Construction Waste Management System Research Articles

Evaluating the effects of policies on building construction waste management: a hybrid dynamic approach

The construction industry, as a vital pillar of a country's economy, generates a significant amount of construction waste, which places a tremendous burden on the environment and society. Although previous studies have explored the impact of policies on construction waste management, there is a lack of a simulation model that can be easily used, taking into account the dynamic nature, generality, and practicability of the model. To fill this gap, a hybrid dynamics model of construction waste management system is developed using agent-based modeling, system dynamics, perceived value, and experienced weighted attraction. Based on relevant data from the construction waste industry in Shenzhen, China, the effect of five policies on contractor strategy selection and overall evolution is tested. The results indicate that industry rectification policy and combination policy can effectively promote the resource treatment of construction waste and reduce illegal dumping, pollution to the environment of waste and treatment process, and waste treatment cost. The findings of this research will help not only researchers better analyze the effect of construction waste policies but also policymakers and practitioners in proposing effective construction waste management policies.

Project management in construction while ensuring environmental safety

All stages of the object's life cycle consistently address environmental safety issues of construction projects in accordance with legal requirements. The analysis of environmental security problems in practice necessitates the consideration of multidimensional environmental challenges, emphasizing the significance of the research in this area. In the development and implementation of projects, emphasis must be placed on the sustainable development of the construction site and the surrounding region. Sustainable development in the construction industry entails the practical fulfillment of a set of indicators, including environmental, social, and economic factors, at the required levels. This study aims to investigate project management issues in the construction industry across all stages of the lifecycle, with a focus on ensuring environmental safety. The study involved analyzing current trends and approaches to the environmental component of construction projects, developing a project for an automated construction waste management system in Russian cities, conducting a SWOT analysis of the digital control project for construction and demolition waste management, assessing the economic efficiency of implementing the digital control project, and creating an algorithm for managing construction projects while ensuring environmental safety. The findings of this study offer practical recommendations that may be useful for project managers and civil engineers in the construction industry for ensuring environmental safety during project management.

Multi-stage network-based two-type cost minimization for the reverse logistics management of inert construction waste

The growing concerns for achieving sustainability has gained much attention from waste management experts with particular focus on reverse logistics, as it supports concepts like circular economy, material recovery, and improved environmental performances. This paper describes a multi-stage network-based model to minimize the overall cost for the reverse logistics management of inert construction waste across its entire life cycle. This model takes a unique two-type costing approach to overcome the ambiguities and deficiencies existing in previous models. Type-I cost refers to the facility-based costing (FBC) and Type-II cost refers to non-facility based costing (NFBC). The mixed-integer linear programming technique is applied using the LINGO software. A case study of construction waste management in Hong Kong is conducted to validate the developed model, which includes waste generation point as the starting node, public fill reception facility and recycling facility as an intermediate node, and landfill as an ending node. The result shows about 24% reduction in the total cost compared to the base case. Furthermore, to evaluate the impact of uncertainties on the cost parameters, a detailed scenario based sensitivity analysis is conducted. The optimal result shows that the larger portion of total cost come from the NFBC component. Therefore, NFBC is critical in defining the overall reverse logistics network and thus, should be given more emphasis in the design of an effective construction waste management system.

System Dynamics versus Agent-Based Modeling: A Review of Complexity Simulation in Construction Waste Management

The environmental impacts caused by construction waste have attracted increasing attention in recent years. The effective management of construction waste is essential in order to reduce negative environmental influences. Construction waste management (CWM) can be viewed as a complex adaptive system, as it involves not only various factors (e.g., social, economic, and environmental), but also different stakeholders (such as developers, contractors, designers, and governmental departments) simultaneously. System dynamics (SD) and agent-based modeling (ABM) are the two most popular approaches to deal with the complexity in CWM systems. However, the two approaches have their own advantages and drawbacks. The aim of this research is to conduct a comprehensive review and develop a novel model for combining the advantages of both SD and ABM. The research findings revealed that two options can be considered when combining SD with ABM; the two options are discussed.

Improvement of the material and transport component of the system of construction waste management

Relevance of the topic of selected research is conditioned with the growth of construction operations and growth rates of construction and demolition wastes. This article considers modern approaches to the management of turnover of construction waste, sequence of reconstruction or demolition processes of the building, information flow of the complete cycle of turnover of construction and demolition waste, methods for improvement of the material and transport component of the construction waste management system. Performed analysis showed that mechanism of management of construction waste allows to increase efficiency and environmental safety of this branch and regions.

Comparative environmental evaluation of construction waste management through different waste sorting systems in Hong Kong

This study aimed to compare the environmental performance of building construction waste management (CWM) systems in Hong Kong. Life cycle assessment (LCA) approach was applied to evaluate the performance of CWM systems holistically based on primary data collected from two real building construction sites and secondary data obtained from the literature. Different waste recovery rates were applied based on compositions and material flow to assess the influence on the environmental performance of CWM systems. The system boundary includes all stages of the life cycle of building construction waste (including transportation, sorting, public fill or landfill disposal, recovery and reuse, and transformation and valorization into secondary products). A substitutional LCA approach was applied for capturing the environmental gains due to the utilizations of recovered materials. The results showed that the CWM system by using off-site sorting and direct landfilling resulted in significant environmental impacts. However, a considerable net environmental benefit was observed through an on-site sorting system. For example, about 18–30kg CO2 eq. greenhouse gases (GHGs) emission were induced for managing 1 t of construction waste through off-site sorting and direct landfilling, whereas significant GHGs emission could be potentially avoided (considered as a credit −126 to −182kg CO2 eq.) for an on-site sorting system due to the higher recycling potential. Although the environmental benefits mainly depend on the waste compositions and their sortability, the analysis conducted in this study can serve as guidelines to design an effective and resource-efficient building CWM system.

Methods of Creation Basis Decisions of Management System Construction Waste Recycling

Рresents a methodology using which you can simulate evaluate and predict the construction waste management system for different regions

Simulating effects of management measures on the improvement of the environmental performance of construction waste management

Construction waste management (CWM) can affect society from an economic perspective, a social perspective and an environmental perspective. It is found from existing literature that scant attention has been paid to take account of the dynamics nature of the CWM system and interactions among major variables in the system when evaluating its environmental performance. Therefore, in order to fill the research gap, we develop a model for evaluating the environmental performance of CWM by using a system dynamics approach; particular focus is given to the dynamic interrelations among major variables in the CWM system and how the dynamics interactions can influence the environmental performance of CWM. The application of the proposed model is demonstrated based on a real case from the construction industry of China. The simulation results not only provide valuable information on how to improve the environmental performance of CWM in the studied project, but also help build confidence in the dynamic model in general so that it can be adopted to simulate, evaluate, and subsequently improve the environmental performance of CWM in construction projects.

Proposal of a New Construction Waste Management System Combining with Electronic Manifest and Global Positioning System (GPS)

This study proposes a new Construction Waste Management System (CWMS) for the promotion of appropriate management of construction waste and its demolition materials. CWMS mainly consists of two parts; the Electronic Manifest System (EMS) for the construction waste, instead of the conventional paper manifest system, and the Vehicle Tracking System (VTS), based on the global positioning system (GPS). VTS, tightly combining with EMS, could easily pursuit the construction waste from a generation point to a treatment and/or disposal site. This paper describes the principle of CWMS and proposes some improvements of actual manifest system, such as weight control by activation of the load scale facility, already installed in each dump car.