SEDL / STP / STP1540-EB / STP154020120021

Laboratory and Field Evaluation of Cement-Treated Reclaimed Asphalt Pavement Blends as Roadway Base Material

Nazarian, Soheil
Professor, Dept. of Civil Engineering, The Univ. of Texas at El Paso, El Paso, TX

Yuan, Deren
Research Engineer, Center for Transportation Infrastructure Systems, The Univ. of Texas at El Paso, El Paso, TX

Hoyos, Laureano
Associate Professor, Dept. of Civil Engineering, The Univ. of Texas at Arlington, Arlington, TX

Puppala, Anand
Professor, Dept. of Civil Engineering, The Univ. of Texas at Arlington, Arlington, TX

Pages: 17    Published: Apr 2012

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Abstract

Reclaimed asphalt pavement (RAP) and granular base materials were collected throughout Texas to evaluate the properties of RAP and RAP blended with virgin or salvage aggregates for roadway base course application. Mixes containing RAP of 100 %, 75 %, and 50 % and treated with Portland cement of different dosages were utilized in a comprehensive laboratory testing program. The factors that affect the properties of cement-treated RAP mixes are identified and a mix design model based on typical RAP and granular base materials in Texas was proposed. The design model was verified by the data from the initial field trial on actual construction projects. The feasibility of using a modulus-based procedure for quality assurance/quality control during construction is discussed.