A senior research team attended the International Conference on "Pavement Engineering, Asphalt Technology, and Infrastructure" in the Liverpool John Moores University.
The Qatari team presented a new research on the long-term performance of recycled materials in buildings and infrastructure applications.
The research is part of the QNRF funded project on the "Implementation of Recycled Materials in Construction", to support the government strategy of sustainable development through the wider implementation of solid waste, mainly from construction and demolition waste, in construction with the combined benefits of reduced costs and protection of the environment.
The Qatari research successfully demonstrated the in-service performance of concrete buildings and road pavement constructed with recycled aggregate materials after being exposed to loadings and climatic conditions for 5 years.
Recycled materials of excavation and demolition waste and incinerator bottom ash were used to replace up to 50 % of imported gabbro in structural and non-structural concrete, and up to 100% of local limestone and dune sand materials used in road construction.
Visual inspections and site data showed good performance, with no obvious differences between the recycled and primary materials, with reduced cost and less carbon emission.
The outcomes provide confidence in the wider implementation of recycled materials in high value construction applications.
The Qatar research was well-received by the audiences, and selected for publication in the International refereed Journal of Pavement Engineering and Asphalt Technology in the UK.
The recycling implementation project, led by the Ministry of Municipality and Environment, also includes various workshops and training courses for developing Qatar's capacity for recycling in construction through a well-developed research and development workforce and improved quality education for the construction industry.
The senior research team included of Dr Mohammed bin Saif Al Kuwari, Assistant Undersecretary and Director of the Environmental and Municipal Studies Institute at the Ministry of Municipality and Environment, Dr Khaled Hassan, Managing Director of the Infrastructure Research and development (IRD) at the Qatar Science and Technology Park, and Dr Murray Reid, geotechnical expert at IRD.