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Airports zone in on geosynthetics
October 1st, 2023
FIGURE 1 Tensar mechanically stabilized the recycled congregate aggregate sublease at Toronto Pearson Airport so that subexcavation and removal of the subgrade soil was not required. Photo courtesy of Tensar Airport runways are not mere roads. They need to be built smoother and stronger to support the loads of jet planes without buckling under the […]
Reinforced soil wall with geogrids
August 1st, 2022
FIGURE 1 Geographic location of the study area. Photo: Google Maps Mechanically stabilized earth walls (MSE) are containment structures that have gained considerable popularity over the last few years due to their various benefits: constructive, environmental and economic. There are several types of reinforced earth walls, which vary according to the type of material used […]
Geotextile grab test methods
June 1st, 2022
Q: I know the American Society for Testing and Materials (ASTM) approves several grips (the requirement is they be “flat”) to perform ASTM D4632 and ASTM D5034. We use a hard, smooth rubber surface for the woven geotextile and a slightly serrated surface for the nonwoven geotextile. One of our customers is using a smooth […]
Deploying a geosynthetic mattress ballast layer at an ore-processing site
August 1st, 2018
New applications of geosynthetics are being found that form from overlaps of existing functions, such as protection, separation, filtration and drainage. One new geosynthetic product, the geosynthetic mattress ballast layer (GBL), was first implemented for an ore-processing waste facility protection application in 2015. The GBL is a geotextile containment system that provides a tubular component […]