The Minnesota Department of Transportation has released a technical summary that evaluates the effectiveness of two fracture mechanics tests in evaluating the performance of Cold In-Place Recycling mixtures. Read the Technical Summary
The Minnesota Department of Transportation has released a report that compares the performance of cold in-place recycling of different stabilization materials for pavement by using a newly-developed testing method called Fracture Index Value for Energy. Read the Report
The Civil and Environmental Engineering Department at Mississippi State University has released a report that characterizes cold in-place properties for the design, construction, and performance of high-traffic applications. Read the Report
Pavement Preservation Journal, Spring 2015, Vol. 8, No. 1 By Tom Kuennen A technical conference last year gave needed focus to hot in-place recycling (HIR) and cold in-place recycling (CIR), and its implementation from coast to coast. The 2014 International and Western States In-Place Recycling Conference was held Aug. 5-7 in Denver, and drew delegates from the Eastern seaboard…
Napa Valley Register, 14 October 2011 The city of Napa hopes to pave the way for Northern California when it comes to green paving techniques. On Thursday, the city held an on-site workshop for public works directors, council members and other decision makers from cities and towns throughout the Bay Area to show them an innovative way to lay…
TRB’s National Cooperative Highway Research Program (NCHRP) has issued a request for proposals to develop time-critical tests for asphalt-treated cold in-place recycling (CIR), cold central-plant recycling (CCPR), and full-depth reclamation (FDR) materials. The project includes the development of a guide specification for process control and product acceptance of cold recycling operations. Proposals are due December 6, 2016. Read the…
Pavement Preservation Journal Summer 2016, Vol. 9, No. 2 By Dr. Buzz Powell, P.E. Planning and procurement are underway for the placement of northern pavement preservation sections in central Minnesota in July 2016. MnROAD worked with state DOTs with a northern research focus to develop a consensus to utilize 2.1 miles of Mille Lacs County Road 8 as the…
Pavement Preservation Journal, Summer 2015, Vol. 8, No. 2 By Steve Cross, P.E., Ph.D. A complete rewrite and update of the Basic Asphalt Recycling Manual has been released by the Asphalt Recycling & Reclaiming Association. The first edition of the Basic Asphalt Recycling Manual, pronounced “BARM” as it is better known, was published in 2001 by ARRA. It served…
Pavement Preservation Journal, Winter 2013, Vol. 6, No. 4 Tom Kuennen Nearly 100 stakeholders in the pavement preservation community enjoyed the Midwestern States Regional In- Place Recycling Conference held in suburban Chicago Sept. 10-12. Sponsored by FP2 Inc. founding association the Asphalt Recycling & Reclaiming Association and the Federal Highway Administration, and administered by the National Center for Pavement…
AASHTO Journal, 3 February 2012 The Virginia Department of Transportation announced Wednesday it has received national recognition for using pavement recycling methods to rebuild aging roadways, saving significant time and money.VDOT and its prime contractor, Lanford Brothers Co. of Roanoke, rebuilt a section of Interstate 81 in Augusta County by recycling existing road material back into the new pavement…
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 421: Recycling and Reclamation of Asphalt Pavements Using In-Place Methods discusses the use of hot in-place recycling, cold in-place recycling, and full-depth reclamation of asphalt pavements. In-place recycling and reclamation of asphalt pavements provides agencies with the ability to optimize the value of in-place materials, minimize construction time and traffic flow…
“Expanded” or foamed asphalt recycling is a viable component for cold-in-place recycling (CIR) in Canada, write Peter Chan, candidate, and Dr. Susan Tighe, Ph.D., P.Eng, professor, Canada Research Chair, both of the University of Waterloo, Ont., in their technical paper, Exploring Sustainable Pavement Rehabilitation: Cold In-place Recycling with Expanded Asphalt Mix. Cold in-place recycling (CIR) is a well-established pavement…
Go to the Emulsion Task Force External Website Background of the Emulsion Task Force Pavement Preservation gained national importance in 1991 with the passage of the Intermodal Surface Transportation Efficiency Act (ISTEA) that gave state and local governments more flexibility in determining highway transportation solutions and management systems to guide them in making the best choices. The Act mandated…
TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2575 consists of 22 papers that explore asphalt materials and mixtures, including: Performance of a Highly Polymer-Modified Asphalt Binder Test Section at the National Center for Asphalt Technology Pavement Test Track Using Polymer Modification and Rejuvenators to Improve the Performance of High Reclaimed Asphalt Pavement Mixtures Dynamic…
AASHTO Journal, 16 September 2016 The Wisconsin Department of Transportation calculated that it saved nearly $1.5 million this year from four pavement projects that used an innovative “cold-in-place recycling” to replace road surfaces. WisDOT has been making annual evaluations of field data from cold-in-place recycling projects. Based on results gained so far, cold-in-place recycling has shown better performance against…
Pavement Preservation Journal Summer 2016, Vol. 9, No. 2 By Andrew Braham, P.E. The University of Arkansas is developing a research group for pavement maintenance and pavement rehabilitation products, and student involvement is introducing pavement preservation concepts to a new generation. Erica Yeung fabricates emulsion samples in the laboratory The private sector has been very supportive of advancing this…
Pavement Preservation Journal Summer 2016, Vol. 9, No. 2 At press time in April the growing slate of speakers – both firm and invited – for the No. 1 pavement preservation event of 2016, the 2nd National Pavement Preservation Conference, will give a delegates an idea of the value they will receive when they journey to Nashville. The theme…
Pavement Preservation Journal, Fall 2015 By Dr. Buzz Powell, P.E. The 2015 research cycle is now underway at the National Center for Asphalt Technology Pavement Test Track. The new research cycle will again consist of track sections with a focus on structural pavement design, optimization of surface mixes / materials, and pavement preservation / recycling. Data collection to carefully…
Better Roads, 18 August 2015 Tom Kuennen Just like the swelling froth of expanded liquid asphalt in a foamed asphalt application, use of foamed asphalt in warm mixes is growing exponentially, and its use for full-depth recycling and base stabilization of roads is increasing as well. Warm mix asphalt (WMA) production in the United States has exploded in recent…
Pavement Preservation Journal, Spring 2015, Vol. 8, No. 1 By Dr. Buzz Powell, P.E. The NCAT Pavement Test Track Conference – hosted by the National Center for Asphalt Technology at Auburn University Mar. 3-5 – marked the end of the 2012 research cycle and the beginning of the 2015 research cycle. Pavement preservation research at NCAT began in the…
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