The Structural Properties Assessment of Thin Hot Mixture Asphalt for Pavement Preservation

Abstract

Thin Hot Mixture Asphalt Concrete Overlays (THMACO’s) are comprised of a thin layer less than one inch hot mix asphalt concrete layer and a binder material/tack coat. The uses of thin layer are necessary to compromise with the environment issue especially to protect the natural resources and save the energy used during asphalt construction. THMACO’s can be used as preventative maintenance on pavement preservation or as a new surface on a pavementconstruction. This layeris usually regarded as non-structural layer at pavement design. However, this paper presents the structural assessment of this materials and their comparison to the conventional asphalt concrete mixtures. This research was conducted based on indirect tensile strength (ITS), unconfined compressive strength (UCS) and indirect tensile stiffness modulus (ITSM) of thin hot mixture asphalt. The results show that the thin hot mixture asphalt has performed slightly different on the Marshall and structural properties compare to conventional asphalt concrete.

Investigation of Asphalt Pavement to Improve Environmental Noise and Water Sustainability

“…In the ANSYS program, asphalt thicknesses of 4 cm, 7 cm, and 9 cm were modeled, and the durability properties of varying thicknesses were examined. In addition, literature studies were examined, and it was observed that the Young modulus of porous asphalt pavements can reach 4000 mPa [87,88], the Poisson's ratio could reach 0.35 [89], and the density value of porous asphalt pavements could reach 1.8 g/cm 3 [90]. The specified values were used in the modeling process of porous asphalt pavements in the ANSYS program.…”