A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Controlled field experiments were installed in north central and extreme south Texas to evaluate the comparative performance of six different additives in hot mixed asphalt concrete pavements. In north Texas, additives were incorporated in a 3-inch surface course which was applied to rehabilitate a continuously reinforced concrete pavement. In south Texas, additives were used in a 3-inch surface course on a newly constructed pavement. Additives evaluated included styrene butadiene rubber (latex), styrene butadiene styrene block copolymer, ethylene vinyl acetate, finely dispersed polyethylene, and pelletized carbon black. The additives were blended with AC-10; whereas, the control mixtures contained AC-20. Tests included rheological properties of binders before and after artificial aging, characterization of aggregate, Hveem and Marshall stability, stiffness as a function of temperature, tensile properties before and after moisture treatment and artificial aging and air void content. After one year in service all test pavements are performing equally well. The additives had little effect on Hveem and Marshall stability, moisture sensitivity, and oxidative aging of paving mixtures.
Controlled field experiments were installed in north central and extreme south Texas to evaluate the comparative performance of six different additives in hot mixed asphalt concrete pavements. In north Texas, additives were incorporated in a 3-inch surface course which was applied to rehabilitate a continuously reinforced concrete pavement. In south Texas, additives were used in a 3-inch surface course on a newly constructed pavement. Additives evaluated included styrene butadiene rubber (latex), styrene butadiene styrene block copolymer, ethylene vinyl acetate, finely dispersed polyethylene, and pelletized carbon black. The additives were blended with AC-10; whereas, the control mixtures contained AC-20. Tests included rheological properties of binders before and after artificial aging, characterization of aggregate, Hveem and Marshall stability, stiffness as a function of temperature, tensile properties before and after moisture treatment and artificial aging and air void content. After one year in service all test pavements are performing equally well. The additives had little effect on Hveem and Marshall stability, moisture sensitivity, and oxidative aging of paving mixtures.
Asphalt Additives in Highway Construction
J. W. Button (author)
1988
97 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Adhesives & Sealants , Bituminous concretes , Additives , Flexible pavements , Bituminous coatings , Mechanical properties , Binders(Materials) , Service life , Performance evaluation , Aging tests(Materials) , Charts(Graphs) , Texas , Roads , Field tests
Asphalt in highway construction
| Engineering Index Backfile | 1938
Asphalt in highway construction
| Engineering Index Backfile | 1938