Estimating the Generation of Construction and Demolition Waste by Using System Dynamics: A Proposed Model

2010 ◽  
Author(s):  
Gui Ye ◽  
Hongping Yuan ◽  
Hongxia Wang
Keyword(s):  
System Dynamics ◽  
Construction And Demolition Waste ◽  
Demolition Waste ◽  
Proposed Model

scholarly journals Multiobjective Mathematical Programming Model for the Optimization of End-of-Life Buildings’ Deconstruction and Demolition Processes

2019 ◽  
Vol 11 (5) ◽  
pp. 1426 ◽  
Author(s):  
Dimitrios Aidonis
Keyword(s):  
End Of Life ◽  
Programming Model ◽  
Construction And Demolition Waste ◽  
Demolition Waste ◽  
Environmental Criteria ◽  
Proposed Model ◽  
Weighted Optimization ◽  
Multiobjective Mathematical Programming ◽  
Decision Making Model ◽  
Selection Of

Nowadays, construction and demolition waste management has become a critical process for the construction industry, as the specific waste stream poses important environmental issues and challenges. In the case of dismantling end-of-life buildings, the selection of the appropriate technique between deconstruction and conventional demolition is a critical decision affecting the total volume and type of produced waste. Toward this effect, in this paper, a novel decision-making model for the optimization of end-of-life buildings’ deconstruction and demolition processes is proposed. The objective of the proposed model is the simultaneous and weighted optimization of the total cost and time for the completion of the deconstruction and demolition processes, taking into consideration economic, legislative, and environmental criteria. Finally, a demonstration of the application of the proposed model is presented via two specific case studies and by discussing a few interesting managerial insights.

Using System Dynamics Method to Manage Construction and Demolition Waste

2014 ◽  
Vol 3 (4) ◽  
pp. 65-86 ◽  
Author(s):  
Fardin Azhari ◽  
Farshid Abdi ◽  
Amir abbas Shojaie
Keyword(s):  
Waste Management ◽  
System Dynamics ◽  
Management System ◽  
Unit Cost ◽  
Waste Recycling ◽  
Construction And Demolition Waste ◽  
Flow Diagram ◽  
Main Question ◽  
Demolition Waste ◽  
Waste Management System

During last few decades, construction and demolition waste has attracted great attention from practitioners and researchers, as well as governments in all over the world. It's obvious that construction and demolition waste and its control is very important in many aspects. In other hand, system dynamics is an empirical tool and waste management system is a dynamic system that needs to be studied and analyzed dynamically so that many misconceptions and problems in this area to be avoided. The main question is how we can manage and control waste management system to have a less amount of negative impacts on the environment and society. In order to answer this main question, this paper tries to represent a conceptual model called “cause and effect diagram” to have a general and typical understanding of waste management system especially in Ardabil city. Next, it represents Stock-Flow diagram that has capability of running in computer for further analyzing. Then, it simulates the model by POWERSIM software to analyze and optimize the dynamic model. The study indicated that increasing values of the variables including fines for illegal dumping, unit cost of landfilling, unit cost of collecting, unit cost of transportation and also developing waste management sites has implications of a low illegal waste dumping and a high amount of waste recycling and reuse.

THE DEVELOPMENT OF THE MATHEMATICAL MODEL OF PREDICTING THE INDICATORS OF ACCREDITATION OF TECHNICAL UNIVERSITIES IN THE RUSSIAN FEDERATION

2017 ◽  
pp. 27-38
Author(s):  
Olga Mikhaylovna Tikhonova ◽  
Alexander Fedorovich Rezchikov ◽  
Vladimir Andreevich Ivashchenko ◽  
Vadim Alekseevich Kushnikov
Keyword(s):  
Mathematical Model ◽  
System Dynamics ◽  
Regression Model ◽  
Oriented Graph ◽  
Real Data ◽  
Educational Process ◽  
Proposed Model ◽  
Linear Differential ◽  
The University ◽  
The Mathematical Model

The paper presents the system of predicting the indicators of accreditation of technical universities based on J. Forrester mechanism of system dynamics. According to analysis of cause-and-effect relationships between selected variables of the system (indicators of accreditation of the university) there was built the oriented graph. The complex of mathematical models developed to control the quality of training engineers in Russian higher educational institutions is based on this graph. The article presents an algorithm for constructing a model using one of the simulated variables as an example. The model is a system of non-linear differential equations, the modelling characteristics of the educational process being determined according to the solution of this system. The proposed algorithm for calculating these indicators is based on the system dynamics model and the regression model. The mathematical model is constructed on the basis of the model of system dynamics, which is further tested for compliance with real data using the regression model. The regression model is built on the available statistical data accumulated during the period of the university's work. The proposed approach is aimed at solving complex problems of managing the educational process in universities. The structure of the proposed model repeats the structure of cause-effect relationships in the system, and also provides the person responsible for managing quality control with the ability to quickly and adequately assess the performance of the system.

A culture-based solution for construction and demolition waste management in Sri Lanka: a literature review

2019 ◽  
Author(s):  
A.P.K.D. Mendis ◽  
◽  
A. Samaraweera ◽  
D.M.G.B.T. Kumarasiri ◽  
D. Rajini ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Literature Review ◽  
Waste Management ◽  
Construction And Demolition Waste ◽  
Demolition Waste

CONCRETO PERMEÁVEL COM AGREGADO DA RECICLAGEM DE RESÍDUOS DA CONSTRUÇÃO E DEMOLIÇÃO: REVISÃO BIBLIOGRÁFICA / PERMEABLE CONCRETE WITH AGGREGATE FROM CONSTRUCTION AND DEMOLITION WASTE RECYCLING: LITERATURE REVIEW

2020 ◽  
Vol 6 (9) ◽  
pp. 73169-73180
Author(s):  
Kelly Patrícia Torres Vieira Brasileiro ◽  
Bacus de Oliveira Nahime ◽  
Michell Macedo Alves ◽  
Pâmela Millena Kunan ◽  
Vitor Alvares ◽  
...  
Keyword(s):  
Literature Review ◽  
Waste Recycling ◽  
Construction And Demolition Waste ◽  
Demolition Waste
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