HISER International Conference 2017: Advances in Recycling and Management of Construction and Demolition Waste

More than 100 researchers, engineers, representatives of the construction industry and students took part in the HISER International Conference, which was held from 21 till 23 June in Delft, The Netherlands. This conference intends to provide researchers, practitioners and industry experts with the opportunity to exchange the latest knowledge...

A survey on the construction and demolition waste in Mongolia

n many developing countries, the rapid growth of town and cities has generated a rising levels of waste and illegal dumps have become a serious issue. The booming construction industry in Mongolia has resulted in the production of massive amounts of CDW which is one of the largest waste streams. In Ulaanbaatar (UB) and other cities in Mongolia,...

Closing the loop of EOL concrete

Production of waste materials, via industrial and human activities, creates big environmental and economic problems but also opportunities to recover valuable resources. EU28 currently generates 461 million tons per year of ever more complex Construction and Demolition Waste (CDW) with average recycling rates of around 46%. There is still a...

Life cycle assessment and life cycle costing for demolition waste management

Ninety five percent of the construction and demolition waste is recycled in the Netherlands. Most of it is used for low value applications such as road base materials; the use of secondary material in buildings is still less than 3%7. In order to recover waste for higher value applications, enhancing selective demolition and waste management...

Numerical modelling of the dehydration of waste concrete fines: An attempt to close the recycling loop

The ever-increasing interest on sustainable raw materials has urged the quest for recycled materials that can be used as a partial or total replacement of fine fractions in the production of concrete. This paper demonstrates a modelling study of recycled concrete waste fines and the possibility of turning them into active constituents for the...

Feasibility of surface sampling in automated inspection of concrete aggregates during bulk transport on a conveyor

Automated optic inspection of concrete aggregates for pollutants (e.g. wood, plastics, gypsum and brick) is required to establish the suitability for reuse in new concrete products. Inspection is more efficient when directly sampling the materials on the conveyor belt instead of feeding them in a sampled stream to the sensor system. However,...

The influence of parent concrete and milling intensity on the properties of recycled aggregates

The C2CA concrete recycling process consists of a combination of smart demolition, gentle grinding of the crushed concrete in an autogenous mill, and a novel dry classification technology called ADR to remove the fines. The` main factors in the C2CA process which influence the properties of Recycled Aggregates or Recycled Aggregate Concrete (RAC...