A comprehensive data driven study of mechanical properties of concrete with waste-based aggregates: Plastic, rubber, slag, glass and concrete

Abstract

In an attempt to reduce the consumption of natural resources, much research has focused on the development of mix designs with waste aggregates. While this research has demonstrated feasibility, investigations into the broader mechanical properties of concrete with various types of waste aggregates have been limited. To this end, this paper studies a wide variety of concrete properties with plastic, rubber, slag, glass and recycled concrete aggregates by analysing a large database of 5321 concrete mixes. The effects of waste aggregate type and replacement ratio on mechanical properties, workability and durability are investigated and relationships between the mechanical properties of concrete with various types of waste aggregates are quantified and compared to the existing design codes. The findings from this study can be used to assist in identifying optimum waste aggregate type and replacement ratio based on intended use and the databases compiled will assist in future data-driven modelling approaches.

Keywords

• Waste-based aggregate concrete
• Waste aggregate type
• Fresh and hardened properties
• Empirical models