Category: Seminars

The Properties of Modified Asphalt Binders Blended with Electronic Waste Powders

Civil Engineering CE 5990 Graduate Seminar

Thursday, January 26
Time: 4–5 p.m.
Location: Dow 642
Public is welcome

Presenter: Baron Colbert, Ph.D. candidate, Department of Civil and Environmental Engineering (Adviser: Dr. Zhaping You)

Abstract: This study was intended to successfully implement asphalt binders modified with electronic waste (e-waste) from recycled computer plastics in order to improve asphalt binder performance versus conventional asphalt binders. The e-waste powder percentages blended with asphalt binders were 2.5%, 5%, and 15%, respectively. Rotational viscosity, dynamic shear rheometer testing, and bending beam rheometer testing was conducted upon modified and virgin asphalt binder samples. The addition of e-waste powders increased binder viscosity, blending and mixing temperatures, decreased rutting susceptibility versus virgin asphalt binders, and lower percentages of e-waste powders modified asphalt binders resulted in similar m-values at the specified low temperature grade of the control asphalt binder.


Development of Dynamic Asphalt Stripping Machine for Better Prediction of Moisture Damage of Porous Asphalt Pavement in Malaysia

Civil Engineering CE 5990 Graduate Seminar

Thursday, January 26
Time: 4–5 p.m.
Location: Dow 642
Public is welcome

Presenter: Mohd Rosli Bin Mohd Hasan, Ph.D. candidate, Department of Civil and Environmental Engineering, (Adviser: Dr. Zhaping You).

Abstract: Stripping is a major source of pavement distress and takes place in the presence of moisture. Over the years, many laboratory tests have been proposed to evaluate moisture sensitivity of asphalt mixtures. This seminar will cover the development of a dynamic asphalt stripping machine (DASM) to realistically simulate stripping of porous asphalt mixtures subjected to the dynamic action of flowing water, especially for the Malaysia condition. The topic also covers the background of invention, operational steps and preliminary evaluation on the DASM based on the permeability and indirect tensile strength test results.