IWWG President participated in 2021 P4G Seoul Summit

The president of the IWWG, Evangelos Gidarakos, participated at the 2021 P4G Seoul Summit on Green Growth and Global Targets 2030.


18th International Waste Management and Landfill Symposium, 11 - 15 October 2021, Santa Margherita di Pula, Cagliari, Italy. Website

IWWG Russia and NIS Regional Branch: International Scientific Conference 2021

The IWWG Regional Branch for Russia and NIS is co-organizing the V International Scientific Conference "From Waste Management to Resource Recovery" to be held 2-3 Dec. 2021 in Perm, Russia.

ICLRS 2022

11th Intercontinental Landfill Research Symposium

June 2022, Wilmington, NC, USA.Website

IWWG Task Group on
Construction and Demolition (C&D)

TG Leader: Mohamed Osmani


Construction and Demolition (C&D) waste production equates to a large amount of carbon emissions that require all sectors of the economy, to a greater or lesser extent, to contribute to its reduction. The development and implementation of innovative and effective C&D waste management solutions will affect the contribution that waste management as a whole makes to climate change. The construction industry plays a leading role in improving the quality of the built environment, but its activities also impact on the wider environment in a number of ways, including waste production. The built environment consumes more natural resources than necessary and therefore generates a large amount of waste. It is difficult to give exact figures of construction waste produced in a typical construction project, but it is estimated that it is as much as 30% of the total weight of building materials delivered to a building site. In the USA, C&D activities generate over 170 million tonnes of waste per year, out of which 48% was estimated to be recovered. In terms of waste-designed facilities’ floor areas ratio, it is estimated most buildings in the USA generate between 20 to 30 kg/m^2 of C&D waste. In the European Union (EU), C&D activities produce the highest levels of waste, accounting for 855 million tons per year (33.3 % of the total EU waste; around four time household waste, which account for 221 million tons (8.6 %). At present, 75% of C&D waste in the EU is being landfilled, although over 80% recycling rates have been achieved in countries such as Germany and the Netherlands. In the UK, the disposal of C&D waste accounts for more than 50% of overall landfill volumes. Diverting C&D waste from landfill has a global political profile today unrivalled in recent historical times. Indeed, the last few years saw a combined plethora of waste related legislation, policies, strategies and guidance documents to curb waste production and increase recycling rates across all C&D sectors. To move forward with C&D waste agenda, a number of countries worldwide set ambitious targets and measures to monitor, support and implement ways to effectively manage C&D waste; including waste prevention, minimization, reuse, recycling, and energy recovery. Consequently, stakeholders in C&D sectors are under increasing pressure to improve their waste performance. Although the ideal of C&D sustainable waste management is well acknowledged and generally accepted, it is proving more difficult to implement. The IWWG set up the C&D Task Group to provide an international platform for C&D waste information exchange and dissemination; research and innovation; and practical applications for members and those engaged with the planning, procurement, design, construction, refurbishment, and demolition activities in the built environment.


Specific objectives of the group include:

  • Innovation and continuous improvement: identify C&D waste management best practice, develop collaborative new approaches, and enable innovation and continuous improvement.
  • Engagement and influence:  engage with C&D waste researchers, policy makers and regulators, clients, consultants, contractors and suppliers at international levels. This engagement provides IWWG members with a unique insight into policy and regulation updates; emerging methods and techniques; and the opportunity to influence policy and industry development.
  • Networking: knowledge sharing and exchange between research centres, groups, and individuals across the World to keep IWWG members informed on developments affecting C&D waste management in both construction and the wider built environment.
  • Knowledge transfer: C&D Task Group activities facilitate knowledge and best practice transfer between IWWG task groups on the one hand; and between business and the science-base, and businesses and across sectors on the other.
  • Conferences and events: IWWG rolling programme of conferences and events is designed to raise awareness, share knowledge and promote discussion on new and emerging WM topics, with specific discussions and workshops on C&DWM.
  • Publications: the majority of C&D Task Group activities culminate in the publication of joint journal and conference papers, guidance documents, and best practice case studies.


Topics dealt with by the Task Group include:

  • C&D waste and climate change.
  • C&D waste performance indicators and benchmarking.
  • C&D waste management standards and tools.
  • C&D waste management innovation.
  • C&D waste management practice: prevention, minimization, reuse, recycling, and energy recovery.
  • C&D financial implications.
  • C&D waste awareness, training and skills.
  • C&D waste best practice case studies.
  • C&D waste quantification.
  • C&D waste mapping and source evaluation.
  • C&D waste collaborative working.
  • C&D waste minimisation at source. 
  • Onsite C&D waste management.
  • Refurbishment waste.
  • Demolition waste.

Members and Membership

The C&D Task Group members represent a global network of leading academics; researchers; and industry managers.


Structure and operation mode

The task-group operates in close contact with other IWWG task groups, particularly the “Industrial Waste” and “Developing Countries” Task Groups. Meetings are held at least once a year and additional meetings could be organized if required.

Contact details:

Mohamed OsmaniMohamed Osmani
Senior Lecturer in Architecture and Sustainable Construction
Architectural Engineering and Design Management Programme Director
Chairman of the Construction Industry Research and Information Association
(CIRIA) Sustainability Advisory Panel
BS 8895 (Part 1 to 5) Panel Committee Chair 
School of Civil and Building Engineering, Loughborough University
Loughborough LE11 3TU; United Kingdom

Phone: +44 (0)1509 228155
Fax:     +44 (0)1509 223096
E-Mail:  m.osmani(at)lboro.ac.uk




Recovery potential of construction and demolition waste

21-22 March 2019

Belgian Building Research Institute (BBRI), Brussels

For further details on the workshop, abstract submission, registration and travel and accommodation information click here.