Influence of Compressive, Tensile and Fatigue Stresses on Asphalt and Concrete Cement Road Pavements in Nigeria - Using Linear Elastic Theory

Abstract

The high brittle nature of pavement structures have been carefully examined based on compressive, tensile strain and the harsh effects of fatigue cycle with reference to the base layer thicknesses and elastic strains during and after construction were examined. Subjection of asphalt and concrete-cement pavements to traffic loading and tyre pressure also influences the vertical stress and strain values for the asphalt and concrete materials under the same axial loading conditions. Using various fundamental equations under linear elastic conditions for the analysis of Asphalt and Concrete Cement structure revealed that both materials do respond differently to compressive and tensile stresses under similar mechanical conditions. Effect of compressive stresses and strains on concrete pavement is larger compare to asphalt pavement due to large thickness sub-base layer of its pavement structure. Both pavement layer thicknesses are independent of fatigue cycle under harsh traffic loading. Thus, concrete pavement has shown better fatigue resistance and less tensile strain values than asphalt pavements due to high pavement layer thickness regardless of the load distribution.

Mechanistic Mathematical Modelling of Pothole Development from Loss of Roadway Subsurface-Materials

“…Roadways are infrastructures used to convey goods with both living and nonliving creatures. Studies show that pothole occurrences on these roadways are a known engineering problem [1][2][3][4]. It reduces the lifespan of these roadways.…”

“…Pothole deformation occurs as bowl-shaped holes of many sizes in the roadway surface. Studies described why and how potholes occur [1][2][3][4]. They stated that potholes occur because of the application of excess traffic-load and water present on the road.…”