John Deere intends to use a package of technologies in its new diesels to achieve the low emissions performance required for Tier 4 Final/Stage IV compliance in the US and Europe. The regulations maintain the strict particulate matter (PM) emission levels established by Interim Tier 4/Stage III B regulations, while requiring an additional 80% reduction in nitrogen oxides (NOx). To meet Final Tier 4/Stage IV emissions regulations in some power categories, John Deere has developed what it calls the Integrated
John Deere intends to use a package of technologies in its new diesels to achieve the low emissions performance required for Tier 4 Final/Stage IV compliance in the US and Europe. The regulations maintain the strict particulate matter (PM) emission levels established by Interim Tier 4/Stage III B regulations, while requiring an additional 80% reduction in nitrogen oxides (NOx). To meet Final Tier 4/Stage IV emissions regulations in some power categories, John Deere has developed what it calls the Integrated
A diverse array of advanced paver designs is now being offered in the asphalt paving sector – Mike Woof reports With the World of Asphalt and INTERMAT 2012 events having both taken place in recent months, a series of innovations have been introduced for the asphalt paving market. Developments have come to market that widen the array of both US and European asphalt paving systems and all the major manufacturers have developed new pavers and materials feeders to meet the latest emissions requirements.
Demand
Although it has been around since the 1970s, roller compacted concrete (RCC) is starting to look a whole lot more attractive, thanks to the rising price of bitumen. Now the challenge is to define specifications and tests to help ensure quality - Kristina Smith reports. At a meeting of the American Concrete Pavement Association in December 2011, there was a sea-change in the attitude towards roller compacted concrete (RCC). Up until that point, the feeling among the 400-plus members, of which half are contra
