Quality in the Concrete Paving Process FHWA...
Transcript of Quality in the Concrete Paving Process FHWA...
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Quality in the Concrete Paving Process
FHWA Sustainable Pavements Program: Advancing LCAHeather Dylla Sustainable Pavements Engineer
2017 Pavement LCA Symposium, 4/13/2017
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Presentation Objectives
What is the Sustainable Pavements Program’s Mission?
How does Life Cycle Thinking Fit into the Program?
What is the Future of Life Cycle Thinking in Pavement Design?
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Sustainable Pavements Program Vision & Mission
Advance the Knowledge and Practice of
• Designing
• Constructing
• Maintaining
More Sustainable Pavements
• Stakeholder Engagement
• Education
• Development of Guidance and Tools
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Through
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Initial Focus: Develop Guidelines for Sustainable Pavements
Sustainable Pavements Technical Working Group
Industry
• Engineers
• LCA Professionals
• Material Manufactures
• Construction Contractors
Academia• Pavement Materials
• Construction
Agencies• State Department of Transportation
Agencies
• Local Agencies
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Develop Guidelines
Purpose
• Educate Practitioners
• Encourage Adoption
of Sustainable Practices Throughout a Pavement’sLifecycle
5https://www.fhwa.dot.gov/pavement/sustainability/ref_doc.cfm
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Sustainability in General
Common Definition
• Brundtland Report 1987
• “Development that meets the needs of present without compromising the ability of future generations to meet their own needs”
• Three Pillars of Sustainability
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Social
EconomicEnvironment
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Sustainable Pavements
Definition
• No Universal Definition
• Challenge: Transportation System
Concepts
• achieve engineering goals
• preserve and restore surrounding ecosystems
• use financial, human, and environmental resources economically
• meet basic human needs such as health, safety, equity, employment, comfort, and happiness
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Approaches for Improving Aggregate Production for Pavement Sustainability
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Second Focus: Guidance for Sustainability Assessment
Adapted from GRI
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Sustainability Assessment
Economic Efficiency
• Life Cycle Cost Analysis
• Network and Project Level
Environmental Stewardship
• Life Cycle Assessment
Social Progress
• Social Life Cycle Assessment11
Social
EconomicEnvironment
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Sustainability Assessment
Economic Efficiency
• Life Cycle Cost Analysis
• Network and Project Level
Environmental Stewardship
• Life Cycle Assessment
Social Progress
• Social Life Cycle Assessment12
Social
EconomicEnvironment
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Sustainability Assessment
Economic Efficiency
• Life Cycle Cost Analysis
• Network and Project Level
Environmental Stewardship
• Life Cycle Assessment
Social Progress
• Social Life Cycle Assessment13
Social
EconomicEnvironment
More Research Needed; Long Term Need
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Sustainability Assessment
Economic Efficiency
• Life Cycle Cost Analysis
• Network and Project Level
Environmental Stewardship
• Life Cycle Assessment
Social Progress
• Social Life Cycle Assessment14
Social
EconomicEnvironment
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Pavement LCA History
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Social
EconomicEnvironment
Based on Amlan Mukherjee, SPTWG Gainesville FL
Pavement LCA
WorkshopDavis, CA
2010
Sustainable
Pavements ProgramFHWA Reference
Document
2015
Concrete PCR2013
Pavement LCA
Framework
2016
2017
Asphalt PCR
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FHWA Pavement LCA FrameworkEducate • Agencies on LCA methodology and
application to pavements
• Practitioners on LCA principles as applied to pavements
• Documents current practices and gaps
Technical Guidance
• Implementation of pavement LCA within the U.S
• Description of viable alternatives with pros and cons
Deployment• Encourage Progress in Pavement LCA
16https://www.fhwa.dot.gov/pavement/pub_details.cfm?id=998
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LCA in Policy
Oregon No. 3021• DEQ is sponsoring EPDs for concrete
• Proposed Bill– DOT Create Pilot Program to assess how products procured
affect CO2 emissions
– Environmental Cost
– EPDs
California No. 262• CO2 reporting for Bidding and Awarding of Public
Contract
• EPDs17
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LCA Needs
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End Goal
Currently
Based on Amlan Mukherjee,
SPTWG Gainesville FL
EPDs are a likely vehicle to fulfil the data gaps.
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LCA Needs
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Includes SPTWG Feedback
• Education on LCA, EPDs, PCRs
– Webinars, web-based videos, tech briefs, quick simple talking points
• Examples
• Technical Guidance and Tools
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Sustainable Pavements Program: Immediate and Future Needs
Case Studies• Highlighting Technologies Identified in
the Reference Manual
• Document Environmental, Social, Economic Benefits
EPD Tech Brief
• Educate Agencies and Policy Makers
• What is EPD?
• How can EPDs be used?
LCA Tool
• Help Agencies Benchmark Impacts
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Future Needs: • Pilot study using
FHWA Pavement LCA Framework
• Develop Technical Guidance on How to Incorporate EPD’s
• Develop Pavement LCA Tool