Use of Recycled Construction Waste Materials for Pipeline Bedding Application

Significant economic growth has been witnessed in Dubai during last twenty years primarily due to its business-friendly environments in the region. The management of construction and demolition (C & D) wastes in Dubai is aimed at encouraging the environmental sustainability of all projects. The volume of C & D wastes accounted for 6,638,471 tons in the year 2011. A laboratory investigation was conducted to determine the feasibility of using recycled C & D waste materials for pipeline bedding application. Samples were collected from a dump site near Umm Nahid, Dubai. Samples were processed to collect a mix of concrete waste and aggregates. Sieve analysis, Dry Density, and CBR tests were conducted to determine the suitability of this material for use as subgrade for the pipeline bedding. Concrete specimens 150 mm x 150 mm x 150 mm were prepared and tested for the compressive strength at the age of 7 days. Results of laboratory tests have demonstrated that recycled aggregates from construction demolitions and waste materials can be effectively used for pipeline bedding material thereby saving valuable resources and contributing to the sustainability.