Abstract Lignin is one of major by-product from wood and paper industry. As natural biopolymer, it could be a valid alternative as bitumen replacement and/or modifier to enhance the relevant performance asphalt mixtures, promoting concurrently environmental benefits. In this context, study focused on effects two different binders containing 30% lignin (by weight) mechanical properties bio-aspha...

Class C fly ash is a coal combustion product normally produced from lignite or subbituminous coal obtained as a result of the power generation process. In recent years, efforts were taken to incorporate self-cementing fly ash into full-depth reclaimed (FDR) asphalt pavements to improve the structural capacity of asphalt pavement base layers. In this study, an existing asphalt pavement in County...

A well established framework of an uncoupled hierarchical modeling approach is adopted here for the prediction of macroscopic material parameters of the Generalized Leonov (GL) constitutive model intended for the analysis of flexible pavements at both moderate and elevated temperature regimes. To that end, a recently introduced concept of a statistically equivalent periodic unit cell (SEPUC) is...

Received: June 06, 2017 Revised: July 05, 2017 Accepted: July 19, 2017 Abstract: Introduction: The use of polymer wastes in pavement as road is an increasing trend in the road construction sector. Those new pavements reduce the amount of solid waste disposed into landfills and provide more sustainable construction due to the use of in-situ materials. Polyurethane foam waste is a thermostable po...

Various forms of asphalt pavement distress, such as rutting, shoving, and bleeding, can be attributed, in many cases, to low air voids in the mixtures during production and placement. The occurrence of low air void contents during plant production may originate as a result of an accidental increase in binder content or mix fines (or both). When low air voids are encountered during production, t...

The demand for more sustainable transport infrastructure has led to a broader acceptance of waste materials in pavements. An excellent example this trend is the incorporation steel slag aggregates (SSA) asphalt mixtures. This work evaluates mechanical performance mixtures that include SSA their composition. Asphalt were evaluated through laboratory tests affinity between binder and aggregate, M...

Abstract Recycling tires is one of the eco-friendly way for reducing environmental problems. Incorporating crumb rubber in asphalt mixtures an alternative reusing end-of-life road construction. The main purpose this study to evaluate cold mix incorporating as a substitute part fine aggregates. In study, aggregate gradations design were selected according specification, Dense Graded Emulsion Mix...