National Cooperative Highway Research Program NCHRP Research for Improved Pavement Design and Constr

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National Cooperative Highway Research Program
(NCHRP) Research for Improved Pavement Design
and Construction

• December 2006

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NCHRP- National Cooperative Highway Research
Program

• An AASHTO program sponsored by state DOTs
• Started in 1962
• Annual funding 35 million/year
• Contributes to advancements in all aspects of
  highways
• 8 fields of research (Administration, Planning,
  Design, Materials and Construction, Soils and
  Geology, Maintenance, Traffic, and Special
  Projects)
• 25 Subject areas (pavements, concrete materials
  bituminous materials general materials
  specifications, procedures, and practices etc.)

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NCHRP Goal-Oriented Research

• Responds to state DOT needs DOTs and AASHTO
  committees propose research topics SCOR selects
  projects.
• Ensures applicability of the results state DOTs
  and other sectors of the highway industry
  participate in monitoring the research.
• Results are published by NCHRP (reports, digests,
  synthesis, CD-ROMs, and Web documents) or
• by AASHTO (guides/manuals, specifications, and
  test methods), and often adopted by state DOTs
  and other organizations.

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NCHRP FY 2007 - Summary

• Programmed for FY 2007
• 20 Continuation projects (9.270 million)
• 33 New projects (11.180 million)
• 4 Contingent projects (1.950 million)
• Total 57 projects (22.400 million) in 18 problem
  areas (safety, planning, environment,
  hydrology/hydraulics, administration/policy,
  operations, security, bridges, maintenance,
  materials, pavements, etc.)
• 4 new projects related to pavements/pavement
  materials

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NCHRP FY 2007 Program

• Submitted Programm
  ed
• Continuations 21 (9.945) 20 (9.270)
• New Projects 167 (64.827) 33 (11.180)
• TOTAL 188 (74.772) 53 (20.450)
• Contingent 4 (1.950)
• FY 2006 163 (57.964) 60 (27.716)

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NCHRP FY 2007 New Projects

• Submitted
  Programmed/Contingent
• Member Dept. 96 (37.247) 8 (2.450/2
  (0.750)
• AASHTO Com. 68 (19.715) 24 (8.630)/2
  (1.200)
• FHWA 3 (0.500) 1 (0.100)/0 (0.000)
• TOTAL 167 (64.827)
  33(11.180)/4(1.950)
• TOTAL 2006 163 (57.716) 38
  (17.340)/13(4.900)

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NCHRP FY 2007 Selected Projects - 1

• Project 9-43 Mix Design Practices for Warm Mix
  Asphalt
• Develop a mix design method for warm mix asphalt
  (WMA) in the form of a draft AASHTO-recommended
  practice.

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NCHRP FY 2007 Selected Projects - 2

• Project 9-44 Developing a Plan for Validating
  Endurance Limit for HMA Pavements
• Validate the existence of an endurance limit for
  HMA mixes in pavements through an analysis of
  laboratory and field data, and identify and
  recommend methodologies for incorporating an
  endurance limit in HMA mechanistic-empirical
  pavement design.

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NCHRP FY 2007 Selected Projects - 3

• Project 9-45 Test Methods and Specifications
  Criteria for Mineral Filler Used in HMA
• Identify or develop test methods for mineral
  filler that characterize its mechanical and
  chemical effects on the performance of mastics
  (combinations of asphalt binder and mineral
  filler) and hot mix asphalt (HMA) and recommend
  specification criteria for mineral filler that
  optimize HMA performance.

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NCHRP FY 2007 Selected Projects - 4

• Project 18-13 Specifications and Protocols for
  Acceptance Tests of Fly Ash Used in Highway
  Concrete
• Recommend potential improvements to
  specifications and test protocols to determine
  the acceptability of fly ash for use in highway
  concrete.

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NCHRP FY 2008 Program

• Late June 2006 Solicitation of FY 2008 problem
  statements
• Sept. 15, 2006 End date for problem statements
• Nov. 10, 2006 Respond to submitters
• December 1, 2006 End date for submitter comment
• Mid-December 2006 Mail candidates to SCOR/RAC
• Mid-Feb 2007 SCOR/RAC ballots due
• Late Feb 2007 Ballot summary report to SCOR
• March 20-22, 2007 SCOR meeting/project selection

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More Information

• Cooperative Research Programs" (CRP) WWW Homepage
• http//www.trb.org .. NCHRP
• Contact Amir N. Hanna
• ahanna_at_nas.edu
• 202/334-1892