Wed., Jan. 22 | South Dining Room - Park Town Hotel

Full-Scale Testing of Geosynthetic-Stabilised Working Platforms and Heavy-Haul Roads

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Full-Scale Testing of Geosynthetic-Stabilised Working Platforms and Heavy-Haul Roads

Time & Location

Jan. 22, 2020, 11:45 a.m. – 1:00 p.m.
South Dining Room - Park Town Hotel, 924 Spadina Crescent E, Saskatoon, SK S7K 3H5, Canada

About The Event

Stabilisation of aggregate layers over weak subgrade soils is frequently accomplished using geogrid for unpaved roads, working platforms, or foundations. The performance of various stabilised aggregate layers over a soft silty clay subgrade soil was evaluated at full scale under highly controlled loading conditions.  In order to provide the required reaction load, a moveable loading platform was constructed onto which 4 loaded gravel trucks could be driven.   The overall system consisted essentially of a moveable steel load platform that was placed over a trench within which multiple test pads were constructed with different combinations of gravel, gravel thickness and geogrid layers.

Load was applied to a 1 square metre plate area by a hydraulic piston capable of reaching well over 1000 kN, thus representing loading at essentially field scale.  All tests were taken past ultimate bearing capacity failure to a maximum stroke of 250 mm. This presentation will highlight some of the preliminary findings, theory, and challenges of the project.

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