This will be useful for researchers, industry and clients who are interested in circular economy.
The use of recycled aggregate in Qatar and the Gulf region is relatively new, and can make significant contribution to the vast infrastructure development witnessed over the last decade. Lack of experience with recycled aggregates in the aggressive conditions of the Gulf, particularly lack of long-term performance data, have raised concerns on the durability and long-term performance of recycled aggregate in service, as compared to primary aggregates. The approach adopted in the book is to use practical evidence, based on site data in real exposure conditions up to 5 years in service, for the performance assessment of recycled aggregates. Recycled and alternative aggregates were used to replace primary aggregate at different proportions is various construction applications of asphalt, concrete and unbound granular products. The assessment was based on the basis that the construction products made with recycled and alternative aggregate should give at least equivalent performance to that of conventional construction products made with primary aggregate. The cost and environmental benefits associated with the use of local recycled and alternative aggregate materials are also presented. An innovative water footprint study was carried out to review the use of water by the construction industry in Qatar, and how it can b e used most effectively. Recommendations are made for the wider and more efficient implementation of recycled aggregate in construction.