Optimisation of rubberised concrete with high rubber content: An experimental investigation

By S. Raffoul, Reyes Garcia, K. Pilakoutas, M. Guadagnini, N. F. Medina. 2016

271 citations recorded by the source corpus.

This article investigates experimentally the behaviour of rubberised concrete (RuC) with high rubber content so as to fully utilise the mechanical properties of vulcanised rubber. The fresh properties and short-term uniaxial compressive strength of 40 rubberised concrete mixes were assessed. The parameters examined included the volume (0–100%) and type of mineral aggregate replacement (fine or coarse), water or admixture contents, type of binder, rubber particle properties, and rubber surface pre-treatments. Microstructural analysis using a Scanning Electron Microscope (SEM) was used to investigate bond between rubber and concrete at the Interface Transition Zone (ITZ). This initial study led to the development of an “optimum” RuC mix, comprising mix parameters leading to the highest workability and strength at all rubber contents. Compared to a non-optimised concrete with 100% replacement of fine aggregates with rubber, the compressive strength of concrete with optimised binder material and moderate water/binder ratio was enhanced by up to 160% and the workability was improved significantly. The optimisation proposed in this study will lead to workable high rubber content RuC suitable for sustainable high-value applications.

Subfields: Building and Construction, Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/2d1492ec409e6d1c9929c2b79d8dedba956a1118

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Building and Construction

In Civil and Structural Engineering

Citations in the corpus

Experimental assessment and constitutive modelling of rubberised concrete materials (2017, methodology): “6, primarily since above this limit the physical characteristics are strongly governed by the rubber and because of the concrete workability and slump decrease drastically [38].”
A comprehensive review on the mechanical properties of waste tire rubber concrete (2020, unknown): “The strength of the rubber concrete decreases with the increase in rubber content [19,20,51,55,97,98].”
Composites with recycled rubber aggregates: Properties and opportunities in construction (2018, background): “Recent research by Raffoul (2016) identified a lack of consensus on how to quantify the influence of rubber on the physical and mechanical properties of fresh and hardened concrete.”