01023263

Component

https://doi.org/10.3141/1975-17

http://scholar.google.com...anyu&publication_year=2006

Large-scale experiments were conducted on working platforms of crushed rock (breaker run stone or Grade 2 gravel) overlying a simulated soft subgrade to mimic conditions during highway construction where a working platform is used to limit total deflections because of construction traffic. Tests were conducted with and without geosynthetic reinforcement to evaluate how deflection of the working platform is affected by the presence of reinforcement, type of reinforcement, and thickness of the working platform. Four different geosynthetics were used: geogrid, woven geotextile, nonwoven geotextile, and drainage composite. Reinforced working platforms deformed at a slower rate, and, in most cases, deformation of geosynthetic-reinforced working platforms nearly ceased after approximately 200 loading cycles. Total deflections at 1,000 cycles were smaller by a factor of approximately two for reinforced working platforms relative to unreinforced working platforms, and smaller deflections were associated when less extensible geosynthetics were used for reinforcement. The thickness of a geosynthetic-reinforced working platform needed to meet a target deflection diminished approximately linearly with increasing logarithm of the interaction modulus, a measure of in situ extensibility measured in a pullout box. The reduction in working platform thickness attained with reinforcement was also larger when the target total deflection was smaller.

01039137

English

pp 137-145

2006

Transportation Research Record: Journal of the Transportation Research Board

0309099846

Print

Figures (7) ; References (21) ; Tables (3)

Crushed rock; Deflection tests; Geogrids; Geosynthetics; Geotextiles; Granular bases; Material reinforcement; Subgrade (Pavements); Thickness

Working platforms (Road construction)

Geotechnology; Highways; Materials; I33: Other Materials used in Pavement Layers; I42: Soil Mechanics

PRP, TRIS, TRB, ATRI

Mar 3 2006 10:56AM

• Accelerated Stiffness Profiling of Aggregate Bases and Subgrades for Quality Assessment of Field Compaction
• Base Reinforcement with Biaxial Geogrid: Long-Term Performance
• COM624P-Based Drilled Shaft Torque and Lateral Load Analysis Method
• Comparison of Field and Laboratory Pullout Tests on Geosynthetics in Marginal Soils
• Construction-Induced Stresses in H-Piles Supporting an Integral Abutment Bridge
• Deformation–Resistance Model for Geogrid-Reinforced Unpaved Road
• Design and Monitoring of an Embankment on Controlled Modulus Columns
• Durability of Galvanized Soil Reinforcement: More Than 30 Years of Experience with Mechanically Stabilized Earth
• Evaluation of Full-Sized Cast-in-Place Pile Capacity with Artificial Defects
• Horizontal Bearing Capacity of Suction Piles in Sand
• Influence of Soil Strength on Optimal Embedment Depth of Geosynthetic Reinforcement Layer in Granular-Reinforced Foundations
• Intelligent Soil Compaction Technology: Results and a Roadmap Toward Widespread Use
• Numerical Simulation of Dynamic Behavior of Geofoam Embankment
• Reuse of Fly-Ash Amended Petroleum-Contaminated Soils in Highway Embankments
• Sustainable Earthworks Specifications for Transport Infrastructure
• Visual Rating and Strength Testing of 40-Year-Old Precast Prestressed Concrete Bridge Piling