scholarly journals The Case for Sustainable Concrete Waste Management in Qatar

2019 ◽  
Vol 5 (1) ◽  
pp. p1
Author(s):  
Soud Khalifa Al-Thani ◽  
Sungho Park
Keyword(s):  
Waste Management ◽  
Construction Industry ◽  
Construction Projects ◽  
Management Practices ◽  
Green Building ◽  
Waste Recycling ◽  
Current Status ◽  
Local Case ◽  
Concrete Production ◽  
Recycle And Reuse

The construction industry is a major generator of waste. There are many challenges associated with implementing sustainable methods to manage construction waste. While the construction industry in the State of Qatar has been adopting plenty of progressive practices, waste management, especially of concrete waste, has not advanced notably. In addition to the limited supply of limestone suitable for use as natural aggregate for concrete production in Qatar, the ability to recycle and reuse concrete waste is critical to reducing environmental impacts to meet national, regional and global environmental goals. Therefore, this research aims to identify the current status of concrete waste management practices in construction projects in Qatar exemplified by a local case-study project. Concrete waste was particularly monitored over the span of the construction stage of a large research and development facility in Qatar, benchmarking trends and practices on a certified “green” building. In response, this study addresses key challenges to concrete waste recycling and reuse to then recommend opportunities of advancements in local concrete waste management and reuse.

scholarly journals Strategies for Effective Waste Reduction and Management of Building Construction Projects in Highly Urbanized Cities—A Case Study of Hong Kong

Buildings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 214
Author(s):  
Ann T. W. Yu ◽  
Irene Wong ◽  
Zezhou Wu ◽  
Chi-Sun Poon
Keyword(s):  
Hong Kong ◽  
Waste Management ◽  
Construction Projects ◽  
Management Practices ◽  
Green Building ◽  
Waste Reduction ◽  
Government Support ◽  
Design Stage ◽  
Construction Waste ◽  
Waste Management Practices

Hong Kong is a densely populated city with high-rise developments, and as in other metropolitan cities, the amount of waste generated from construction projects in the city is increasing annually. The capacity of existing landfills is expected to be saturated by the 2020s. Construction waste management has been implemented for years but the performance is still not satisfactory. The aim of this research paper is to explore and formulate strategies and measures for effective construction waste management and reduction in highly urbanized cities such as Hong Kong. A desktop study on construction waste management practices was carried out for a preliminary understanding of the current situation in Hong Kong. Semistructured interviews and focus group meetings were further conducted to shed light on how to improve construction waste reduction and management in Hong Kong. The main contributions of this research study are the potential short-term, medium-term, and long-term strategies, which are related to the design stage, tender stage, construction stage, and government support. The five major strategies recommended are financial benefits to stakeholders, public policies in facilitating waste sorting, government supports for the green building industry, development of a mature recycling market, and education and research in construction waste minimization and management.

scholarly journals Assessing the role and use of recycled aggregates in the sustainable management of construction and demolition waste via a mini-review and a case study

2020 ◽  
Vol 38 (4) ◽  
pp. 460-471 ◽  
Author(s):  
John N. Hahladakis ◽  
Phil Purnell ◽  
Hareb Mohammed S.J. Aljabri
Keyword(s):  
Waste Management ◽  
Construction Projects ◽  
Industrial Development ◽  
Management Practices ◽  
The State ◽  
Construction And Demolition Waste ◽  
Recycled Aggregates ◽  
Current Status ◽  
Demolition Waste ◽  
Using Data

Rapid industrial development, mega construction projects and increased immigration are some of the reasons that the State of Qatar has recently generated an unprecedented amount of construction and demolition (C&D) waste in the country. The State is racing towards the Fédération Internationale de Football Association World Cup 2022, a fact that requires additional construction, for which it is expected to increase its rate of waste generation. Compared to other regions, there are relatively few studies in the literature that report on the C&D waste management issues of Qatar. The present work begins to address this gap by providing insights into the current state of C&D waste management practices in Qatar and by providing a mini-review on the benefits of using recycled aggregates which have only recently been allowed locally by Qatar Construction Standards. A Strengths, Weaknesses, Opportunities, and Threats analysis has been implemented, using data and information from various sources including governmental reports, industries, local waste management companies, as well as reported interviews with relevant stakeholders. Finally, several strategies were proposed and developed that could potentially be implemented by stakeholders and decision-makers, so as to improve the current status by encouraging more sustainable and viable practices.

scholarly journals Discussion on the Application of New Photovoltaic Energy in Building Electrical Energy Saving

2020 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Qian Yang
Keyword(s):  
Energy Conservation ◽  
Construction Industry ◽  
Construction Projects ◽  
Negative Impact ◽  
Rapid Development ◽  
Social Economy ◽  
Green Building ◽  
Electrical Energy ◽  
New Energy

<p>With the rapid development of social economy, the demand for new energy is also increasing, and then the problem of large consumption also has a negative impact on the development of the construction industry. Under the concept of green building, the design and construction units pay more attention to energy conservation and environmental protection, so they actively use photovoltaic new energy in the field of electrical energy conservation of construction projects, so as to improve people's quality of life. Starting from the principles and characteristics of building electrical energy conservation, this paper discusses the methods of building electrical energy conservation, and analyzes how to use photovoltaic new energy in the field of building electrical energy conservation, hoping to better practice the concept of energy conservation.</p>

scholarly journals Building Information Modelling (BIM) in Managing Construction Claims: Now and Beyond – A Review (Jordan Perspective)

2020 ◽  
Vol 9 (7) ◽  
pp. 1099-1115
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Management Practices ◽  
Negative Impact ◽  
Cost Savings ◽  
Cycle Phase ◽  
Change Orders ◽  
Construction Claims ◽  
Building Information ◽  
Life Cycle Phase

As the intricacy of construction projects is amassed, prospects for tribulations are mounting, depicting negative impact on projects’ cost, time and excellence. Thus, eliciting claims that aredisruptive to projects, time consuming and exorbitant. BIM holds enormousprobable in prosperous claim management practices. The progression of BIM can enrich knowledge sharing for information of a building or facility. It forms a vitalbase for decision making throughout the life cycle phase from the conceptual design to demolition. BIM is also, a valuable multidisciplinary cohesive source of information technology that posts benefits and disputes in the construction industry. The main aspiration of this paper is to appraise how and to what magnitude BIM can help evading and plummeting claims in Jordan construction industry.The paper ran a literature review on recent research, industry reports, and other sources to seehow they identified claims, its classifications, benefits, impacts and challenges of BIM on construction projects.Also, the paper acknowledgedcontemporaneous challenges in the claims field and the construction industry as whole. The attained outcomes have shown that BIM overtakes traditional claim management practices in many aspects including recognizing and investigating claims, where the benefits are comprehended in time and cost savings, less change orders, less rework. Moreover, the information and knowledge management that BIM postulates can improve many aspects of claim management.

Analysing the benefits, techniques, tools and challenges of knowledge management practices in the Malaysian construction SMEs

2017 ◽  
Vol 15 (6) ◽  
pp. 803-825 ◽  
Author(s):  
Jeffrey Boon Hui Yap ◽  
Anna Lock
Keyword(s):  
Knowledge Management ◽  
Construction Industry ◽  
Construction Projects ◽  
Management Practices ◽  
Small And Medium Enterprises ◽  
Cultural Issue ◽  
Content Type ◽  
Klang Valley ◽  
Knowledge Management Practices ◽  
Company Identification

Purpose Knowledge management (KM) is the central know how for the construction industry. However, the delivery of construction projects is often plagued by schedule delays and cost overruns due to lack of working knowledge of project personnel. Hence, the need to appraise the practices of knowledge management in the construction industry has become all the more germane. This paper aims to determine the awareness of KM practices in Malaysia-based construction small and medium enterprises, and to investigate the benefits, tools and techniques, and challenges associated with knowledge management implementation so that effective measures can be devised to address them. Design/methodology/approach The research data were gathered using a structured questionnaire survey disseminated in the Klang Valley region in Malaysia. Responses were collected from 107 industry practitioners. The quantitative data are subjected to descriptive statistics, and the ranking with category of significance of the hypothesised variables is determined using the relative importance index (RII) technique. Findings The key benefits of KM practices are predominantly raising efficiency, quality, productivity and decision-making. The most preferred KM techniques are “face-to-face interaction”, “mentoring” and “documents and reports”. The highly significant tools are “groupware” and “telephone”. The major organisational issue hampering the implementation of knowledge management practices is “lack of motivation” while the critical cultural issue is relating to “bureaucracy and hierarchical”, and the vital people issue concerns “lack of trust”. Research limitations/implications The respondents were limited to only small and medium construction enterprises located in the Klang Valley region in Malaysia, which makes generalisation challenging. Practical implications KM provides not only a pragmatic but also a proactive approach to raising the competitive edge and capabilities of a construction company. Identification of the critical attributes of KM provides the basis for project managers in formulating KM strategies to enhance the chances of successful delivery of future projects. Originality/value The study contributes to the debate on the knowledge agenda in the construction industry, particularly from a fast developing economy’s perspective, where an effective KM can further contribute to realising a reasonable level of competitiveness operation.

Sustainable Solid Waste Management in Bangladesh

2020 ◽  
pp. 35-55
Author(s):  
Md. Ashikuzzaman ◽  
Md. Hasan Howlader
Keyword(s):  
Waste Management ◽  
Solid Waste ◽  
Management Practices ◽  
Solid Waste Management ◽  
Waste Recycling ◽  
Medical Waste ◽  
Community Based ◽  
Emerging Issues ◽  
Per Capita ◽  
Waste Management Practices

Solid waste management is a grave concern for Bangladesh as by 2025 waste generation per capita will be 0.75 kg/capita/day and total amount of waste will reach 21.07 million tons per year. This chapter attempts to uncover the facts regarding waste management along with the policies and regulations existing in Bangladesh by reviewing published secondary documents. The chapter also contains emerging issues of agricultural, industrial, hazardous, construction, and electronic generation and 3R practices in Bangladesh. Legal instruments for waste management in Bangladesh are also examined. It has been found that enforcing authorities lack the capacity to implement their strategies regarding 3R practices for waste management. Case studies about community-based approach, waste recycling sector, and medical waste management have been exemplified in this chapter. Finally, the authors apprised the issues and challenges of sustainable solid waste management practices and proposed the way forward for Bangladesh to have sustainable solid waste management.

scholarly journals DEVELOPMENT OF AN INTEGRATED SUSTAINABLE ELECTRONIC WASTE MANAGEMENT SYSTEM FOR HIGHER INSTITUTIONS IN RIVERS STATE

2020 ◽  
Vol 06 (12) ◽  
Author(s):  
AUDREY OPARA ◽  
Keyword(s):  
Waste Management ◽  
Management System ◽  
Management Practices ◽  
Electronic Waste ◽  
Waste Recycling ◽  
Source Reduction ◽  
Waste Management System ◽  
Environmentally Sound ◽  
Higher Institutions ◽  
Rivers State

High obsolescence rate and end-of-life of electronic equipment resulting in high generation of electronic waste remains the biggest challenge with use of ICT in higher institutions. This study evaluated and developed an environmentally sound E-waste management system for higher institutions in Rivers State. The study employed research surveys in data acquisition through questionnaires, interviews and observation. Hypotheses were postulated to test areas of interest. Study indicated that institutions generate a reasonably amount of electronic/ICT wastes that are poorly managed. Desktop computers, printers, laptops, UPSs, old CRT monitors, and printer cartridges are the majority generated and available E-waste in storage in these institutions. Results revealed that the level of awareness on hazardous nature of E-waste among the sampled population was significant. The level awareness on E-waste recycling among sampled population was also significant. There are no accurate records or inventory of ICT equipment procurement and E-waste generation and disposal in the institutions. Policies and programs on source reduction E-waste segregation and handling, facilities for E-waste recovery, recycling and reuse are practically not available in the institutions. The study concluded that there is no proper management and disposal of electronic/ICT waste in higher institutions in Rivers State. Significant numbers of respondents expressed the need for the institutions to establish an integrated electronic/ICT waste recycling center. An Integrated E-waste management system that will not only address the current poor E-waste management practices in the institutions but also achieve environmentally sound management of E-wastes in the institutions has been developed in the study.

scholarly journals DIRECTIONS OF LOGISTICS DEVELOPMENT AND ITS IMPACT ON RECYCLING OF WASTE IN THE CONSTRUCTION INDUSTRY

2021 ◽  
Vol 2 (162) ◽  
pp. 99-104
Author(s):  
R. Stepanov ◽  
V. Bredikhin ◽  
D. Domenuk
Keyword(s):  
Waste Management ◽  
Construction Industry ◽  
Reverse Logistics ◽  
Construction Projects ◽  
Economic Incentives ◽  
Economic Regulation ◽  
Urban Centers ◽  
Logistics System ◽  
Logistics Systems ◽  
Economic Parameters

The article considers the research of the process of supply of resources for construction taking into account the logistical needs of reversible logistics. The result will be the gradual formation of logistics systems in the construction industry, which should lead to the formation of a single logistics system of the construction industry. This will create a set of integration effects. First of all, to identify the main objectives of the logistics system in the construction industry as a whole, it is necessary to determine the basic economic parameters of each system participant, decompose the logistics system, and then determine the integrated economic characteristics of its activities. It is noted that the current level of logistics development and the growing specialization of its individual functional areas require a focus on the whole chain of causal relationships. Most logistics systems are focused on one direction of movement of inventory - from producer to end consumer. As a result, the process of decomposition of the logistics system of the construction industry according to the main economic parameters of operation was created. The current trends in logistics development that emerged during the pandemic have been identified. The general and basic concepts of waste management of construction companies are considered. The scheme of the waste management hierarchy is given. It is established that the main principles of economic regulation in the construction industry of waste management are to reduce the amount of waste and involve them in economic turnover; payment for waste disposal; economic incentives in the field of waste management. The main problems of reverse logistics facing the business and the possibility of solving them through the introduction of a system of reverse logistics or recycling are identified. In conclusion, the introduction of integrated logistics systems was proposed, which is especially effective in large construction projects located in urban centers, where massive material flows must be managed.

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