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.
Request More Information