Applicability of the DMSO (dimethyl sulfoxide) aggregate degradation test to determine moisture-induced distress in asphalt-concrete mixes. Final report, June 1986-June 1987

Technical Report · Mon Jun 01 00:00:00 EDT 1987

OSTI ID:5650047

Heinicke, J J; Vinson, T S; Wilson, J E

A laboratory investigation was conducted to evaluate the effectiveness of the dimethyl sulfoxide accelerated weathering test (DMSO test) to predict moisture-induced distress in asphalt-concrete mixtures. Asphalt-concrete specimens were fabricated using aggregates from three quarries. The specimens were conditioned using vacuum saturation and a series of five freeze/thaw cycles. The resilient modulus (M{sub r}) was obtained before and after each conditioning cycle and the Index of Retained Resilient Modulus (IRM{sub r}) was determined. The results indicate the DMSO test may be used to identify the potential for moisture-induced distress in asphalt-concrete mixtures. However, no correlation was determined between the DMSO test results and the IRM{sub r} or fatigue life test results. The strain and temperature dependencies of the M{sub r} were determined for a dense-graded asphalt-concrete mixture. It was concluded that constant stress testing may result in a misinterpretation of the IRM{sub r} and tests conducted within the currently accepted temperature range may result in a plus or minus 20% deviation in the IRM{sub r}. In an accompanying analytical program, the effect of diametral test boundary conditions on the measured value of M{sub r} was evaluated using two- and three-dimensional finite element models. The results indicate that the resilient modulus diametral test is adequately represented by elastic theory and an assumed plane stress condition.

• Research Organization: Oregon State Univ., Corvallis, OR (USA). Transportation Research Inst.
• OSTI ID: 5650047
• Report Number(s): PB-89-208235/XAB; TRR-87-26
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
02 PETROLEUM
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ASPHALTS
CONCRETES
PAVEMENTS
WEATHERING
FATIGUE
MIXTURES
MOISTURE
PROGRESS REPORT
STRAINS
SULFOXIDES
BITUMENS
BUILDING MATERIALS
DISPERSIONS
DOCUMENT TYPES
MATERIALS
MECHANICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OTHER ORGANIC COMPOUNDS
TAR
360603* - Materials- Properties
020500 - Petroleum- Products & By-Products
320203 - Energy Conservation
Consumption
& Utilization- Transportation- Land & Roadway