Geotextile

Engineering

Deflexion

Geotechnical engineering

Geology

Deflection (physics)

Physics

Finite element method

Geosynthetics

Optics

Subgrade

Structural engineering

Forensic engineering

Geogrid

Reinforcement

Transportation Research Record Journal of the Transportation Research Board

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...

Deflection of Prototype Geosynthetic-Reinforced Working Platforms over Soft Subgrade