Performance of Darwin Bridge Incorporating Ground Glass Pozzolan as Supplementary Cementitious Material

Portland cement is the most widely used construction material, but there are some limitations to using it to produce concrete, i.e., its durability issues and emission of a high amount of CO2 in its production. So, in this study, the ground-glass pozzolan (GGP) is used to partially replace the cement for the in-situ application. This field project used concrete with a 10% cement replacement with GGP to pour the Darwin bridges elements. These bridges won the 2021 Award of Excellence in the infrastructure category from the American Concrete Institute (ACI). The concrete is examined for the long term with respect to its performance by determining its fresh, hardened, visual and durability properties. It was found that concrete incorporating GGP demonstrated significant performance, with key properties such as workability, compressive strength, visual, and durability indices exceeding the desirable limits specified in relevant standards.