Feasible Use of Recycled Concrete Aggregates with Alumina Waste in Road Construction

Abstract

The management of different industrial by-products, such as recycled aggregates from construction and demolition waste and alumina by-products, as well as the reduction of landfill deposits by incorporating these products in a second life cycle, were the focus of this work. The aim of this study was to demonstrate the technical viability of using these waste and by-product as a material for road pavement base layers. For this purpose, a real-scale application was carried out, and the behavior of three types of materials, applied on a section of an experimental road under real vehicle traffic conditions, was studied and compared. Three materials were used in these sections applied in the road sub-bases. First, a control material composed of a type of artificial gravel was used to be compared with the rest of materials; the second material was composed of recycled aggregates, and the third was composed of a mix of recycled aggregates and alumina waste. The results concluded that the effectiveness of the sections built using recycled aggregates and alumina waste was very positive and similar those constructed using natural aggregates.

Critical Infrastructures: Reliability, Resilience and Wastage

“…This is logical, and a result of the duel meaning of the word 'waste', which is used in literature to cover both studies on sewage and litter (trash), as well as the term excess that is related to this study. Therefore, removal of waste management papers required manual filtering, such as the work discussed by Thiel et al, that discussed personal protective equipment (PPE) waste build up [29], demolition waste as in [30] or discussion of waste reduction through second life cycle as in [31]. Filtered works also included discussion of COVID-19 in waste samples as in [32].…”