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AuthorTensar International

DateSep 18 2017

Tensar Application Technology Manager Piotr Mazurowski will be presenting at an evening talk at the Institute of Engineers in Malaysia on Tuesday 19th September 2017. 

The title of the presentation is 'Mechanistic Empirical Method For The Design of Pavement using stiff geogrids' and more information can be found in the link here with regards to location and timing. 

Synopsis:

Mechanistic-Empirical methods present an elegant approach to pavement design,
incorporating sound theoretical knowledge combined with empirical testing of
pavement materials under traffic loading. The sophistication of the technique in
calculating the stresses, strains and deflection in the pavement layers presents an
attractive solution to designers looking for the additional edge in their design
services. However, at present, the M-E design methods do not incorporate the
benefits of geogrids in pavement performance improvement or granular/asphaltic
layer thickness reduction. Stiff hexagonal geogrids stabilise unbound aggregate
layers through particle confinement and interlocking with geogrid apertures,
creating a Mechanically Stabilised Layer (MSL). This results in an increase of
stiffness of unbound aggregate layers and its bearing capacity. For many years, this
mechanism has been used for soft soil improvement. Today, this mechanism is used
virtually in all soil conditions, and not only in lower pavement layers, but also
within the aggregate base. The use of MSL in pavements allows for the optimisation
of the structure, offering the possibility to reduce layers thicknesses (including
asphalt layers) and/or increasing pavement life. This presentation will cover
pavement design with M-E methods with and without the incorporation of geogrids.
Results of trafficking tests spanning over a decade of continuous research with
Heavy Vehicle Simulator equipment on pavements incorporating MSL will be
presented. M-E design method will then be compared with full-scale trafficking test
results.