00755140

Component

https://doi.org/10.3141/1611-09

http://scholar.google.com...uler&publication_year=1998

A model road was constructed in a laboratory. The road consisted of asphalt over a crushed rock base and a silty sand and gravel subbase. The silty sand and gravel were placed in a very loose state to simulate a thaw-weakened, poor-quality subbase. The water table was kept at 152 mm (6 in.) below the bottom of the asphalt. The model road was divided into three sections. A geogrid was installed at the bottom of the base course material in two of the test sections, and the third was left as a control section. A falling weight deflectometer was used to measure the dynamic response of the pavement structure. The traffic benefit ratio is defined as the expected life (equivalent single-axle loads) of one section divided by the expected life of another section. The Alaska Department of Transportation and Public Facilities asphalt pavement design procedure and the NCHRP pavement design procedure were used to compare the test sections. The results from the two procedures were very similar. By using either procedure, the life of the pavement with respect to reinforcement was on the order of 2 to 4, depending on the type of grid and the depth of base course material.

This paper appears in Transportation Research Record No. 1611, Stabilization and Geosynthetics.

English

p. 70-77

1998

Transportation Research Record

0309064562

Figures (10) ; References (3)

Base course (Pavements); Design methods; Dynamic loads; Falling weight deflectometers; Freeze thaw durability; Geogrids; Geotextiles; Laboratory studies; Material reinforcement; Pavement design; Pavements; Service life; Subbase (Pavements)

Dynamic response; Model tests; Subbase

Design; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I33: Other Materials used in Pavement Layers

TRIS, TRB, ATRI

Oct 28 1998 12:00AM

• BENEFITS OF USING GEOGRIDS FOR BASE REINFORCEMENT WITH REGARD TO RUTTING
• FORENSIC EVALUATION OF THREE FAILED CEMENT-TREATED BASE PAVEMENTS
• GEOGRID REINFORCING OF RECYCLED AGGREGATE MATERIALS FOR ROAD CONSTRUCTION: FINITE ELEMENT INVESTIGATION
• LABORATORY INVESTIGATION OF COAL WASTES FOR SECONDARY ROADS
• OPTIMIZING MULTIAGENT, MULTI-INJECTED SWELL MODIFIER
• RESILIENT PROPERTIES AND FATIGUE DAMAGE IN STABILIZED RECYCLED AGGREGATE BASE COURSE MATERIAL
• STABILIZATION CHARACTERISTICS OF CLAYS USING CLASS C FLY ASH
• STABILIZATION OF SULFATE-CONTAMINATED CRUSHED CONCRETE BASE WITH TYPE V CEMENT AND FLY ASH
• STABILIZATION OF WEAK CLAY WITH STRONG SAND AND GEOGRID AT SAND-CLAY INTERFACE
• TENSILE PROPERTIES OF ASPHALT OVERLAY GEOSYNTHETIC REINFORCEMENT