Effect of mixing moisture, oxidative aging, and tire pressures on the performance of asphalt mixes

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6129431

Kim, O K

The research undertaken consisted of the study of three topics affecting the performance of asphalt-concrete mixtures, that is, mixing moisture, oxidative aging, and higher tire pressures and axle loads. This thesis presents the findings of the research comprising these three topics. In the first study, the effects of mixing moisture (0,1,3%) and additives (lime, Pavebond Special) on performance of asphalt mixtures were evaluated using repeated load diametral testing of laboratory samples in terms of resilient modulus, fatigue life, and permanent deformation. The evaluate the long-term durability of mixes, the modified Lottman conditioning procedure was used. In the second study, the effects of oxidative aging on asphalt mixtures used in the construction of three projects in Oregon were evaluated. The repeated load diametral test for mixtures and Fraass test for asphalt cements were used. The third study, the effect of increased axle loads and tire pressures of trucks on the performance of asphalt-concrete pavements, included a survey of existing truck operating characteristics in Oregon and an investigation of the current mix design criteria. In particular, stability of asphalt mixtures was evaluated.

• Research Organization: Oregon State Univ., Corvallis, OR (USA)
• OSTI ID: 6129431
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320203 -- Energy Conservation
Consumption
& Utilization-- Transportation-- Land & Roadway
AGING
ASPHALTS
BINARY MIXTURES
BITUMENS
BUILDING MATERIALS
CONCRETES
DISPERSIONS
MATERIALS
MIXTURES
MOISTURE
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PAVEMENTS
PERFORMANCE
PRESSURE EFFECTS
ROADS
TAR
TIRES
TRUCKS
VEHICLES