00731141

Component

https://doi.org/10.3141/1547-01

http://scholar.google.com...upta&publication_year=1996

The results of analyses of laboratory resilient modulus testing conducted on dense-graded and open-graded aggregates are presented. The testing program included three different aggregate materials (crushed limestone, natural stone, and slag), five different gradation specifications, and three different moisture conditions (dry, moist, and saturated). In addition to the five aggregate specifications, test specimens were prepared so that they would satisfy the lower, central, and upper bounds for the gradations. Resilient modulus tests were conducted as closely as possible according to Strategic Highway Research Program Protocol P-46 (AASHTO T 294-92 I). The test results were analyzed using log-linear regression analysis with two-parameter (bulk stress) and three-parameter (bulk stress and octahedral shear stress) expressions for resilient modulus. The results of the testing indicate that the resilient modulus of aggregates and regression constants vary significantly depending on the type of material and vary less significantly depending on material gradation and moisture condition. The natural stone aggregates had the higher moduli and the slag aggregate had the lowest moduli. The resilient modulus does not vary significantly as the moisture content increases unless the aggregate becomes saturated. The R-squared values are consistently higher using a three-parameter expression than a two-parameter expression.

This paper appears in Transportation Research Record No. 1547, Aggregate and Material Tests and Properties Related to Performance.

English

p. 1-6

1996

Transportation Research Record

0309059151

Figures (4) ; References (12) ; Tables (10)

Aggregate gradation; Crushed limestone; Dense graded aggregates; Laboratory tests; Modulus of resilience; Moisture content; Open graded aggregates; Regression analysis; Slag; Stone

Strategic Highway Research Program

Data and Information Technology; Geotechnology; Highways; I36: Aggregates

TRIS, TRB

Feb 3 1997 12:00AM

• AGGREGATE CHARACTERISTICS GOVERNING PERFORMANCE OF SEAL COAT HIGHWAY OVERLAYS
• COARSE AGGREGATE EFFECTS ON ELASTIC MODULI OF CONCRETE
• EFFECTS OF AGING ON FRESHLY DEPOSITED OR DENSIFIED CALCAREOUS SANDS
• EVALUATION OF FROST RESISTANCE TESTS FOR CARBONATE AGGREGATES
• EVALUATION OF LABORATORY PROCEDURES FOR AGGREGATE POLISH TEST
• EVALUATION OF PAVEMENT BEARING CHARACTERISTICS USING FLORIDA LIMEROCK BEARING RATIO TEST
• INFLUENCE OF AGGREGATE PROPERTIES ON PERFORMANCE OF HEAVY-DUTY HOT-MIX ASPHALT PAVEMENTS
• INFLUENCES ON PERMANENT DEFORMATION BEHAVIOR OF UNBOUND GRANULAR MATERIALS
• LINCOLN AVENUE RECLAIMED ASPHALT PAVEMENT BASE PROJECT
• SHAKEDOWN OF SUBGRADE SOIL UNDER REPEATED LOADING
• STEADY-STATE STRENGTH, RELATIVE DENSITY, AND FINES CONTENT RELATIONSHIP FOR SANDS
• TESTING METHODOLOGY FOR RESILIENT MODULUS OF BASE MATERIALS
• USE OF SHREDDED RUBBER IN UNBOUND GRANULAR FLEXIBLE PAVEMENT LAYERS