Tough Cell Beam Effect
Vertical loading on the Tough Cell (PRS-Neoweb) cellular confinement system with compacted granular material creates a semi-rigid slab, or beam effect, over soft soils and muskeg. This beam effect distributes the load evenly and effectively over a wider are, decreasing differential settlement of soft subgrades, which improves shear strength and enhances load-bearing capacity.
As shown in the diagram, the beam exhibits elastic behavior for the entire Tough Cell reinforced layer, thereby reducing stresses to the subgrade. The zone of confinement created by Tough Cell is about 5 cm higher than the cell wall height and applicable to any structural layer. The beam effect was verified by extensive testing at the University of Kansas and the Indian Institute of Technology, Madras.