Resource efficiency networks in the construction of new buildings

Abstract

This paper reports on a study to develop a construction resource efficiency stakeholder network in the UK. The primary stakeholders in the network were the client, designer and main contractor -the decision-makers on construction techniques, materials and products. The paper outlines the rationale for the study, development of waste-prevention measures and industrial networks, progressive implementation in three separate construction activities, barriers and practical constraints, key results, conclusions and recommendations. Improvements were achieved through increased specification and use of sustainably produced construction materials, greater separation of materials for recycling, increased reuse of materials and behaviour changes in energy and water use as a result of on-site monitoring.

Quality assurance in reverse logistics supply chain of demolition waste: A systematic literature review

“…The demolition sub-contractors do not possess the knowledge and skills required for efficient and effective source separation and subsequent storage of salvaged waste (Jiménez-Rivero and García-Navarro, 2016). However, Williams et al (2014) highlighted that the workforce who engage in on-site sorting should be skilful and knowledgeable about the regulations and the procedure of on-site sorting. Training is essential for workers who engage in the entire RLSC to implement QA practices effectively and efficiently (Calvo et al, 2014).…”

“…Regardless of these disadvantages, most of the dismantling sub-contractors follow this technique since it is easy and less time-consuming. In most cases, dismantled waste is not sorted on sites (Williams et al, 2014). Consequently, the DW that reaches the off-site sorting facility is mostly commingled and contaminated (Huang et al, 2018).…”

“…On-site sorting has become an obligatory requirement in some countries such as Hong Kong (Tam et al, 2008). It helps to segregate hazardous and contaminated waste on-site before they contaminate other waste (Williams et al, 2014). Therefore, on-site sorting helps to separate non-contaminated salvageable materials before reprocessing (Chileshe et al, 2019).…”

L'épreuve du tri sur site des déchets de la construction

“…Le tri sur chantier n'a rien de nouveau, mais la pratique a atteint une sorte de momentum aussi bien académique qu'opérationnel au cours de la dernière décennie, essentiellement parce qu'elle a été considérée comme une pratique essentielle dans la mise en place de pratiques d'économie circulaire et un pas décisif en termes de gestion environnementale des déchets de la construction (Ma et al, 2020). En permettant une séparation précoce des éléments, l'approche du tri sur site contribue à diminuer le risque de contamination par les matériaux dangereux ou autres corps étrangers (Williams et al, 2014). Dans de nombreuses études provenant de façon prépondérante de cas en Asie du Sud-Est, le tri sur site est ainsi analysé comme un mécanisme qui devrait contribuer à une amélioration du réemploi et des niveaux de recyclage, mais aussi à une réduction des coûts de traitement (Poon et al, 2001 ;Wang et al, 2010).…”

Analysis of the Effectiveness of Wastewater Treatment in Activated Sludge Technology with Biomass Recirculation

“…The process of expansion and modernization of wastewater treatment plants should be carried out based on building materials and technologies dedicated to this type of investment. This also applies to the waste management process at the construction site, storage methods of the wastes as well as methods of their recycling [28,29,30]. The growing interest of the scientific community in the optimization methods of technological processes in WWTP (Waste Water Treatment Plants) and in the events of crisis character caused by external factors and by systemic factors inside the plant is a response to the existing state of affairs.…”