FHWA Video Spotlights Real-Time Smoothness Sensors
- Wednesday, 16 September 2020 09:29
One of the many instructional videos from the FHWA is called, “Real-Time Smoothness Sensor Installation.” This ~7 minute video describes the two sensor types made by Ames Engineering and GOMACO Corp., both ACPA member companies.
Real-time smoothness sensors are attached to slip form concrete paving equipment and allow contractors to assess pavement smoothness during construction.
The video presents step-by-step instructions for installing the sensors, while also presenting tips and general information about using the sonic (GOMACO) and laser (AMES) sensors and on-board computers. Click here to view the video.
FHWA Spotlights Concrete Overlays
- Wednesday, 02 September 2020 12:51
It’s official: The Federal Highway Administration (FHWA) formally announced that pavement overlays have been selected by the agency’s Every Day Counts (EDC) program for rapid deployment.
The FHWA formally made the announcement Monday that targeted overlays pavement solutions (TOPS) including concrete pavement overlays have been formally selected as one of the innovations in the 6th round of EDC (for 2020/2021).
The current round of EDC innovations appear in the EDC’s updated website. Pavement overlays were one of seven innovations recognized in the current round.
FHWA describes overlays as, “Solutions for integrating innovative overlay procedures into practices that can improve performance, lessen traffic impacts, and reduce the cost of pavement ownership”
“Approximately half of all infrastructure dollars are invested in pavements, and more than half of that investment is in overlays. By enhancing overlay performance, State and local highway agencies can maximize this investment and help ensure safer, longer-lasting roadways for the traveling public.”
The FHWA notes that concrete overlays create improved pavements that last longer. The site also points to the many benefits of concrete overlays, including safety; cost savings; and performance. The agency also includes brief information about the state of the practice, which includes “recent improvements to design methods, interlayer technology, slab geometry, and concrete mixtures have broadened concrete overlay surface treatment applicability, reliability, sustainability, and cost-effectiveness.”
ACPA encourages members, chapters, and others to visit the FHWA EDC website to see more about the special recognition of concrete overlays.
Leif Wathne and John Adam represent ACPA and the CP Tech Center on FHWA’s EDC6 Innovation Deployment Team for Concrete Overlays.
FHWA Offers Tech Flyer on Air-Entraining Admixtures for Concrete
- Wednesday, 26 August 2020 09:40
One of the FHWA’s Mobile Concrete Technology Center’s (MCTC’s) recent technology transfer resource offerings covers air-entraining admixtures for concrete. This informative, one-page flyer describes what chemical air-entraining admixtures are and what they do. (Basically, they help form air bubbles that impart several important features of concrete).
The tech flyer describes why air is important to good quality concrete, what the difference is between air entrainment and encapsulation, and how air-entraining admixtures work. This information-packed document also describes the chemistry and classification of admixtures and the effect of materials and practices on air entrainment. There’s also a section that summarizes the specific ways the air-entrainment admixtures improve concrete durability.
Checklists and a table provide quick reference points and make the information even more accessible and easy to use. Whether you’re a seasoned concrete professional or relatively new to the business, this is a good resource for contractors, agency personnel, engineers, and others focus on placing durable concrete pavements. Click here to download a copy.
IGGA and the CP Tech Center Partner on Pavement Preservation Project
- Wednesday, 19 August 2020 11:44
The FHWA Every Day Counts (EDC-4) Program created a Pavement Preservation “HOW” peer-exchange project dedicated to improving specifications and construction quality and ultimately, the use of pavement preservation strategies.
The FHWA HOW program was contracted through the CP Tech Center, which enlisted the IGGA to help conduct the project. The project conducted 10 regional peer exchanges, each of which involved three to four participating states. In total, 37 states participated in the FHWA Peer exchanges.
For each of the peer exchanges, a tech brief was prepared to document the activities and to promote the lessons learned from each event. Click here to see the FHWA Tech Briefs.
FHWA Advances Long-Term Infrastructure Planning
- Wednesday, 12 August 2020 11:19
The FHWA Long Term Infrastructure Performance (LTIP) team held a conference call Monday to develop the final plans for workshops aimed at updating the LTIP data analysis plan.
The intent is to conduct workshops to focus national-level analysis of data collected through the Long-Term Pavement Performance (LTPP) program to address the most critical needs of highway agencies.
These virtual workshops will be scheduled to address five targeted areas organized.
- Improve design methodologies for new, reconstructed, and rehabilitated pavements.
- Optimize selection of rehabilitation and maintenance strategy and timing.
- Determine the effects of loading, climate, and materials on pavement performance and prediction.
- Determine the effects of design features on pavement performance.
- Comprehensive use of LTPP Findings (or data) to improve pavement (or asset) management practices.
During the meeting on Monday, volunteers for the five workshop breakout groups were identified, along with other potential volunteers.