Abstract
This paper presents a performance of the open-graded asphalt concrete filled with a special cement grout in the road structures, introduces practical examples of the usage of this technology and defines the main properties. In addition, laboratory design of asphalt mixtures filled with special grout is researched. Finally, the results obtained from various laboratory tests are evaluated. The paper contains the open-graded asphalt concrete filled with a special cement grout mix design procedure and results of stiffness measurement, low temperature properties, permanent deformation and skid resistance. Open-graded asphalt concrete filled with a special cement grout mixture is compared to the commonly used asphalt mixes. The open-graded asphalt concrete filled with a special cement grout showed better results than the commonly used asphalt mixes by the stiffness and resistance to the permanent deformation characteristics but behavior at the low temperatures is slightly problematic.
Highlights
Hot mix asphalt (HMA) is commonly used material as a wearing layer for pavements of highways, streets, airports and other industrial areas
The aim of this paper is to evaluate the determined characteristics of designed opengraded asphalt concrete filled with a special cement grout (AC o-g CG) and compare to common asphalt mixes
The open-graded asphalt concrete filled with a special cement grout showed better results than the commonly used asphalt mixtures by stiffness and resistance to permanent deformation characteristics
Summary
Hot mix asphalt (HMA) is commonly used material as a wearing layer for pavements of highways (or roads), streets, airports and other industrial areas. Permanent deformation is a major mode of failure in flexible pavements consisting of both rutting and shoving. This problem is more common in hot climates where the stiffness of the asphalt mix is further decreased with the increase of pavement temperature (Hajj et al 2011). The occurrence of such deformations is increasing considerably during the hot period when air temperature rises up to 25–30 °C and asphalt pavement heats up to 40–50 °C (Laurinavičius, Čygas 2003).
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