Equipment World Digital Magazine
Issue link: http://read.dmtmag.com/i/506694
daily will differ drastically from one having 10,000 vehicles daily. Attention to detail While the sustainability moniker encompasses a broad spectrum of methods and activities, attention to detail is still important, particularly at each step of pavement construction. Jackson's company performs a wide variety of steps in creating sustainable pavements, including recycling all possible existing pave- ment materials on a project. "Usually this material is used as aggregate bases under new con- crete pavement," he says. "We are always looking for ways to save energy, including the location of our portable concrete batch plant to reduce material hauls, schedul- ing projects to be completed in the shortest duration possible, and tak- ing advantage of value engineering (VE) proposals. VE proposals save the contracting authority money and usually positively reduce both fuel usage and project time. When possible, Cedar Valley Corporation optimizes our concrete paving mix- es. This includes the use of waste products like slag and fly ash." Wathne believes full depth recla- mation, in concert with thin over- lays, could be the next set of steps for improved sustainable practices for concrete pavements. "Sustainable practices such as efforts on site, are faster," he says. "And contractors don't have to pay a disposal fee or bring in virgin aggregate. That's where contractors have control." For asphalt pavements, the May 2015 | EquipmentWorld.com 56 highway contractor | continued A 1-inch layer of warm-mix asphalt bond breaker being is set down for a Federal Highway Administration Highways for LIFE project in Texas. A 4-inch layer of warm-mix asphalt bond breaker being is set down for a Federal Highway Administration Highways for LIFE project in Texas.