“Building waste” means any substance, matter, or thing which is generated as a result of construction work and abandoned, whether it has been processed or stockpiled before being abandoned. It is a mixture of surplus materials arising from site clearance, excavation, construction, refurbishment, renovation, demolition and road works.
Over 90% of construction waste are inert and are known as public fill. Public fill includes debris, rubble, earth, and concrete which is suitable for land reclamation and site formation. When properly sorted, materials such as concrete and asphalt can be recycled for use in construction.
The remaining non-inert substances in construction waste include bamboo, timber, vegetation, packaging waste and other organic materials. In contrast to public fill, non-inert waste is not suitable for land reclamation and, subject to recovery of reusable/ recyclable items, is disposed of at landfills.