The National Academies

NCHRP 09-57 [Completed]

Experimental Design for Field Validation of Laboratory Tests to Assess Cracking Resistance of Asphalt Mixtures

  Project Data
Funds: $250,000
Research Agency: Texas A&M Transportation Institute
Principal Investigator: Fujie Zhou
Effective Date: 9/1/2014
Completion Date: 4/30/2016

The objectives of this research were to (1) select candidate laboratory tests for load- and environment-associated cracking applicable for routine use through a literature review and workshop and (2) develop an experimental design for a series of coordinated field experiments to establish, verify, and validate (a) laboratory-to-field relationships for the candidate tests and (b) criteria for assessing the cracking potential of asphalt mixtures.

Product Availability

A summary of the project final report has been published as NCHRP Research Results Digest 399.
The complete, unedited project final report is available for download here.

A workshop to select test methods for fatigue, reflective, and low-temperature cracking was held on 11-12 February 2015 at the NAS Beckman Center.

The workshop considered the following candidate test methods:
Ø Bending Beam Fatigue (BBF)
Ø Disk-Shaped Compact Tension (DCT)
Ø Indirect Tension (IDT)
Ø Texas Overlay (OT)
Ø Repeated Direct Tension (RDT)
Ø Semicircular Bend at Low Temperature (SCB at Low Temp)
Ø Semicircular Bend At Intermediate Temperature (SCB at Int Temp)
Ø Simplified Viscoelastic Continuum Damage (S-VECD)
Ø Uniaxial Thermal Stress And Strain (UTSST)
Videos describing the conduct of the candidate tests are available at the following URLs:

The 1st and 2nd project interim reports are available on request to NCHRP.
An informative booklet describing the candidate test methods prepared for the workshop participants is available here to download.

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