Using Cost Mix Design Construction And Performance Data To Inform Hot Mix Asphalt Pavement Policy And Standards
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Using Cost Mix Design Construction And Performance Data To Inform Hot Mix Asphalt Pavement Policy And Standards
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Author : Ryan A. Howell
language : en
Publisher:
Release Date : 2019
Using Cost Mix Design Construction And Performance Data To Inform Hot Mix Asphalt Pavement Policy And Standards written by Ryan A. Howell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Pavements, Asphalt categories.
This dissertation integrates and assesses in-service hot mix asphalt pavement data from several typically available but disconnected data sources to inform pavement policy and specification development. This in-service pavement data approach captures connected pavement data from different stages of pavement projects (e.g. mix design, construction, performance after completion) to better understand the relationship between actual in-service performance and mix design, structural design, and construction variables. The dissertation addresses the following research question: what is the value of the in-service pavement data approach in developing hot mix asphalt pavement policy and specifications? To test this question, the dissertation applies this approach using data from 2007 to 2017 to investigate several current Washington State Department of Transportation (WSDOT) research questions. Using the in-service pavement data approach, WSDOT pavement performance questions regarding (1) 3/8-inch versus 1/2-inch nominal maximum aggregate size (NMAS) mixtures, (2) the influence of elevated in-place density mixtures and other mixture characteristics, and (3) high-reclaimed asphalt pavement (RAP) (> 20%) versus up-to-20%-RAP mixtures are analyzed. High level findings include: (1) there is no statistical evidence to suggest a difference in performance between 3/8-inch and 1/2-inch NMAS mixtures; however, the cracking/rutting performance of 3/8-inch NMAS mixtures may be trending higher for older mixtures (ages 9-10); (2) there is no field evidence to suggest an apparent trend between elevated density and increased cracking/rutting performance; however, fine-graded mixture cracking performance may be trending higher than coarse-graded mixtures for older contracts (ages 8-10) and no contracts with a density of 94% or higher perform poorly ([less than or equal to] 50 cracking/rutting condition value); and (3) there is no statistical evidence to suggest a difference in performance between high-RAP (> 20%) and up-to-20%-RAP mixtures. Ultimately, the in-service pavement data approach is a repeatable framework that can be used to better understand the relationship between actual in-service performance and mix design, structural design, and construction variables. Additionally, it is generalizable to any field with large data sets on in-service pavements (e.g. airfields, highways, etc.). Towards this end, the in-service pavement data approach and high-level findings of the WSDOT case studies may be applicable to the U.S. Air Force pavement program.
A Manual For Design Of Hot Mix Asphalt With Commentary
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Author :
language : en
Publisher: Transportation Research Board
Release Date : 2011
A Manual For Design Of Hot Mix Asphalt With Commentary written by and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Asphalt concrete categories.
A Functionally Optimized Hot Mix Asphalt Wearing Course
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Author : Kevin K. McGhee
language : en
Publisher:
Release Date : 2009
A Functionally Optimized Hot Mix Asphalt Wearing Course written by Kevin K. McGhee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Pavements, Asphalt categories.
The purpose of this report was to highlight the preliminary findings of the design, production, placement, and early life performance of a new generation open-graded surface course (also referred to as porous friction course [PFC]) for use in Virginia. The primary objective of the larger research project is the design of a functionally optimized hot-mix asphalt wearing course. This report documents important aspects of the mix design and construction and the initial functional quality of the new surface. General observations associated with the trial section and normal production and placement activities are accompanied by a summary of the quality characteristics of the material. Special emphasis is placed on the very early life functional characteristics of the new wearing course. Among these key characteristics are ride quality, skid resistance, and tire-pavement noise. Observations made during trial production and placement led to "lighter" recommended application rates and reduced temperatures. Preliminary functional tests indicated that the PFC is exhibiting exceptional early-age skid resistance, incentive-quality smoothness, and low tire-pavement noise. On the basis of initial cost and early-life functional performance, the PFC is cost-competitive with traditional mixes placed at traditional application rates (when those mixes are used for functional rather than structural improvement). The report includes (as an appendix) a revised special provision for PFC that incorporates the recommendations pertaining to mix production and placement. It encourages Virginia Department of Transportation pavement engineers to consider a PFC when lower noise, exceptional skid resistance, and good ride quality are desired and additional structure is not necessary. However, it also cautions against widespread application of the technology until at least a final report on performance can be issued. The projected completion date for this report is winter 2010. In the absence of long-term performance data, the costs and benefits assessment is focused on initial costs and initial performance criteria. As a wearing course only, the PFC is $0.28 per square yard cheaper than a comparable dense-graded mix ($5.08 versus $5.36) if both mixes are placed at the normally recommended application rates. The PFC further offers the quantified benefits of much greater skid resistance and noticeably lower noise production. The additional advantages of reduced splash and spray are acknowledged but not quantified.
The Handbook Of Highway Engineering
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Author : T.F. Fwa
language : en
Publisher: CRC Press
Release Date : 2005-09-28
The Handbook Of Highway Engineering written by T.F. Fwa and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-09-28 with Technology & Engineering categories.
Modern highway engineering reflects an integrated view of a road system's entire lifecycle, including any potential environmental impacts, and seeks to develop a sustainable infrastructure through careful planning and active management. This trend is not limited to developed nations, but is recognized across the globe. Edited by renowned authority
Framework For Development Of Performance Related Specifications For Hot Mix Asphaltic Concrete
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Author : David A. Anderson
language : en
Publisher: Transportation Research Board
Release Date : 1990
Framework For Development Of Performance Related Specifications For Hot Mix Asphaltic Concrete written by David A. Anderson and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Technology & Engineering categories.
Superpave Mix Design
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Author : Asphalt Institute
language : en
Publisher:
Release Date : 2001-01-01
Superpave Mix Design written by Asphalt Institute and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-01-01 with Asphalt categories.
High Performance Hot Mix Asphalt Pavements For Intersections
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Author : Timothy Aschenbrener
language : en
Publisher:
Release Date : 1995
High Performance Hot Mix Asphalt Pavements For Intersections written by Timothy Aschenbrener and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Pavements categories.
A program has begun in Colorado to prove that HMA pavements can be effectively constructed at intersections and provide significant benefits to the owner. To many highway agencies, performance, construction speed, and cost are the three key issues to consider when rehabilitating or reconstructing high traffic intersections. Therefore, demonstration projects were organized by the Colorado Asphalt Pavement Association (CAPA) to demonstrate performance, construction speed and cost advantages over PCC pavements at high traffic intersections in Colorado. This paper documents the planning, design, and construction processes that were followed to successfully build an HMA pavement at an intersection carrying over 7.7 million 18 kip (8200 kg) ESALs for a 20-year design.
Constructing High Performance Asphalt Pavements By Improving In Place Pavement Density
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Author : Vikas Kumar
language : en
Publisher:
Release Date : 2021
Constructing High Performance Asphalt Pavements By Improving In Place Pavement Density written by Vikas Kumar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Asphalt concrete categories.
Increasing the density of asphalt concrete materials is expected to result in significant economic and environmental benefits by increasing asphalt mix strength and reducing cracking and rutting. In addition, reduced air-void content is expected to reduce permeability and moisture-induced pavement damage. Reduced permeability is also expected to reduce asphalt mix aging in the field and mitigate top-down cracking, which is currently the most critical distress type in Oregon. Improved cracking performance is expected to result in reduced life cycle costs, increased pavement condition ratings, and reduced roughness for the Oregon roadway network. This research study provided information and guidelines for ODOT to implement in asphalt mixture design to achieve high density and better compactibility during construction. Current Contractor Mix Design guidelines (suggested limits for filler contents, gyration levels, etc.) are expected to be modified based on the findings of this research study. Pilot sections with high densities (95-96%) were suggested to be constructed by using the asphalt mixes designed by following the findings of this research study. Long-term performance of pilot sections should be monitored by automated pavement condition surveys (performed every two years by ODOT) to further evaluate the impact of high density on rutting and cracking resistance. Using the results of this study, cost and performance benefits of using high-density mixes were quantified by life-cycle cost analysis (LCCA). Environmental impact of using warm-mix asphalt and increased recycled asphalt pavement (RAP) content strategies on compactibility and cracking resistance was also quantified and evaluated by using pavement life-cycle assessment (LCA).
Improved Mix Design Evaluation And Materials Management Practices For Hot Mix Asphalt With High Reclaimed Asphalt Pavement Content
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Author : Randy Clark West
language : en
Publisher: Transportation Research Board
Release Date : 2013
Improved Mix Design Evaluation And Materials Management Practices For Hot Mix Asphalt With High Reclaimed Asphalt Pavement Content written by Randy Clark West and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Pavements, Asphalt categories.
TRB's National Cooperative Highway Research Program (NCHRP) Report 752: Improved Mix Design, Evaluation, and Materials Management Practices for Hot Mix Asphalt with High Reclaimed Asphalt Pavement Content describes proposed revisions to the American Association of State Highway and Transportation Officials (AASHTO) R 35, Superpave Volumetric Design for Hot Mix Asphalt, and AASHTO M 323, Superpave Volumetric Mix Design, to accommodate the design of asphalt mixtures with high reclaimed asphalt pavement contents.
Mix Design Practices For Warm Mix Asphalt
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Author : Ramon Francis Bonaquist
language : en
Publisher: Transportation Research Board
Release Date : 2011
Mix Design Practices For Warm Mix Asphalt written by Ramon Francis Bonaquist and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Science categories.
TRB's National Cooperative Highway Research Program (NCHRP) Report 691: Mix Design Practices for Warm-Mix Asphalt explores a mix design method tailored to the unique material properties of warm mix asphalt technologies. Warm mix asphalt (WMA) refers to asphalt concrete mixtures that are produced at temperatures approximately 50°F (28°C) or more cooler than typically used in the production of hot mix asphalt (HMA). The goal of WMA is to produce mixtures with similar strength, durability, and performance characteristics as HMA using substantially reduced production temperatures. There are important environmental and health benefits associated with reduced production temperatures including lower greenhouse gas emissions, lower fuel consumption, and reduced exposure of workers to asphalt fumes. Lower production temperatures can also potentially improve pavement performance by reducing binder aging, providing added time for mixture compaction, and allowing improved compaction during cold weather paving. Appendices to NCHRP Report 691 include the following. Appendices A, B, and D are included in the printed and PDF version of the report. Appendices C and E are available only online.