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A half section of a typical railroad track structure that consists of AREMA No. 4 ballast layer, two crossties, and a rail (I-beam) was constructed in the ballast box. TX190L geogrid was installed 10-inch below the top of the ballast. A total of 500 load cycles were applied for each test. A wireless device – “SmartRock” was embedded in a ballast box to monitor individual ballast particle movement under cyclic loading conditions. SmartRock is a realistic ballast particle shape wireless device used to investigate individual ballast particle movement. The results show that the ballast movement is significantly reduced with TX190L geogrid. 


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For more than 30 years, Tensar’s innovative ground stabilization solutions have proven ideal for many kinds of construction and subgrade improvement projects, including paved and unpaved roads, car parks, airfields, heavy duty pavements and working platforms.

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