Equipment to Pave Thick and Thin

From Asphaltpro Staff

The ultrathin bonded wearing course (UTBWC) treatment is a gap-graded surface layer that incorporates an asphalt emulsion tack coat immediately followed by a 3/8- to 3/4-inch polymer-modified asphalt pavement. To achieve this, contractors are advised to use a paver equipped with a spray bar in front of the screed.

During a presentation to industry May 30, 2023, representatives of the National Center for Asphalt Technology (NCAT) and MnRoad shared data from a variety of test sections and trafficked roadways where open-graded friction course (OGFC) and UTBWC surfaces had provided information for researchers and departments of transportation (DOTs). Amid the presentations, the use of spray pavers to get best results was discussed.

One participant shared the Alabama DOT requires micro-milling and the use of a spray paver on UTBWC projects. Another participant spoke of the need to either purchase or rent a spray paver to bid on these projects in the state of Minnesota. Share your experiences with getting a UTBWC executed perfectly on our facebook page when this article goes live. In the meantime, check out the spray pavers that original equipment manufacturers (OEMs) have taken the time to bring to your attention with AsphaltPro.

Astec Industries of Chattanooga offers the Astec SP-200 Spray Paver with a Tier 4F, Cummins® QSB 6.7 230-horsepower engine. Its spray system comprises:

• A spray bar containing three rows of spray nozzles that are controlled automatically by a microprocessor

• The spray bar can extend with the screed extensions

Visit https://www.astecindustries.com/ road-construction for more information.

Dynapac North America of Fort Mill, South Carolina, offers the SD2500CD PROTAC spray paver. Its spray system features:

• 25 independent nozzles that are automatically activated by moving the spray bar or extending the screed.

Visit https://dynapac.com/en/products/ paving?tab=products for more information.

Vogele of Antioch, Tennessee, offers the SUPER 1800-3i SprayJet paver with a Cummins B6.7 - C173 173-horsepower engine. Its SprayJet module comprises:

• 24 spray nozzles with a spray pressure up to 43.6 psi on five spray bars that pivot two ways.

• Spray width of 8 feet, 4 inches to 19 feet, 8 inches.

Visit https://www.wirtgen-group.com/ ocs/en-us/voegele/voegele-products-94-c/ for more information.

Additional paving and pavement maintenance equipment for all paving methods and treatments are found in the product galleries of this publication. Check out the next few pages for those the industry was ready to share with you this month.

Astec

Astec Industries, Chattanooga, debuted its RX-405 cold planer at CONEXPO-CON/ AGG 2023 in the spring. The asphalt mill is designed for contractors who need a smaller cold planer.

Kyle Neisen, product director for Astec, said, “We're excited to offer the RX-405 so that all contractors can benefit from the Astec lineup. Contractors of all sizes now have a machine that they can take to size-restrictive job sites like trenches, utility work and parking lots.”

The RX-405 features all new control stations that focus on user comfort and intuitive use. “The button layout and joysticks offer allday comfort for long jobs,” Neisen said. With the new control station design, operators can protect the controls from tree limbs and other obstacles by adjusting the tilt on-the-fly. The same tilt mechanism can turn the controls all the way over for safe storage and protection when the machine is not in use.

The compact mill is designed to make changing drums fast and easy. “The RX-405 has a hinged door on the side of the cutter housing that provides quick access to all the necessary parts,” Neisen said. “The side-door is part of a single cutter housing that can transition from 2 feet to 5 feet wide so that no matter what job site you're headed to, the base machine is ready to go.”

The RX-405 is designed to make drum maintenance better as well. The machine features a belt lifter that takes the belt off of the main engine sheave, disabling the engine’s ability to turn the drum during tool changes. The mill also includes a drum indexer, which remotely turns the drum, making it easy to get the drum to a good spot. Neisen added, “You're no longer pulling hard on the drum, nor are you worried about the engine engaging it.”

The new cold planer can also be equipped with a rear object detection system, which uses a camera system to spot objects that might end up behind the mill. The system includes buttons at the back to temporarily lock-out the machine from reversing. Neisen said, “If you plan to walk behind the machine, you can simply press the button on one side and stop the machine—tap either side button again when no longer behind the machine. When any of those buttons are engaged, the machine will not allow the operator to go in reverse.”

For more information, visit www.astecindustries.com.

Bomag

Bomag Americas, Ridgeway, South Carolina, featured two of its new generation milling machine designs at CONEXPO-CON/ AGG 2023 in Las Vegas.

Offering a maximum 42.7-inch milling width, the BM 1200/35-2 features an enhanced swiveling mechanism for selective milling of road and ground surfaces, making it ideal for county road, urban and roundabout applications.

The BOMAG BM 2200/65 large planer boasts a 58-inch milling radius to increase efficiency in tight-radius applications like small cul-de-sacs. The BM 2200/65 mill displayed at CONEXPO-CON/AGG was equipped with the Bomag exclusive Ion Dust Shield. With this unique system that protects machine workers, fine dust extracted from the milling chamber passes through the Ion Dust Shield box before being blown onto the conveyor belt. Read more about that at TheAsphaltPro.com.

Both of these new Bomag milling machines are designed with vibration-isolated operator stations with height-adjustable seats that swivel 45 degrees in either direction to improve visibility. Enhanced forward visibility offers operators a view of the cutting edge, milling track and the front danger zone around the conveyor.

To simplify milling control, Bomag offers Easy Level that clearly displays grade and slope settings on the large 7-inch display. Mill settings can be quickly changed with minimal navigation and limited submenus on the monitor. Variable milling speeds between three application-specific presets on the control panel allow the operator to tailor drum speed to the material to increase milling efficiency.

Specs of the BOMAG BM 1200/35-2 include:

• 350 hp (260 kW), Tier 4 Final/Stage V engine

• milling at depths reaching 13 inches

• maximum operating weight is 56,000 pounds

• discharge conveyor swivels 45 degrees; maximum discharge height of 15.7 feet

Specs of the BM 2200/65 half-lane include:

• 630 hp (470 kW) engine

• milling to depths reaching 13.8 inches

• weight is 60,296 pounds

• discharge conveyor has 130˚ conveyor slewing angle – 65˚ to the left/right of center; 16-foot discharge height

For more information, visit your local Bomag dealer through www.bomag.com.

Ditch Witch

Ditch Witch® of South Louisiana (DWSLA), located in Geismar, announced in May it will carry the full line of Takeuchi excavators, compact track loaders and wheel loaders. They will also provide equipment rentals, replacement parts and serve as authorized Takeuchi equipment repair centers for customers throughout a multi-county area in Southern Louisiana. DWSLA also offers mobile solutions for Takeuchi sales, parts and service with a traveling sales team and equipment technicians. Steve Jester founded DWSLA in 2002, and with his family, he continues to own and operate the dealership’s locations in Geismar and Lafayette. Because almost all Ditch Witch customers also own excavators or track loaders, the addition of the Takeuchi equipment line compliments the Ditch Witch equipment line.

Dynapac

Dynapac North America, Fort Mill, South Carolina, in collaboration with sister company Secmair, is launching a new spray paver labeled the SD2500CD PROTAC. It is designed to apply the emulsion and asphalt pavement mix in a single operation. The manufacturer states it is primarily designed for two application areas. The first is for the application of thin asphalt surface layers using “thin layer in hot paving on sealant.” The second is for road repair, as well as for new road construction and everyday asphalting tasks.

The spray paver has a basic width of 8.4 feet and its maximum spray width is 6.5 meters. The 25 independent nozzles are automatically activated by moving the spray bar or extending the screed. The Dynapac spray paver can hold up to 555 gallons (2,100 liters) of emulsion and is equipped with a fill- ing neck and level display on each side. The combination of heating mats and a heating rod with a total heating capacity of 18 kW ensure gentle, yet rapid heating, according to the manufacturer. The heating mats are designed to prevent separation of the emulsion. Even smaller amounts of 26 gallons in the tank can be warmed up, according to the manufacturer. Both the heating rods and the heating mats are controlled automatically. For more information, contact dormie.roberts@dynapac.com

Ergodyne

Ergodyne, St. Paul, Minnesota, makers of Tenacious Work Gear®, has announced the launch of three new hi-vis vests. Leading the lineup of new hi-vis vests is the GloWear® 8251HDZ-BK Two-Tone Hi-Vis Safety Vest—Type R, Class 2, boasting a range of advanced features to ensure optimum safety and efficiency job site. The GloWear® 8315BA Hi-Vis Breakaway Safety Vest— Type R, Class 3 Vest features a breakaway design for immediate disconnection when entangled, minimizing the risk of accidents and injuries around machinery and moving parts. Rounding out the new trio is the GloWear® 8210Z-BK Mesh Hi-Vis Safety Vest—Type R, Class 2.

Beyond the new vests, Ergodyne provides a responsive, full-scale program designed to assist safety professionals in navigating the complexities of compliance. This holistic approach ensures that Ergodyne's product offering goes beyond gear, empowering safety professionals to make informed decisions and prioritize worker safety.

For more information, call (651) 642-9889.