TECHNICAL INNOVATIONS There are several ways to make roadways stiffer, the researchers said. One method is to add a very small amount Stiffer roads can help reduce efficiency loss stemming from the slight depression created in road surfaces by heavy-duty trucks. of synthetic fibers or carbon nanotubes to the mix when laying asphalt. Just a tenth of a percent of the "inexpensive Additives for professionals y ie fkc nc TEST BEDS AND FIELD-TESTS pr oven material" could dramatically improve its stiffness, they said. Another way of increasing rigidity is to adjust the grading © TOTAL - TOTAL ACS Making roads stiffer E FREIGHTLINER to expand the scope of industry and agencies' decision-making from considering only the construction cost to the 'lifecycle' cost," the researchers told Truck & Off-Highway Engineering. With the lifecycle approach for pavements, the researchers explained that vehicle fuel consumption is incorporated into the decision-making process. Also, the emissions and cost of pavement use will be considered; it can induce larger benefits for a given payback period. Looking to the future, Kirchain says that while projections show a slight decline in passenger-car travel over coming decades, they show an increase in truck travel for freight delivery - enough so where pavement deflection could be a factor in overall efficiency. The little more that makes you spend less acs.total.com TRUCK & OFF-HIGHWAY ENGINEERING Free Info at http://info.hotims.com/76532-703 August 2020 9http://info.hotims.com/76532-703