Save Fuel with Concrete Pavements
category: Fuel Economy
The National Research Council of Canada recently completed a study on fuel efficiency of commercial trucks on both asphalt and concrete pavements. The study demonstrated a statistically significant fuel savings for semi-tractor trailers (18 wheelers) on concrete versus asphalt pavements. The net result? Trucks traveling on concrete pavements use between 0.8% to 6.9% less fuel. For more reasons to choose concrete pavements, visit www.pavements4life.com
Have you encountered punch-out problems in Canada and if so how have you overcome them?
What do you about the generally higher levels of rolling noise on concrete?
And how do you cope with greater surface water problems compared to asphalt?
wont the portland cement concrete crack under the heavy loading? as compared to the asphalt concrete
Many studies have shown that the extra energy consumed during the production of cement is more than compensated for by the extra energy necessary during the more frequent repairs and replacements of asphalt pavements; yes, concrete pavements might consume more energy initially, but not over the course of the life of the pavement. The American Concrete Pavement Association (pavement dot com) has much literature to support this.
The ground freezing actually helps normalize this study because it increases the rigidity of the asphalt pavement, thus making the % in fuel savings less than it might be somewhere in somewhere warm like Florida where asphalt would deflect significantly more. Cement is actually only about 8% of a typical concrete paving mixture (no where close to the 20% you stated); SCMs account for about 3%, so the total cementitious materials account for about 11% of the volume.
The ground freezing actually helps normalize this study because it increases the rigidity of the asphalt pavement, thus making the % in fuel savings less than it might be somewhere in somewhere warm like Florida where asphalt would deflect significantly more. Cement is actually only about 8% of a typical concrete paving mixture (no where close to the 20% you stated); SCMs account for about 3%, so the total cementitious materials account for about 11% of the volume.
That’s interesting, but most of Canada it gets very cold in the winter and the ground freezes, concrete may not weather as well as asphalt. In addition, cement production (1/5 of the composition of concrete) is very high in energy consumption, would this equal the fuel savings for heavy trucks, if Canada’s major highways were re-done in concrete?
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