Evaluation of the effects of crumb rubber and SBR on rutting resistance of asphalt concrete

Journal Article · Tue Dec 31 04:00:00 EST 1996 · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry

OSTI ID:430340

Shih, Chuang-Tsair; Tia, Mang; Ruth, B E ^[1]

---

1. Univ. of Florida, Gainesville, FL (United States)

This paper presents the results of a study to evaluate the effects of addition of crumb rubber (CR) and styrene-butadiene rubber (SBR) on the rutting resistance of asphalt concrete. These two additives were blended with an AC-20 and an AC-30 grade asphalt cements at different levels of concentrations. These modified and unmodified asphalt blends were tested at intermediate and high temperatures to evaluate their rutting resistance characteristics. They were also used to make Florida type S-I structural surface mixtures. These mixtures were made into Marshall-size specimens by using Gyratory Testing Machine (GTM) equipped with air-roller to compact and density to three compaction levels which simulate three different conditions in the pavement. The FDOT`s (Florida Department of Transportation) Loaded Wheel Tester was also used to evaluate the rutting resistance of these asphalt mixtures. The test results indicate that the modified asphalt mixtures show relatively better rutting resistance and shear resistance as compared with the unmodified asphalt mixtures.

• OSTI ID: 430340
• Report Number(s): CONF-960807--
• Journal Information: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry, Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry Journal Issue: 4 Vol. 41; ISSN ACFPAI; ISSN 0569-3772
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADDITIVES
ASPHALTS
BUTADIENE
CRACKS
MECHANICAL PROPERTIES
MUNICIPAL WASTES
NATURAL RUBBER
RHEOLOGY
SCRAP
SHEAR
TIRES
WASTE PRODUCT UTILIZATION