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The National Academies

NCHRP 20-44(24) [Active]

Pilot Test of Proposed Standard Practice for Recycling Agents in Asphalt Mixtures Incorporating RAP and RAS
[ NCHRP 20-44 (NCHRP Implementation Support Program) ]

  Project Data
Funds: $150,000
Staff Responsibility: Edward Harrigan
Research Agency: Texas A&M Transportation Institute
Principal Investigator: Amy Epps Martin
Effective Date: 12/19/2019
Completion Date: 4/30/2022

OBJECTIVES

 The objectives of this implementation project are to (1) apply the proposed AASHTO Standard Practice and evaluation tools produced in NCHRP Project HR 09‐58 to the recycled binder blends and mixtures associated with field evaluation projects in two climates and independently assess their effectiveness and determine if revisions are needed, (2) provide guidance on the production and construction of mixtures with high recycled binder ratios (RBRs) and high recycling agent dose, and (3) develop a guide for DOTs to evaluate the potential implementation of the proposed AASHTO Standard Practice on field projects built in their states.

STATUS

Work is underway.

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