This study presents a finite element (FE) micromechanical modelling approach for the simulation of linear and damage-coupled viscoelastic behaviour of asphalt mixture. Asphalt mixture is a composite material of graded aggregates bound with mastic (asphalt and fine aggregates). The microstructural model of asphalt mixture incorporates an equivalent lattice network structure whereby intergranular...

This study investigated the effect of high asphalt binder replacement for a low N-design asphalt mixture including RAP and RAS on performance indicators such as permanent deformation, fracture, fatigue potentials, and stiffness, was studied. An experimental program included complex modulus, fracture, overlay reflective cracking resistance, wheel track permanent deformations, and push-pull fatig...

The objective of this study is to review existing literature in the area of nano-modification of asphalt and proceed to apply nano-materials to asphalt to improve the performance. This study integrates literature review, preparation, and characterization of nano-modified asphalt materials. In the experimental testing montmorillonite, nanoclay at 2% and 4% by weight of asphalt was blended in asp...

Language: English The Challenge At the outset the asphalt paving process seems to be simple. Trucks deliver hot mix asphalt from plants to the construction site. There the asphalt is loaded on asphalt pavers that evenly spread the asphalt. Finally, compactors compact the asphalt to its required density. Despite this relatively structured process our research shows that there are significant dis...

Reusing reclaimed asphalt pavement material guarantees a substantial optimization of non-renewable resources, emissions reduction, and decreasing landfill space, along with the economic benefits associated saving costs purchasing transporting new aggregate binder for concrete mixture production. This study aims to investigate influence aged from on virgin binder’s rheological properties. Theref...

Against the backdrop of global warming and depletion natural resources, new techniques alternative materials need to be explored integrated into road construction. Reclaimed Asphalt Pavement (RAP) is one waste that can reused in projects if its behavior better understood. Numerous researchers have studied use RAP both bound unbound pavement layers. However, mechanical deformation characteristic...