eduzhai > Applied Sciences > Engineering >

free file sharing Influence of the Temperature on Coated Bituminous of Road Structures in Senegal (West Africa)

  • KanKan
  • (0) Download
  • 20210225
  • Save

... pages left unread,continue reading

Document pages: 16 pages

Abstract: TheSenegalese road network is strongly influenced in the long term by seasonalvariations in climate and weather conditions. Indeed, much of the damage is dueto these environmental factors. The objective of this paper is to study thebehaviour of bituminous structures under the effect of high temperatures.Material samples were taken for a physico-mechanical characterization of thecoated components. The results show that Marshall creep (2.87, 3.39, 5, 5.5 mm)and the bitumen penetrability increase with the increasing of temperaturesrespectively from 34°C to 45°C and from 20°C to 50°C. Marshall Stability dropsfrom 15.81 kN to 11.31 kN for temperatures between 34°C and 45°C. Thesimulation carried out on Alize-LCPC shows an increase in distortions oftraction at the basis of the rolling layer and at the top of the platform iftemperatures vary between 34°C and 45°C. This work makes it possible to conformthat the bituminous concrete is thermally sensitive and the hypothesis offixing the constant modulus of the bituminous layers in Senegal for allprojects remains unsuitable for a good dimensioning of sustainable roadstructures. The knowledge of the equivalent regional temperature will make itpossible to produce quality pavements with a long lifespan.

Please select stars to rate!

         

0 comments Sign in to leave a comment.

    Data loading, please wait...
×