Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Howard, Isaac L.

Committee Member

Vahedifard, Farshid

Committee Member

Wang, Jun

Date of Degree

12-10-2021

Document Type

Graduate Thesis - Open Access

Major

Civil Engineering

Degree Name

Master of Science (M.S.)

College

James Worth Bagley College of Engineering

Department

Department of Civil and Environmental Engineering

Abstract

This study focuses on the effects of mixing temperature, binder content, and dust content on the performance of Stone Matrix Asphalt (SMA). Mixes produced at different mixing temperatures and with or without added polymer modified binder (Pb) and/or bag house dust (BHD) were evaluated. Two different types of specimens: laboratory mixed laboratory compacted, and plant mixed laboratory compacted were evaluated by Cantabro Mass Loss (CML) testing in an unaged condition or after a laboratory conditioning protocol (CP) was applied. Additional Pb and BHD were added to plant produced mixes in the laboratory before mixing. Results showed that mixing temperature affected behavior in some cases. Specimens with lower air void (Va) levels performed better than those with higher Va levels. Additional polymer modified binder and BHD, when added together, meaningfully improved mixture results in terms of CML values.

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