Concrete Construction News
Wirtgen will be showing several new machines for the first time in North America at the upcoming World of Concrete Trade Show. Wirtgen will be showcasing a slipform paver the SP 64i, one of three models of the new SP 60 series. Thanks to its versatility in inset and offset applications, the SP 60 series provides increased versatility in concrete paving. With its SP 60 series Wirtgen has developed a new generation of slipform pavers that combines the diverse applications of the globally successful SP 500 with the state-of-the-art technologies of the next larger SP 90 series.
Allen has announced the debut of their new HDX760 Riding Trowel. The HDX760 is a state-of-the-art, hydraulicallycontrolled ride-on power trowel that incorporates “Intelli-Power” to ensure peak performance, component safetyand extended life.
Roller-compacted concrete (RCC) got its start in the 1970s, when the Canadian logging industry switched to environmentally cleaner, land-based log-sorting methods. The industry needed a strong pavement to stand up to massive loads and specialized equipment, according to the Cement Association of Canada (CAC). Yet economy was equally important: log-sorting yards can span 40 acres (16 hectares) or more. RCC met this challenge and has since expanded to other heavy-duty applications.
ProAll Reimer Mixers operate on an entirely different principle than the typical concrete truck one might see on the road. Instead of mixing cement, aggregate and water at a batch plant, a Reimer Mixer delivers the constituents to the jobsite in separate bins and mixes them on the spot for a fresh mix anytime, anywhere. The technology offers several advantages, including the ability to deliver concrete over long distances to remote jobsites and the ability to control the composition of the concrete precisely as it’s delivered, including the addition of various other materials for special purposes, such as fibre, colour and many other chemical admixtures.
The new three-track Commander III Xtreme is unlike any other Commander ever built by GOMACO, and now has the ability to slipform a 24-inch (610-mm) radius. The new Extreme Package for multi-application pavers includes rotary-sensored slew drives for steering, sensored leg positioning, independent travel circuits to each track, radius software, GOMACO’s three-sensor radius system and repeatable mold offset.
The new S 38 SX from Schwing combines a tight (22’ 10”) front outrigger spread with a lightweight (Federal Bridge Legal) design and a five-section boom with more articulation than any other boom style. The new model is available in a three-axle configuration with cab-over truck or as a four-axle version with conventional truck to meet federal bridge laws. “This is a concrete pump that defines versatility for concrete contractors and pumpers,“ states Tom O’Malley, senior vice-president of sales and marketing for the manufacturer, “The new boom design hyper extends at every section to exceed the capabilities of Roll and Fold and Z Booms.” Key features of this one of a kind Roll and Fold boom are that all of the articulation is on the working side of the boom for faster deployment and it has the ability to snake the end hose deep into decks. The boom provides 106’11” of horizontal and 122’4” of vertical reach.
Production of up to 6 cubic yards per hour of cellular concrete on a continuous basis is now possible with the new Cretefoamer Model CS-6G which fits in a 3/4 ton pickup truck. It is designed to do jobs of 2 to 40 yards in less than a day. The cellular concrete can range from less than 30 pounds per cubic foot (pcf) up to 100 pcf or more.
The benefits to polyester concrete overlays for bridge decks and highways include shorter lane closures, increased live load capacities, higher tensile strength and a greater resistance to impact. The overlay can be placed as thin as ¾ inches and up to 12 inches thick in a single lift.
GOMACO introduced their new 3300 multiapplication slipform paver at Bauma 2016. It was specifically designed for right-side and left-side pour capabilities using a symmetrical design that makes it easy to pave from either side. Its U-shaped operator’s platform provides a complete view of the entire paving operation from anywhere on the platform and the control console easily slides from side-to-side to accommodate the direction of the pour.
Along the Appalachian Mountains from the Canadian–U.S. border to Tennessee runs Interstate 81 (I-81). Stretching for 1,376 km (855 miles), the route carries over 12 percent of the nation’s gross domestic product, and has subsequently been named the ‘trucker’s highway’. In recent years, hundreds of distribution warehouses have sprouted along this heavily trafficked corridor as Americans shift to online buying and demand shorter delivery times.
Designed as both a material transfer vehicle (MTV) and paver to significantly increase utilization rates, the rubber track Cedarapids CR662RM RoadMix from BOMAG features a new 260-hp (191-kW) Tier 4 Final Cummins diesel engine that delivers the power needed for high production applications. Boasting a low, 21-psi fully loaded ground contact pressure, the CR662RM can be used on all paving lifts, including the critical base layer, to virtually eliminate all forms of material and thermal segregation. Unlike MTVs with empty wheel loads in excess of 75 psi, the low-psi rubber track RoadMix machine does not cause rutting on the base layer, can cross bridges fully loaded and is transported to the jobsite like a 10-foot paver, so contractors can finish mainline and airport paving applications quickly, efficiently and with high mat quality.
Smaller, commercial jobs are demanding in their own ways, whether they are the parking lot of a new superstore, a new subdivision, or a small driveway on a county road. Gone are the days of “Make it black and don’t look back.” Today’s contractor must be aware of changing grade conditions, irregular mix designs and machines that have changed through the years as well.
The Easi-Pour 1000 paver is the largest model in the Easi-Pour line and is available in either track or rubber-wheel configurations. It is suited to a wide range of applications: curb and gutter, sidewalk, recreational paths, valley gutters, safety barriers and bridge parapets up to 72 inches (1.8 m) high, and flat paving up to 10 feet (3 m) wide. The 1000 can also be fitted with a monolithic trimmer for paving monolithic profiles of gutter, curb and sidewalk in one pass. Simultaneous trimming and pouring with the 1000 makes concrete placement more efficient.
The Carmix 3500 TC concrete mixer has a yield of 3.5 cubic metres, a double mixing blade, a 600-litre loader controllable with the Joymix (joystick). The machine can handle slopes up to 30 percent even when fully loaded.
Doug Oberhelman, Chairman and CEO of Caterpillar Inc., unveiled “The Age of Smart Iron” at Bauma 2016 – the world’s largest construction industry trade show. “The Age of Smart Iron” describes Caterpillar’s strategy to be the industry leader bringing digital solutions designed to improve productivity, efficiency, safety and profitability for customers.
Topcon Positioning Group has announced a new vehicle-mounted resurfacing solution for paving and milling projects – the SmoothRide system. It uses a combination of core Topcon technologies designed to deliver the smoothest surface possible, while efficiently managing the quantity of material for each project.
Learn more in the April issue of Heavy Equipment Guide.