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ASTM International honors Solmax director with top annual award
August 3rd, 2023
ASTM International has presented its top annual award, the Award of Merit, to Melissa Holbrook for her contributions to ASTM’s geosynthetics committee (D35). Melissa Holbrook accepts the Award of Merit from Gary T. Torosian, chairman of ASTM International's Committee D35 on Geosynthetics. The prestigious award, which includes the accompanying title of fellow, is ASTM’s highest […]
Advanced Textiles Association joins with more than 500 organizations to help build tomorrow’s workforce
August 3rd, 2023
Advanced Textiles Association has joined with more than 500 trade associations, professional societies, businesses and employers to form the Tomorrow’s Workforce Coalition, established to build support for the Freedom to Invest in Tomorrow’s Workforce Act (S. 722 / H.R. 1477). The American Society of Association Executives (ASAE) and the Professional Certification Coalition (PCC) lead the […]
Ballast stabilization using geocells
August 2nd, 2023
A significant number of research studies have been carried out to investigate the benefits of using geocells in railway track bed applications. Combined with an ever-expanding list of successful projects from around the world, the benefits of using geocells in rail ballast stabilization is well-documented. Rail operators understand that durable track geometry starts with a solid foundation, […]
Mercurial matter: Puzzling out PFAS removal in landfills
August 1st, 2023
A contaminant whose importance appears to have grown significantly in recent years, poly- and perfluoroalkyl substances (PFAS) present a challenge to pollution management given their apparent toxicity – although a clear picture is still emerging – and persistence. The tag “forever chemicals” is clearly very appropriate for a class of synthetic compounds whose unusual molecular […]
Cross USA Lecture Tour
August 1st, 2023
If you haven’t had a chance to catch the Geo-Institute (G-I) of the American Society of Civil Engineers 2022–2023 Cross-USA Lecture Tour, you still have a few opportunities to do so. This ongoing program for local G-I chapters and graduate student organizations is available to enhance the prestige of the geoprofession. It allows the G-I […]
Four Pillars Of Geosynthetic Sustainability
August 1st, 2023
Q: How is geosynthetic sustainability as compared with conventional construction materials like soil, concrete and steel? A: The four pillars of sustainability are human, social, economic and environmental. Geosynthetics are winners when compared to conventional alternatives in all four areas. To substantiate this assertion I would strongly recommend that you have a look at the […]
Bridging or trampolining during liner installation
August 1st, 2023
Q: Why is it required that there be no bridging or trampolining during liner installation at any temperature? A: Bridging or trampolining is common at breaks in grade at most installation, particularly in cool mornings at a jobsite. If backfilled in this state, the geomembrane would be stressed and could yield or, worse yet, rupture […]
Equipment on deployed geosynthetics
August 1st, 2023
Q: I’m hoping you can resolve a disagreement among coworkers regarding construction quality assurance (CQA). I’m asking what is published and/or your opinion. It involves traffic on geomembrane. Is it now industry standard to allow skid steers and/or ATVs to operate directly on a geomembrane? It is assumed no turning, spinning, etc. Technical specifications typically […]
Seeding procedures for erosion control blankets and turf reinforcement mats
August 1st, 2023
Q: Do I seed below or above erosion control blankets (ECBs) or turf reinforcement mats (TRMs)? A: Ouch! This is a trick question. There are different seeding procedures for ECBs and TRMs. For ECBs, it is always better to seed first, then install the ECB. This puts the seed directly on the soil (where the […]
The challenge of geomembrane wild edge thickness
August 1st, 2023
Q: Over the past several years, we have seen a reduction in thickness of the weld edge (smooth edge) of textured geomembranes. This is presenting a challenge for installers when trying to achieve passing trial seams in the field prior to production welding. Destructive seam tests are passing, but just barely (10% above GM19a or […]