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Strength Reduction Of Geogrids Used In Reinforced Walls
February 1st, 2023
Q:At the moment there are two issues that create uncertainty with the use of PET fabrics and geogrids in the Netherlands. First, for many years we built pile-supported geosynthetic reinforced embankments (so-called piled mattresses to reduce settlements under embankments on soft soils). The fill is supported by a geosynthetic mat, which rests on top of […]
GSI Webinar – Geosynthetics Used In Paved And Unpaved Roads – December 7
November 24th, 2022
The Geosynthetic Institute (GSI) will sponsor a webinar, “Geosynthetics Used In Paved And Unpaved Roads” on December 7 from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. Beginning in the 1930s, geotextiles and then geogrids have been used in unpaved and paved roads […]
Geosynthetics in green roofs
August 1st, 2022
To talk about geosynthetics on green rooftops is to talk about an opportunity to change and make an environmental improvement in the world. The growing need to create awareness of an ecological responsibility and the environment has allowed this concept to spread more successfully. FIGURE 1 8,611 square foot (800 m2) extensive green roof central […]
TechFab India’s advanced facility for interface testing of geosynthetics fully operational
June 24th, 2022
TechFab India’s state-of-the-art geosynthetic-soil interaction testing facility is now fully operational at its in-house laboratory located in Rakholi, Silvassa, Union Territory of Dadra & Nagar Haveli. This facility has a large pullout apparatus for conducting laboratory pull-out tests on geosynthetics in accordance with ASTM D6706 and a large direct shear apparatus for evaluating the interface […]
‘Living breakwaters’ protect Staten Island’s shoreline
June 1st, 2022
The Triton marine mattresses’ limestone filling provides the substrate for growing oysters, helping repopulate the oyster reef systems surrounding Staten Island, N.Y. Photograph courtesy of Tensar International Corp. Coastal erosion in the United States costs roughly $500 million in property damage annually. Proposed solutions focused on building higher, thicker, wider protective structures—such as seawalls—are expensive […]
Commercial Metals completes acquisition of Tensar Corporation
April 28th, 2022
Photograph courtesy Tensar International Corp. Commercial Metals Company announced that it has successfully completed the acquisition of TAC Acquisition Corp. ("Tensar") from Castle Harlan, a New York-based private equity firm, for a cash purchase price of $550 million, subject to customary purchase price adjustments. Tensar is a global provider of innovative ground stabilization and soil reinforcement solutions, […]
Choosing soil stabilization geosynthetics
April 12th, 2022
For a Seattle road over marshland, the contractor chose a Tensar International Corp. geogrid for soil stabilization. By Alec Anderson, P.E., Regional Sales Manager, Tensar International Corp. Installing a geotextile. Photograph courtesy of Tensar International Corp. When soft soils are encountered on a jobsite, many contractors automatically turn to the same solutions they've always used. However, […]
ACE Geosynthetics wins IAAs in the geosynthetics category
April 1st, 2022
ACE Geosynthetics Inc. incorporated geogrids and geotextiles into mechanically stabilized earth (MSE) walls for a highway interchange project in the Middle East. Photograph courtesy of ACE Geosynthetics Inc. The northern part of a highway interchange project in the Middle East is adjacent to a developing industrial park; a densely populated city is located to the […]
LCC curing effect on geogrids
April 1st, 2022
Q: Can you tell me whether modest warming of geogrids (e.g., due to heat generated by the curing of lightweight cellular concrete [LCC]) might impact the long-term strength or long-term modulus of geogrids? A: You need to know the maximum temperature due to the heat from hydration of the LCC. Most pozzolanic reaction temperatures (like […]
High pH effects geogrids?
April 1st, 2022
Q: Can you tell me whether the high pH of curing portland cement (typically ~12.4) might have any impact on the long-term performance of geogrids? A: It depends on the geogrid and its formulation. There are three categories of geogrid: (1) punched and drawn (polyethylene [PE] uniaxial, polypropylene [PP] biaxial and triaxial), (2) strap (polyvinyl […]