00600673

Component

http://onlinepubs.trb.org...trr/1990/1259/1259-013.pdf

https://scholar.google.co...tton&publication_year=1990

Pavement cores were collected from rutting asphalt concrete pavements less than 2 years old. Laboratory tests revealed common causes of rutting, such as excessive asphalt content, excessive fine-grained aggregate, and high percentages of natural, rounded aggregate particles. A test program was designed and initiated to quantify the contribution to plastic deformation in laboratory-prepared asphalt concrete mixtures when increasing amounts of natural (uncrushed) aggregate particles are added to replace crushed particles. The objective is to generate supporting data and prepare specifications for maximum quantity of certain natural sands, minimum top-size aggregate, and minimum voids in mineral aggregate in paving mixtures to be placed on high traffic volume roadways. Tests on asphalt mixtures included unconfined compression, static and dynamic creep, and indirect tension; the particle index test was used on the aggregate. Results to date have indicated that susceptibility to plastic deformation increases dramatically when natural fine aggregate particles replace crushed particles in a given aggregate gradation. A new theoretical approach that includes the aggregate's influence on rutting is being considered. In this analysis the aggregate's characteristics are studied by using a factor in the creep-recovery performance of the mixture.

This paper appears in Transportation Research Record No. 1259, Chip Seals, Friction Courses, and Asphalt Pavement Rutting 1990.Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01410821

p. 141-152

1990

Transportation Research Record

0309050162

Figures (10) ; References (21) ; Tables (5)

Aggregate gradation; Asphalt concrete; Creep tests; Fine aggregates; Laboratory tests; Mechanical relaxation; Natural aggregates; Plastic deformation; Ruts (Pavements); Sand; Tension; Void ratios

Rut; Susceptibility

Geotechnology; Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials; I36: Aggregates

TRIS, TRB, ATRI

Oct 31 1990 12:00AM

• CHARACTERIZATION OF RUTTING POTENTIAL OF LARGE-STONE ASPHALT MIXES IN KENTUCKY
• CHIP SEALS FOR HIGH TRAFFIC PAVEMENTS
• CORRELATION BETWEEN FIELD AND LABORATORY PERFORMANCE OF LIQUID ASPHALT-BASED SEAL COATS
• DESIGN OF LARGE-STONE ASPHALT MIXES TO MINIMIZE RUTTING
• EFFECTS OF CRUSHED PARTICLES IN ASPHALT MIXTURES
• EFFECTS OF MAXIMUM AGGREGATE SIZE ON RUTTING POTENTIAL AND OTHER PROPERTIES OF ASPHALT-AGGREGATE MIXTURES
• ESTIMATING VOIDS IN A DOUBLE CHIP SEAL
• FLOW RATE AS AN INDEX OF SHAPE TEXTURE OF SANDS
• FRICTION COURSES FOR MODERATE TRAFFIC HIGHWAYS
• IMPROVING DURABILITY OF OPEN-GRADED FRICTION COURSES
• LABORATORY AND FIELD STUDY OF PAVEMENT RUTTING IN SAUDI ARABIA
• RELATIONSHIP BETWEEN PERMANENT DEFORMATION OF ASPHALT CONCRETE AND MOISTURE SENSITIVITY
• RUT-RESISTANT ASPHALT CONCRETE OVERLAYS IN WISCONSIN
• USE OF GYRATORY TESTING MACHINE TO EVALUATE SHEAR RESISTANCE OF ASPHALT PAVING MIXTURE
• WASHINGTON STATE CHIP SEAL STUDY