In-depth study of cold in-place recycled-pavement performance. Volume 1. Final report. Rept. for Dec 88-Oct 90

Technical Report · Sat Dec 01 00:00:00 EST 1990

OSTI ID:5414435

Scholz, T V; Hicks, R G; Rogge, D F

Oregon has developed a mix design procedure for cold in-place recycled (CIR) asphalt concrete pavements. The procedure involves estimation of an initial emulsion content based on gradation of recycled asphalt pavement (RAP), asphalt content of RAP, and penetration and viscosity of recovered asphalt. When an estimated emulsion content is determined, Marshall-sized specimens are prepared for a range of emulsion contents with the range centered on the estimated emulsion content. Hveem and Marshall stability, resilient modulus, and index of retained modulus (IRM) tests are performed on the specimens and a design emulsion content is selected based upon these results. Because of variations in RAP properties, continual need for field adjustments, and the difficulty of interpreting mix property test results, only the estimation part of the procedure is currently implemented. The paper describes the mix design procedure and presents lab results demonstrating the difficulty of choosing emulsion content based on Hveem and Marshall stability, resilient modulus and IRM. Data comparing design emulsion content with actual emulsion contents used in the field are presented. Selection of water content is discussed. Test results of mix properties monitored over time are presented, demonstrating the curing of the emulsion. Performance data for CIR pavements constructed from 1984 through 1988 are presented as well as initial results of an attempt to use lime during recycling to correct a stripped pavement. A construction and inspection manual is presented as a separate document.

• Research Organization: Oregon State Univ., Corvallis, OR (United States). Dept. of Civil Engineering
• OSTI ID: 5414435
• Report Number(s): PB-91-201434/XAB; TRR-90-23
• Resource Relation: Other Information: Sponsored by Federal Highway Administration, Salem, OR. Oregon Div., and Oregon State Highway Div., Salem. Materials and Research Section
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ASPHALTS
RECYCLING
PAVEMENTS
PERFORMANCE
BUILDING MATERIALS
CONCRETES
CURING
DESIGN
EMULSIONS
FIELD TESTS
MANUALS
MECHANICAL PROPERTIES
MECHANICAL TESTS
MIXTURES
MOISTURE
OREGON
QUANTITY RATIO
STABILITY
VISCOSITY
BITUMENS
COLLOIDS
DEVELOPED COUNTRIES
DISPERSIONS
DOCUMENT TYPES
FEDERAL REGION X
MATERIALS
MATERIALS TESTING
NORTH AMERICA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
TAR
TESTING
USA
320604* - Energy Conservation
Consumption
& Utilization- Municipalities & Community Systems- Municipal Waste Management- (1980-)