00983221

Component

https://doi.org/10.3141/1874-05

http://scholar.google.com...amed&publication_year=2004

The current inclination toward establishing a mechanistic pavement analysis scheme to support rehabilitation design will require adopting mechanical materials properties. Mechanistic properties are needed for establishing the material-mechanics link, which represents the most effective approach for accurately predicting the response of road structures and their performance. Physical characteristics served early design practices with a common understanding among users that a more robust approach is needed to address rehabilitation design requirements effectively. Current attempts to improve material characterization based on the outcome of mechanical tests focusing on unbound materials are discussed. It is concluded that simplifying assumptions built in the proposed testing schemes and the manner in which these properties are determined overlooked other critical behavior indicators. Results of field and laboratory investigations highlight the need for capturing permanent deformation, and a more effective characterization technique for unbound material is described. Following this new approach, conventional resilient modulus and permanent deformation determinations were examined for a variety of native soils and processed material (crushed stones). Implementation of the new characterization technique in analytical models is also discussed.

This paper appears in Transportation Research Record No. 1874, Geology and Properties of Earth Materials 2004.

00983216

English

p. 38-46

2004

Transportation Research Record

0309094690

Figures (12) ; References (12)

Aggregates; Crushed rock; Laboratory tests; Mathematical models; Mechanical tests; Modulus of resilience; Rutting; Soils; Test procedures

Unbound materials

Geotechnology; Highways; I36: Aggregates

TRIS, TRB, ATRI

Dec 6 2004 12:00AM

• CORRELATION BETWEEN RESILIENT MODULUS, MOISTURE VARIATION, AND SOIL SUCTION FOR SUBGRADE SOILS
• EQUIVALENCY OF CRUSHED ROCK AND THREE INDUSTRIAL BY-PRODUCTS USED FOR WORKING PLATFORMS DURING PAVEMENT CONSTRUCTION
• EVALUATION OF NEW TEST PROCEDURES FOR DETERMINING BULK SPECIFIC GRAVITY OF FINE AGGREGATE BY AUTOMATED METHODS
• FRAMEWORK FOR ANALYZING EFFECTS OF SPRING LOAD RESTRICTIONS
• GEOTECHNICAL PROPERTIES OF STABILIZED DREDGED MATERIAL FROM NEW YORK-NEW JERSEY HARBOR
• HARD AGGREGATE RESISTANCE TO STUDDED TIRES: ALASKAN EXPERIENCE
• HARMONIZED RESILIENT MODULUS TEST METHOD FOR UNBOUND PAVEMENT MATERIALS
• LIFTING ALL SEASONAL LOAD RESTRICTIONS IN NORWAY IN 1995: BACKGROUND AND EFFECTS
• MEASUREMENT OF IN SITU HYDRAULIC CONDUCTIVITY AND COEFFICIENT OF CONSOLIDATION WITH PREFABRICATED VERTICAL DRAINS
• MODULUS ANISOTROPY AND SHEAR STABILITY OF GEOFIBER-STABILIZED SANDS
• PERFORMANCE OF PROTOTYPE EMBANKMENT BUILT WITH TIRE SHREDS AND NONGRANULAR SOIL
• PREDICTING ELASTIC RESPONSE CHARACTERISTICS OF UNBOUND MATERIALS AND SOILS
• RESILIENT MODULUS MODELS FOR COMPACTED COHESIVE SOILS
• SEASONAL VARIATIONS OF A SUBGRADE SOIL RESILIENT MODULUS IN SOUTHERN BRAZIL
• SLOPE REHABILITATION AT THE BALTIMORE-WASHINGTON PARKWAY WITH RAMMED AGGREGATE PIERS
• SOIL MOISTURE DEFICIT ANALYSIS
• USE OF RECYCLED AND WASTE MATERIALS IN INDIANA
• USING A SINGLE TEST TO DETERMINE SPECIFIC GRAVITY AND ABSORPTION OF AGGREGATE BLENDS
• USING TIME-DOMAIN REFLECTOMETRY FOR REAL-TIME MONITORING OF SUBSIDENCE OVER AN INACTIVE MINE IN VIRGINIA