Archives

Resilient Roads Roundtable announces innovators/influencers list

March 15th, 2022

The Resilient Roads Roundtable announces infrastructure innovators and influencers in the public sector and government agencies. Photograph courtesy Resilient Roads Roundtable The Resilient Roads Roundtable—a consortium of business, academia and government working together toward roads that are safer, smoother, more sustainable and better able to rebound from extreme conditions, without increasing the cost to build and […]

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Protecting groundwater with geomembranes in Swedish highway expansion

January 18th, 2022

Integrated into a highway expansion project in Ljungby, Sweden, an HDPE geomembrane protects groundwater feeding the drinking water supply of 70,000 Swedes. Photograph courtesy of Solmax The E4 highway in Sweden meanders 346 miles (557 km) between Helsingborg and Stockholm. It is one of the country’s most important traffic and transport routes. Trafikverket (Swedish Transport […]

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How pavements become more resilient with interlayers

January 4th, 2022

By Andrew Dietz, Creative Influence LLC  Fragmentation and time breakup of yellow center line on old asphalt road (shallow depth of field). Photograph courtesy of Tensar Americas At first blush, the Biden Administration’s infrastructure bill appears to be very good news for road contractors. Clocking in at more than one trillion dollars, it holds the promise […]

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Pavement base reinforcement with geocells and geotextiles at a railway distribution facility

December 29th, 2021

Installation of geotextile and GEOWEB panels. Photograph courtesy of Presto Geosystems In 2018, BNSF Orillia Railway began making extensive upgrades to its automotive distribution facility in Renton, Wash. The upgrades were required to support the increased demand for new automobiles. As new-car sales soared, so did the demand for rail capacity for vehicle shipments arriving […]

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Proposed ASTM geosynthetics standard will aid in road and pavement design

November 11th, 2021

Photograph courtesy of Tensar Corp. ASTM International’s geosynthetics committee (D35) is developing a proposed standard that will provide engineers with specific information for components necessary for road and pavement design. The proposed standard (WK70888) outlines a commonly used test to characterize the performance of geosynthetics for roadway applications. Specifically, it describes the use of the […]

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Gary Johnson named president of Crafco

October 28th, 2021

Crafco president, Gary Johnson. Photograph courtesy Crafco, Inc. Crafco, Inc., announced Gary Johnson has been promoted to president of the company. Johnson joined Crafco as Vice President—Sealant Operations in 2019. He was responsible for the company’s sealant manufacturing operations nationwide: overseeing materials management, safety and regulatory compliance; product engineering and development; and facility and personnel […]

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Long-lasting road rehabilitation with Polyfelt in England

August 6th, 2021

Photograph courtesy of TenCate Geosynthetics Europe The A617 Millennium Way, a road in Nottinghamshire County (England), which was opened in the year 2000, featured cracks and surface damage after 15 years of use and therefore had to be renovated. Asphalt Grid Systems Ltd. proposed TenCate Polyfelt PGM-G100/100 as a cost-efficient and technically excellent solution.  Missing adhesion between layers before treatment Core samples had shown that the structural integrity of the bituminous layers was good. However, […]

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“Product Selector” for road reconstruction with TenCate Polyfelt

May 13th, 2021

The digital specification assistant for asphalt pavement interlayers from TenCate Geosynthetics enables product selection for asphalt pavement interlayers. Based on four simple criteria, the best technical solution can be proposed for maintenance work. The selection of the optimal product is an essential key for the success of effective conservation measures using asphalt pavement interlayers. With its digital specification assistant, TenCate Geosynthetics has made this selection possible via a professional tool available on the TenCate website www.tencategeo.eu. The online tool asks the user four simple questions and draws on the answers to define the optimum product system for sustainable […]

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Concrete interlayers

April 1st, 2021

Q: We are interested in using a geotextile as an “unbonded concrete interlayer” over existing concrete pavement to float the new slab over deteriorated pavement, instead of a thin asphalt layer. Do you have any guidance for us in this regard? A: Over the past several years, 16-ounce-per-square-yard (542-g/m2) nonwoven needlepunched geotextiles have been used […]

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Enhanced moisture management of pavement systems through capillary suction

June 1st, 2020

By René B. Laprade and John M. Lostumbo Moisture within pavement layers is a principal cause of pavement deterioration (Cedergren 1994, Christopher and McGuffey 1997, Henry and Holtz 2001). Specific problems associated with moisture include (1) reduction in pavement strength caused by excess water in the base course layers and/or the subgrade soils, (2) shrinking […]

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