An excerpt from the American Road & Transportation Builders Association (ARTBA)’s July/August 2023 Transportation Builder issue.
Have you ever heard the expression, “A chain is no stronger than its weakest link?” The adage can be applied to road construction. No matter how strong and durable your materials, if one component is breakable, the rest are compromised as well.
May is Motorcycle Safety Awareness Month. This is a great time to remind drivers about the importance of remaining aware and alert for motorcyclists. One way that the DOTs are helping keep riders safe is through the installation of rumble strips and reflective pavement markings.
Washington, D.C. – 2023 Transportation Research Board Annual Meeting
The Transportation Research Board (TRB) Annual Meeting was held in Washington, D.C. earlier this year. This year’s theme was Rejuvenation Out of Disruption: Envisioning a Transportation System for a Dynamic Future. The meeting included exhibitors from academia, industry, and government agencies presenting the latest research findings, technical developments, and implementation efforts within the asphalt industry.
Asphalt Materials and HRG Labs had the unique opportunity to present two different posters at this year’s Transportation Research Board (TRB) Annual Meeting in early January.
“Impact of Rumble Strips on Longitudinal Joint Pavement Performance”
“Comparative Life Cycle Assessment of a Void Reducing Asphalt Membrane and Other Longitudinal Joint Treatments“
In 2021, ClimeCo collaborated with Asphalt Materials, Inc. (AMI) to complete an LCA-based sustainability assessment of J-Band®, AMI’s void reducing asphalt membrane (VRAM) product. Together, ClimeCo and AMI wrote and presented their paper and poster titled, “Comparative Life Cycle Assessment of a Void Reducing Asphalt Membrane and Other Longitudinal Joint Treatments” at this year’s TRB Annual Meeting.
Caroline Kelleher and Gary Yoder from ClimeCo, Gerry Huber of HRG, and Todd Thomas from AMI are the paper’s authors. During the meeting, many attendees came by to learn more about the three sustainability attributes of J-Band: environmental, economic, and social (safety).
Important conclusions of this paper include the following:
There is significant potential to develop transportation infrastructure in line with the principles of sustainable development
Sustainability is an increasingly important component of transportation infrastructure, with federal, regional, and state entities having a range of awareness and education programs, all while promoting the use of ‘green’ or sustainable roadway products.
Upstream emissions associated with materials production are outside the carbon accounting of direct emissions, i.e., scope three instead of scope one emissions, and thus, as agencies and contractors look to reduce their scope one emissions, they will be evaluating methods and materials which will allow for a reduction in fuel usage.
Longitudinal joint solutions that offer the lowest application-phase emissions, reduced maintenance needs, and extended road lifetimes, will result in the lowest scope one emissions. In this analysis, VRAM and joint adhesive have the lowest construction phase emissions.
VRAM had the most economical life cycle cost performance compared to conventional joints and maintenance.
To read this paper, poster, other studies, and educational items about VRAM and J-Band, click the Resources link below.
Sustainability is very important to Asphalt Materials, Heritage Construction + Materials, and The Heritage Group. There are three pillars of sustainability: Economic. Environmental. Social/Safety.
Understanding Sustainability, LCAs, Cradle-to-Grave . . . and More!
There are many sources that use 3 pillars to help explain sustainability. But, explaining the three pillars of sustainability first requires defining sustainability. The concept of sustainability arose from environmental activism. It’s taken to mean making sure that the current generation can meet its needs without making it impossible for future generations to meet theirs. That is, we can sustain ourselves and posterity only with practices that do no future harm.1
We often hear talk about social sustainability, economic sustainability, and environmental sustainability. If we think of sustainability as the roof of a building that protects its occupants, we see that it takes all three pillars to hold it up. Sometimes people summarize them with the words people, profit, and planet. Weakness in any one pillar puts the roof in danger of collapsing. 1
Although the phrase “three pillars of sustainability” is common, one of the most helpful descriptions explains how they relate to each other via a Venn diagram. It comes closer to the related term “three spheres of sustainability.” In either case, no one of them can function optimally without both of the others as shown below.1
A Life Cycle Assessment A Life Cycle Assessment (LCA), offers a framework for quantifying the potential environmental impacts of a product from cradle–to–grave (i.e., from growth/extraction of raw material inputs all the way through a product’s disposal), allowing us to make that determination. One of the many applications of an LCA is its ability to demonstrate the environmental benefits achieved by adopting different operational practices.
In February 2022, Gary Yoder and Jaskaran Sidhu wrote a story titled ‘What is a Life Cycle Assessment?’ This informative article highlights important information such as:
A Product’s Competitive Edge: Performance and Cost
Benefits of Product vs. Alternatives
Quantified GHGs and criteria air pollutants (AQ)
Using LCAs for a More Sustainable Future
To read the entire article, follow the link below:
The Transportation Research Board (TRB) Annual Meeting was held in Washington, D.C. in early January. This year’s theme was Rejuvenation Out of Disruption: Envisioning a Transportation System for a Dynamic Future. The meeting included exhibitors from academia, industry, and government agencies presenting the latest research findings, technical developments, and implementation efforts within the asphalt industry.
An increasing number of agencies, companies, organizations, institutes, and governing bodies are embracing principles of sustainability in managing their activities and conducting business. Historically, sustainability referred to environmental sustainability and simply meant using natural resources in a way that people in the future could continue to rely on their yields in the long term.
Rumble Strips Are Becoming More Popular, But They Also Need To Be Protected
It is important to plan ahead when protecting the infrastructure investments made for our streets, roads, and highways. Reducing air voids is critical to improving pavement life. When air voids are higher, permeability is higher, and this will adversely affect pavement life.
“This research helps to confirm the direction the department has taken with recent changes to longitudinal joint specifications.”
– Project Manager Dan Kopacz, WisDOT
How to Create Better Longitudinal Joints?
The longitudinal joint is the Achilles’ heel of every paved road. Road managers know the first part of the pavement to fail is the longitudinal joint. As the road’s most permeable part, this joint is susceptible to the elements, especially with their inherently lower density. Air and water work down through this unavoidable seam in the pavement causing the joint to deteriorate, crack, and pothole. And when the longitudinal joint fails, the rest of the road soon follows — triggering the need for even more maintenance and costly repairs.