New sustainable concrete with recycled aggregates and recycled tyre steel fibres towards net zero transition

  • Raman, Sudharshan N. (Primary Chief Investigator (PCI))
  • Yie Sue, Chua (Chief Investigator (CI))
  • Garcia, Reyes (Chief Investigator (CI))
  • Laory, Irwanda (Chief Investigator (CI))
  • Pourfalah, Saeed (Partner Investigator (PI))

Project: Research

Project Details

Project Description

Malaysia and the UK generate a combined stream of Construction and Demolition Waste (CDW) of 70+ million tonnes/year. Approximately 80% of this CDW is Recycled Concrete Aggregate (RCA) that can replace natural raw aggregates (sand and gravel) in new Recycled Aggregate Concrete (RAC). However, the strength of RAC is usually low and therefore it cannot be used in construction of buildings. The low strength of RAC can be increased by adding reinforcement such as internal Recycled Tyre Steel Fibres (RTSF) from waste tyres, or external active confinement. Nonetheless, scientific/technological challenges and uncoordinated research hinder the extensive use of waste materials in concrete. To bypass some of these challenges, this pilot project aims to develop new RACs with RCA and internal/external reinforcement for reduced environmental impact. For the first time, RAC with RTSF is produced, optimised and tested to valorise waste products from construction and tyre recycling industries. A novel Post-Tensioned Metal Strapping Technique (active confinement) is also trialled to enhance the strength of RAC. Several events will synergise academic/industrial efforts in Malaysia and the UK industry to speed up the transition towards more efficient uses of materials in construction. The project also sets out a joint routemap for achieving “net zero” in Monash-Malaysia's and Warwick’s Civil Engineering laboratories
Effective start/end date1/01/2431/12/24