,%
0
5
10
15
20
CRM-AZ
Elvaloy
EVASBS+CRM
SBS+PPA
SBS
Elasticity
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International
Road FederationBetter Roads, Better World
www.irfnews.org
Time, s
0 20 40 60 80 100 120
Strain
0
20
40
60
80 AR (AZ)
Elvaloy
EVA
Hybrid
SBS_PPA
Elasticity
70oC, 3200Pa
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International
Road FederationBetter Roads, Better World
www.irfnews.org
CRM vs. other modifiers
Crumb rubber modified binders can be both technically
and economically a good substituent for SBS and other
elastomer/plastomer modified asphalts.
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International
Road FederationBetter Roads, Better World
www.irfnews.org
Overhead View of Plant Site
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Road FederationBetter Roads, Better World
www.irfnews.org
Modified Asphalt Blending Equipment
15-20 TPH Blending System
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Road FederationBetter Roads, Better World
www.irfnews.org
Projects
Less than ideal roadway condition
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Road FederationBetter Roads, Better World
www.irfnews.org
10.6 miles (19.4 km)
58,250 Mix Tons
1,140 Tons Crumb Rubber
Arizona
i l
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Road FederationBetter Roads, Better World
www.irfnews.org
4.3 Miles
9,200 Mix Tons
190 Tons Crumb Rubber
Biosphere 2
Tucson, Arizona
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Road FederationBetter Roads, Better World
www.irfnews.org
Pulliam Airport
Flagstaff , Arizona
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Road FederationBetter Roads, Better World
www.irfnews.org
New Jersey / I-95 Before
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I t ti l
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International
Road FederationBetter Roads, Better World
www.irfnews.org
I-95 During Construction
I t ti l
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Road FederationBetter Roads, Better World
www.irfnews.org
After Construction
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Road FederationBetter Roads, Better World
www.irfnews.org
Washington State
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Road FederationBetter Roads, Better World
www.irfnews.org
Quiet Pavement Project in DOT en
Washington State
International
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International
Road FederationBetter Roads, Better World
www.irfnews.org
Spain
International
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International
Road FederationBetter Roads, Better World
www.irfnews.org
Siberia
International
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Road FederationBetter Roads, Better World
www.irfnews.org
Siberia
International
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Road FederationBetter Roads, Better World
www.irfnews.org
Conclusions Crumb rubber improves asphalt binder properties.
Not all crumb rubber modified asphalt (CRMA)
are the same.
CRMA can substitute and compete with other
modifiers if right formulation is applied (raw
materials + production parameters).
International
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International
Road FederationBetter Roads, Better World
www.irfnews.org
Conclusions CRMA have better elastic (shear) characteristic
than most of the common asphalt modifiers.
Out of the common crumb rubber modified
asphalts, Arizona style has the best performance
(except aging, where California style AR is the
best).
International
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International
Road FederationBetter Roads, Better World
www.irfnews.org
Conclusions ECOPATH has become a leader in the
industry and provides asphalt binder
formulation to reduce cost and optimize
performance.
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International
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International
Road FederationBetter Roads, Better World
www.irfnews.org
International
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International
Road FederationBetter Roads, Better World
Conclusions SAVES MONEY!
Initial investment Life cycle costs
Noise abatement alternatives
FEWER TRAFFIC INTERRUPTIONS! Extends pavement life 15+ years
SAVES LIVES! Greatly improves driving conditions
IMPROVES QUALITY OF LIFE! Reduces traffic noise Eliminates waste tyres
NO RISK! 20+ yrs of proven technology in all types of climates