OCTOBER 22, 2013 – Sully-Miller Contracting Co. has transformed the way FiberMat®, a Colas Solutions Inc. pavement preservation process, is provided on the West Coast. In order to have a greater presence in the pavement preservation market, the FiberMat® machine is now being offered as a daily-operated equipment rental to pavement preservation contractors, emulsions suppliers, and local and state agencies that self-perform their own chip seal maintenance in the states where Sully-Miller is currently licensed: Nevada & California.
FiberMat® is a specially formulated, polymer modified, crack resistant membrane that produces superior strength and flexibility. It forms a high tensile matrix upon application with a highly modified asphalt emulsion residue that is reinforced with engineered fiberglass strands.
The FiberMat® system is installed by a specially developed machine that uniformly applies the fiberglass strands in a continuous application. The strands are sandwiched between two layers of modified emulsion prior to application of an aggregate cover. The final product is then rolled to seat the aggregate into the surface. This combination of highly modified asphalt residue and a fiberglass reinforcement matrix creates a powerfully resistant membrane interlayer that absorbs stresses in the pavement structure and delays the onset of cracking. Continue reading →
All American Asphalt (Corona, CA) recently completed a ramp overlay project for Caltrans near Los Angeles, CA. The project included the overlay of several ramps on the Interstate 405 corridor just south of the LAX International Airport. The paving occurred at night to minimize the disruption to the travelling public, approximately 300,000 Average Annual Daily Traffic or AADT. A late season rain storm delayed the project a couple of days and lowered overnight temperatures to the 50’s. Even so, All American Asphalt achieved proper compaction with minimal placement issues.
Caltrans identified this project as a “pilot” for their evaluation of thenew Superpave specification, which they plan to implement in 2014 in lieu of the Hveem mix design process. This project was the first to include a Superpave mix design for a mix that includes Asphalt Rubber by incorporating 20% ground tire rubber. Continue reading →
West Coxsackie, New York – (Oct. 9, 2013) –– On Oct. 3, The PCA Rocky Mountain Region, Colorado/Wyoming Chapter of the American Concrete Pavement Association and the International Grinding & Grooving Association (IGGA) co-hosted an open house on concrete pavement preservation (CPP) in Highlands Ranch, Colo. The open house featured a site tour of one of the largest CPP projects to ever have been undertaken by a county entity.
The CPP project was carried out across various arterial and collector roadways throughout Highlands Ranch in Douglas County. The urban location, which included area businesses and local access to homes, made for a unique set of challenges. While the Federal Highway Administration, along with various state Departments of Transportation (DOTs), have well-established processes in place for CPP, local governments often have limited experience with state-of-the-art CPP methods. It is therefore of critical importance that when local governments embark upon preservation efforts, they manage the process carefully. The Douglas County Department of Public Works Engineering in Colorado achieved success by inviting industry members to weigh in early and establishing a firm plan before work got underway.
West Coxsackie, New York – (September 27, 2013) –– The federal government recently issued a new policy clarifying ADA curb ramp requirements for pavement alterations. As a major industry resource on pavement rehabilitation and restoration, the non-profit trade association International Grooving & Grinding Association (IGGA) is providing its members with guidance on this new information. “The development of this single federal policy should make it easier for roadway specifiers to determine the most effective and economical course of action when servicing their pavements. It will certainly make it easier for them to specify diamond grinding, dowel bar retrofit, resealing and other concrete pavement preservation treatments without the need for costly ADA alterations.” Continue reading →
Phoenix Industries announced today the successful completion of the first trial project with their new PelletPAVE Plus™ pelletized rubber modified binder. Approximately 150mix tons of the rubber modified hot mix asphalt was produced and placed in Pahrump,Nevada.
Continue reading →
Templeton Paving reached for Evotherm warm mix asphalt technology for their resurfacing job on Hwy 56 near Amherst, VA. Nustar Energy terminally blended the Evotherm into the asphalt used for the surface mix of 5.7% total AC and 25% RAP. Templeton Paving produced the mix in their Gencor drum plant at a mix temperature of 270⁰F with baghouse temperatures around 220⁰F throughout the day. Temperatures behind the screed consistently measured 260⁰F.
All cores were above the specification of 92.0% with densities reading 93-94%.The QC manager was pleased with both the mix and density numbers, wanting to lower the mix temperature further throughout the remainder of the project.
Author: Ryan Bragg
July 24, 2013
We need your help to protect and grow the asphalt market.
Unless Congress votes next year to increase the revenues going into thee Highway Trust Fund, the Federal-Aid Highway program will suffer a 90 percent reduction in 2015. Current expenses for the fund far outpace the money coming in from fuel taxes. At the same time, we face a challenge from thee cement industry, which continues to urge Congress to mandate life-cycle cost analysis on all Federal-Aidd Highway projects. NAPA believes pavement design and pavement type selection decisions should be guided by pavement engineers, not legislative mandates. Continue reading →
The European Roads Review’s Fall 2012 – Spring 2013 issue details Hubbard’s rehabilitation project on I-95 last year that compared the performance of WMA to HMA. Working with the Florida DOT, the project evaluated the performance of a Superpave 12.5 mm mix incorporating 30% RAP. Neither the hot mix control nor the Evotherm mix utilized an adhestion promotor. Evotherm is now an approved liquid antistrip in Florida.
Hubbard Group’s Taft asphalt plant in Orlando, Florida, produced the mixes at 200 tons/hour. HMA was produced at 325-340 F while Evotherm WMA was produced at 230-240 F. At the jobsite, the Evotherm asphalt mix was delivered at an average temperature of 224 F compared to 316 F for traditional hot mix. These temperature reductions of up to 100 Fahrenheit degrees provided multiple benefits:
- 23% lower fuel consumption
- 30% lower particulate emisssions (TPM)
- 48% lower NOx emissions
- Field densities from 92.5% to 93.5%
- Improved work environment (Florida gets hot!)
Back at the QC lab, tests on core samples showed that the WMA resistance to water damage was comparable to the HMA reference. To complement the laboratory analysis, a series of infrared thermographic photos were taken during the field placement operations. Shown below, they clearly illustrate the lower and more consistent temperature profile obtained when using Evotherm WMA and that lead to a higher quality asphalt paving job.
Author: Heather Dolan via European roads Review 21-22, Fall 2012- Spring 2013
(West Coxsackie, NY ― July 22, 2013) Selecting how long a given joint sealant will last before replacement — and what to include for the performance period in life-cycle costing — is not as easy as it may seem. The Seal/No Seal Group continues to investigate joint sealants and the factors affecting their life cycle through supporting new and ongoing research. As these tests proceed, the results are showing sealants 20 years old still functioning well.
Fairchild Air Force Base
In 1989, the U.S. Army Corp of Engineers Construction Productivity Advanced Research (CPAR) conducted a sealant performance study consisting of both laboratory and field evaluations. In 2012, Crafco realized that many of the sealant test sections were still in service and performing well. As a result, an additional evaluation was conducted by the same personnel who conducted the earlier evaluations. Continue reading →
Va.’s I-66 receives effective stone-matrix asphalt cap
By Trenton M. Clark,
P.E., David P. Shiells, P.E.,
and David A. White
Just west of Washington, D.C., I-66 in Fairfax County, Va., is one of the busiest commuter routes in the country.
Between 162,000 and 178,000 vehicles per day travel on I-66—far greater traffic levels than were expected when the road opened to traffic in 1963. A major pavement-rehabilitation project in 2011 and 2012 turned the stretch of road from a nightmare to a dream, with a smoother, quieter ride. Stone-matrix asphalt (SMA), a premium surfacing material for high-volume roadways, played a starring role in the transformation. Continue reading →