10 amarjeet benipal
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California Asphalt Pavement Association 2013 Spring Conference
Amarjeet S. BenipalState Pavement Engineer
April 25, 2013
12 distinctly different Caltrans Districts with varying needs
Pavement Inventory
16,400 lane miles Urban Areas 70% Rural Areas 30%
Concrete Asphalt
33,200 lane miles Rural Areas 70% Urban Areas 30%
3
2011 State of the Pavement
Caltrans Pavement Objectives
1. Sustainability
2. Asset Management
3. Worker Safety
4. Future Financial Trends
What is Sustainability?“Meeting the needs of the present without compromising the ability of future generations to meet their own needs” World Commission on Environment and Development, 1987
How Is Caltrans Being Sustainable?By building pavements to last multiple generations, with as much recycled material as possible.• Quality & Performance• Cost Effectiveness
Caltrans Sustainable Pavement Initiatives Efforts
1. Planning
2. Design
3. Materials & Technologies
4. Preservation
Sustainability – PlanningLife Cycle Cost Analysis (LCCA)
Life Cycle Cost Analysis - Design
Analysis done to find the most cost effective pavement based on cost associated with:
Initial Cost
Maintenance Cost
Anticipated Rehabilitation
Cost
User Delay
Sustainability – DesignLong-Life Pavement
1. Asphalt Pavement Asphalt: I-710, I-5, I-80 etc2. Concrete Pavement
a. Jointed Plain b. Continuously Reinforcedc. PrecastConcrete: I-680, I-710, I-15 etc
Sustainability – Materials & Technologies
1. Rubber Hot Mix Asphalt (RHMA)2. Pavement (RAP) / Recycled Asphalt
Shingles (RAS)3. Warm Mix Asphalt (WMA)4. Recycle Concrete Aggregates5. Supplementary Cementious Materials
Sustainability – Materials & Technologies
6. Cold In-Place Recycling (CIR)7. Full Depth Recycling (FDR)8. Porous Pavement
– Asphalt & Concrete9. Smooth Pavement10. Quiet Pavement
Rubber Hot Mix Asphalt (RHMA) RHMA been successfully used in CA for over 30 years. CA generates more than 44 million scrap tires every year. A two-inch RHMA overlay uses about 2,000 scrap tires per
lane mile.
15.610.9
5.9
15.717.9
34.2
30.4
36.329.5
23.630.5 34.7
0
10
20
30
40
50
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
Amou
nt o
f RH
MA,
per
cent
Calendar year
35
2520
AB 338 Goals
Recycled Asphalt Pavement (RAP) & Recycled Asphalt Shingles (RAS)
Adds recycled asphalt pavement to HMA mix Pilot projects in 2012/2013. Caltrans supports RAP because it is:
Cost effective.Reduces the aggregate use preserving landfill space.Reduces green house gases emissions.
Warm Mix Asphalt (WMA)Accomplishment: One Million Tons Paved
RHMA-G
OGFC
RHMA-O
DGAC
Recycled Concrete Aggregate (RCA)
Used as Base Materials Development of new and revised standards Use of available materials
Supplementary Cementious Materials
Cold In-Place Recycling
Full Depth Recycling
Pervious Pavement Porous Asphalt Pervious Concrete
Cited in three Leadership in Energy and Enviornmental Design (LEED) credits under Sustainable Sites: 5.1 6.1 6.2
Smooth Pavement
1. Fuel Efficiency
2. New Construction at IRI 60 or less
3. Use of Inertial Profiler
Quiet Pavement
1. Quality of Life2. Both Asphalt & Concrete Pavements
a. Open Grade Friction Course (OGFC)b. Grindingc. New Generation Groove / Grind
Focus on Pavement Preservation Increase efficiency of project selection:
Right pavement strategy at the right time
Age
Pav
emen
t co
nd
itio
n
Preservation @ $1
Rehabilitation @ $6
Reconstruction @ $20
Optimized Preservation Plan
Preservation Plan
Unattended Pavement
0
75
25
50
100
Rehabilitation
Corrective Maintenance
Reconstruction
Preventative Maintenance
Fair
Good/Excellent
Poor
Pav
emen
t C
on
dit
ion
In
dex
Time (Years)
0 302010
Asset Management
Worker Safety
• Select the Right Strategy– Quality Assurance– Longer Lasting– Would Not Have
to Come Back to Repair or Fix It
– Less WorkerExposure to Traffic
On-System Allocations and Projected Allocations(Adjusted for Construction Cost Index, in 11-12 dollars)00-0
1
01-02
02-03
03-04
04-05
05-06
06-07
07-08
08-09
09-10
10-11
11-12
12-13
13-14
14-15
15-16
16-17
0
1,000,000
2,000,000
3,000,000
4,000,000
5,000,000
6,000,000
Local Bond Other Capacity Increasing SHOPP
Allo
catio
ns ($
1,00
0s)
SHOPP
Other
Bond
Local
Actual Projected
Efficiently Managing California Roads!Thank You
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