The screed makes the mat. Choosing the right mount boils down to preference, training
Though it’s the paver that usually gets the glory, it’s the low-profile screed that really makes the mat. For contractors, how you roll comes down in a big way to choosing a front-mount, rear-mount or the more uncommon fixed-mount screed
Fixed-width screeds, popular until the turn of the century, now represent only 2 or 3 percent of the market and are predominantly used for paving long sections.
Front-mount screeds manage material easily through the pass, with the mix typically in front. Rear-mount screeds are favored for wide-width paving.
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ARDCO intros new dump beds for its off-road articulating trucks
After launching new articulating trucks last year, ARDCO has followed up with new dump beds for the off-road multipurpose vehicles.
The beds, made for the ARDCO AMT 400 and AMT 600 trucks, range in payloads of 10 to 20 tons and can be added or removed from the modular truck platforms.
The dump bed for the six-wheel-drive, 250-horsepower AMT 600 has a 40,000-pound payload and a dump capacity of 16 cubic yards. Side boards can be added to increase capacity to 24 cubic yards.
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With articulated dump trucks topped out at 60 tons, OEM focus shifts to smaller, more nimble models
Why has the capacity of articulated dump trucks seemed to have plateaued at the 60-ton level? “It’s simple physics compounded by the conditions in which an ADT typically operates,” says Aaron Kleingartner, marketing manager, Doosan Infracore North America. There are limits imposed by how the load is carried, especially weight shifts and balance as the trucks turns, he adds.
Tires are another limiting factor, says Rob Palermo, Volvo Construction Equipment. Tire scrub and sidewall damage are multiplied as payload increases. Could tire manufacturers design and build tires for 80-ton ADTs? Maybe. But, says Palermo, “no one’s asking for bigger trucks, so there’s no real pressure to develop tires to accommodate greater payloads.” He says customers who need big trucks are well served by current offerings. At quarries and pits, for example, “customers are just happy they can use the same 60-ton truck for removal of overburden and the subsequent production process.”
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Case unveils the TV450, its largest CTL yet
Weighing in at 10,610 pounds, Case’s newest large-frame compact track loader is also the company’s largest to date, promising plenty of power for residential, site prep or forestry work.
Powered by a 90-horsepower, Tier 4 Final engine, the vertical-lift TV450 provides 4,500 pounds of operating capacity at 50 percent tipping load. The loader also boasts 9,188 pounds of bucket breakout force and 7,773 pounds of lift cylinder breakout force.
“It’s a powerful, large-frame loader that handles heavy materials and still provides the advantages of low ground pressure for jobsites where finished lawns and underground utilities may exist,” Deborah Townsley, Case CE product marketing manager, says in a written statement.
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JCB to sell its first electric excavator, the 19C-1 E-Tec, later this year
Citing customer demand for a zero emissions excavator that can work in close quarters, JCB will begin selling its very first electric model later this year.
Developed in secret under a project the company says was spearheaded by JCB chairman Lord Tony Bamford, the 2-ton (1.9-tonne) 19C-1 E-Tec mini excavator works all day on a single, six-hour charge. The machine can be charged with a standard domestic electricity supply, the company says. A fast charger, which is capable of cutting charge time in half, will be an available option.
The machine will be able to work indoors, underground and close to people in urban areas, according to a JCB press release. A retractable undercarriage allows it to negotiate tight spaces.
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