Dr. Chait Bhat, Ph.D., LCACP is the Sustainability Engineer for the Asphalt Institute.

Contracting mechanisms, project delivery methods and green public procurement 
Part 2 – Implementation scenarios 

Part 1 covered fundamentals around different project delivery methods. In this edition, I will first discuss Green Public Procurement (GPP) and how sustainability and GPP may be employed at various scopes. I will then summarize conventional as well as alternative contracting mechanisms that have been used by public agencies. Lastly, I‘ll present a potential sustainability and GPP implementation scenario matrix when different project delivery methods and contracting mechanisms are employed. 

By Dr. Amma Agbedor, Ph.D., P.Eng.

Advancing asphalt: A novel approach to assessing mixture workability

What is workability? 

Workability, in the context of material properties, refers to the ease with which a material can be shaped, formed, or manipulated into a desired form without fracturing or damaging the material. It’s an important property in various fields such as engineering, construction, and manufacturing, where materials need to be processed or worked on to create final products.