scholarly journals REVIEW ON WASTE MANAGEMENT SYSTEMS IN THE HONG KONG CONSTRUCTION INDUSTRY: USE OF SPECTRAL AND BISPECTRAL METHODS / ATLIEKŲ TVARKYMO SISTEMŲ HONKONGO STATYBŲ SEKTORIUJE APŽVALGA: SPEKTRINIO IR BISPEKTRINIO METODŲ TAIKYMAS

2012 ◽  
Vol 18 (1) ◽  
pp. 14-23 ◽  
Author(s):  
Vivian W. Y. Tam ◽  
Khoa N. Le ◽  
S. X. Zeng
Keyword(s):  
Hong Kong ◽  
Waste Management ◽  
Construction Industry ◽  
Construction Projects ◽  
Power Spectra ◽  
Management Systems ◽  
Structured Interviews ◽  
Construction Waste ◽  
Building Components ◽  
Concrete Recycling

The Hong Kong government has implemented various measures to reduce waste, including a waste disposal ordinance, a green manager scheme, a waste reduction framework plan, a pilot concrete recycling plant, waste management systems and a landfill charging scheme. However, there are difficulties in implementing the waste management systems for contractors. This paper examines the existing implementation of waste management systems in the Hong Kong construction industry. Major sources of construction waste, awareness to install environment-friendly activities, benefits, difficulties and recommendations in the implementation of waste management systems are discussed. Questionnaire survey and structured interviews are conducted. Power spectra and bispectra of the survey data are introduced to assess the implementation of the existing waste management systems. It is found that formwork and temporary hoardings are the major sources of construction waste. Improving environmental performance is ranked as the least project scope for construction projects. “Propose methods for reducing waste” is the major benefit gained. However, “Lack of well-known effective waste management methods” is the major difficulty encountered by organisations. “Use of metal formwork”, “Use of prefabricated building components” and “Use of non-timber hoarding” are the recommended methods to improve the existing implementation of waste management systems. Santrauka Honkongo valdžia įdiegė įvairių priemonių atliekų kiekiui mažinti, įskaitant atliekų šalinimo potvarkį, žaliojo tvarkytojo planą, bendrąjį atliekų mažinimo planą, bandomąją betono perdirbimo gamyklą, atliekų tvarkymo sistemas ir sąvartyno mokesčių planą. Tačiau diegiant atliekų tvarkymo sistemas rangovams kyla sunkumų. Šiame darbe nagrinėjamos Honkongo statybų sektoriuje jau diegiamos atliekų tvarkymo sistemos. Aptariami pagrindiniai statybinių atliekų šaltiniai, žinios apie galimą aplinkai nekenksmingą veiklą, taip pat atliekų tvarkymo sistemų diegimo nauda, sunkumai ir rekomendacijos. Atliekamos anketinės apklausos ir nustatytos struktūros pokalbiai. Pasitelkus per apklausas surinktų duomenų galios spektrus ir bispektrus, įvertinamas esamų atliekų tvarkymo sistemų diegimas. Nustatoma, kad pagrindiniai statybinių atliekų šaltiniai – klojiniai ir laikinos tvoros. Aplinkosaugos charakteristikų gerinimas statybos projektuose laikomas mažiausia projekto dalimi. Pagrindinė gauta nauda – siūlomi atliekų kiekio mažinimo metodai. Tačiau didžiausias organizacijoms kylantis sunkumas – žinomų efektyvių atliekų tvarkymo metodų stoka. Gerinant šiuo metu diegiamas atliekų tvarkymo sistemas, rekomenduojama taikyti tokius metodus: metalinius klojinius, surenkamuosius statinių elementus ir laikinas tvoras ne iš medžio.

scholarly journals Challenges Towards Reducing Illegal Dumping Activities in the Construction Industry

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Mohd Hilmi Izwan Abd Rahim ◽  
◽  
Sulzakimin Mohamed ◽  
Narimah Kasim ◽  
Mazianah Rahmat ◽  
...  
Keyword(s):  
Developing Countries ◽  
Content Analysis ◽  
Waste Management ◽  
Construction Industry ◽  
Construction Projects ◽  
Negative Impact ◽  
Structured Interviews ◽  
Construction Waste ◽  
Illegal Dumping

This nowadays an increasing number of construction projects in Malaysia have contributed to the production of construction waste which has had a negative impact on the environment, especially through illegal dumping. The increasing number of illegal dumping activities is a sign that construction waste management needs to be examined. To date, a comprehensive criterion for construction waste management, in developing countries is still not clearly defined. Therefore, the objectives of this paper are to investigate current illegal dumping activities, and identify the challenges towards reducing illegal dumping activities in the Malaysian construction industry. Hence, this research conducted interviews with 20 expert stakeholders related to construction waste management in order to scrutinise illegal dumping activities in Malaysia. The data from these semi-structured interviews were analysed by content analysis. The findings are used to determine the current challenges for reducing illegal dumping activities in the Malaysian construction industry. The elements in the current findings are potentially to improve construction waste management in order to archive the proper construction waste management. Finally, this findings will help to identify strategies to reduce illegal dumping activities and to enhance challenges towards reducing illegal dumping activities in the Malaysian construction industry.

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 ROLE OF ORGANIZATIONAL STRUCTURE ON CONSTRUCTION WASTE MANAGEMENT AMONG KUANTAN MALAYSIAN CONSTRUCTION INDUSTRIES

2021 ◽  
Vol 5 (3) ◽  
pp. 57-73
Author(s):  
F. Kamarosisam ◽  
A. Q. Adeleke ◽  
T.T. Taiwo
Keyword(s):  
Waste Management ◽  
Construction Industry ◽  
Construction Projects ◽  
Environment And Public Health ◽  
Negative Effects ◽  
Building Projects ◽  
Construction Waste ◽  
Construction Companies ◽  
The Relationship

The construction industry is one of the sectors contributing to the Malaysian economy and is regarded as an important component of the Malaysian economy. At the same time, as the number of building projects rises, the amount of waste created by building projects also increases, which also has many negative effects on the environment and public health. To reduce the amount of waste created by construction projects, waste must be properly handled and effective practices in the management of construction waste must be implemented in all construction industries. This research paper aims to answer these problems above in order to: 1) to investigate the relationship between formalization structure and construction waste management in Pahang construction industries; and 2) to investigate the relationship between centralization structure and construction waste management in Pahang construction industries. Data were obtained from 107 respondents among construction companies in Pahang. The PLS-SEM technique was used to test both the measurement and structural models in this analysis. The outcome shows that there is an important connection between the formalization structure and the management of construction waste among the construction companies operating in Pahang. The structure of centralization and waste management for construction was also found to be positively associated in this study.

scholarly journals A Project Life-Cycle Readiness Approach to Manage Construction Waste in Jordan

2021 ◽  
Vol 21 (3) ◽  
Author(s):  
Saad Zighan ◽  
Moheeb Abualqumboz
Keyword(s):  
Waste Management ◽  
Construction Projects ◽  
Practical Implication ◽  
Management Strategies ◽  
Holistic Approach ◽  
Structured Interviews ◽  
Construction Waste ◽  
Early Stages ◽  
Project Construction ◽  
Project Life

The construction industry is well-known for generating the largest amount of waste amongst other industries, which significantly pollutes the environment. This study, therefore, examines the causes and sources of waste in construction projects, considering activities, inputs, and outputs of each phase of the construction projects’ lifecycle (i.e., concept, definition, deployment, and transition). Thirty semi-structured interviews were conducted with professionals in construction projects in Jordan, including architects, contractors, and project administrators. The findings reveal that waste resulting from construction projects passes across several organized operations from generation to final disposal. Furthermore, waste is generated in small amounts at the early stages of the project construction but grows as the project progresses towards the end. This paper’s key contribution is to supplement the literature on waste management solutions by providing a holistic approach to tackling waste at its root by including waste management strategies across the project lifecycle phases, not only during the construction phase. This is done with a management readiness view to develop a suitable strategy for construction waste minimization and improve the management of construction projects. This study’s practical implication is providing a holistic waste management framework for practitioners to adopt in the early stages of the project.

scholarly journals CONTRACTUAL OBLIGATIONS ANALYSIS FOR CONSTRUCTION WASTE MANAGEMENT IN CANADA

2015 ◽  
Vol 21 (7) ◽  
pp. 866-880 ◽  
Author(s):  
Daylath Mendis ◽  
Kasun N. Hewage ◽  
Joanna Wrzesniewski
Keyword(s):  
Quality Control ◽  
Waste Management ◽  
Construction Industry ◽  
Construction Projects ◽  
Waste Generation ◽  
Construction Waste ◽  
Expert Opinions ◽  
Field Quality ◽  
Contractual Agreements ◽  
Contractual Obligations

Construction industry creates a massive amount of waste, which typically ends up in landfills. Canadian construction industry represents 30% of the total municipal solid waste deposited in landfills. Construction and demolition (C&D) waste has created negative socioeconomic and environmental impacts including contaminating ground water, emitting greenhouse gases, and adding more waste to scarce landfills. Literature is cited rework/waste generation due to ambiguity/errors in construction contract documents. Exculpatory clauses in contract documents are included in contractual agreements to prevent contractor claims, which often cause rework. After an extensive contract documents review, these clauses were categorized in to eight major areas. This paper (1) analyses expert opinions on pre-identified contractual clauses; and (2) introduces recommendations to minimize rework and waste in construction projects. It was found that the clauses related to quality, workmanship, and field quality control/inspection have the most potential to generate construction waste.

Reduce, Reuse, Recycle and Recovery in Sustainable Construction Waste Management

2012 ◽  
Vol 446-449 ◽  
pp. 937-944 ◽  
Author(s):  
M.A Kazerooni Sadi ◽  
Arham Abdullah ◽  
Masoud Navazandeh Sajoudi ◽  
M.F.M. Kamal ◽  
Fatemeh Torshizi ◽  
...  
Keyword(s):  
Waste Management ◽  
Construction Industry ◽  
Raw Materials ◽  
Waste Minimization ◽  
Sustainable Construction ◽  
Construction Waste ◽  
Management Processes ◽  
Waste Minimisation ◽  
Minimization Technique ◽  
Local Construction

The construction industry consumes a substantial amount of raw materials in its processes and the output is obviously the product and most importantly the waste material. Other than that, the construction industry is well known as one of the worst environmental polluters. This study is to determine the use of waste minimisation technique in creating sustainable waste management in order to identify the technique which has the most capabilities to reduce on-site waste. The objective of this study is to assess the waste minimization techniques taken from the 4R concept (which includes reduce, reuse, recycle and recovery techniques) in minimizing the waste in construction waste management. The most used waste minimization technique found in the 4R concept would be waste reduction. This shows that the local construction industry has the knowledge necessary to plan out the waste management processes but the implementation is still far from satisfying. Additionally, the findings reveal that because the industry is profit-driven, construction practitioners are motivated by profit to adapt to this techniques.

scholarly journals Quantity Surveyors’ Response to the COVID-19 Outbreak: A Mixed Method Approach

2021 ◽  
Vol 7 (2) ◽  
pp. 177
Author(s):  
Seng Hansen ◽  
Susy F Rostiyanti ◽  
Rizaldi Rizaldi ◽  
Clara Andjarwati
Keyword(s):  
Construction Industry ◽  
Mixed Method ◽  
Construction Projects ◽  
Work Culture ◽  
Structured Interviews ◽  
Mixed Method Approach ◽  
Professional Activities ◽  
Project Sustainability ◽  
Project Objectives ◽  
Method Approach

The COVID-19 outbreak began at the end of 2019, and has evolved to a pandemic threatening various industries’ sustainability. Decisive actions have been taken to tackle the pandemic’s spread, however, various impacts continue to be felt by many industries, including the construction industry. This paper therefore focuses on the COVID-19 outbreak’s impact on Quantity Surveyors’ (QS) construction projects and activities, as a key profession in the industry. A mixed method approach, questionnaire survey followed by expert interviews, was adopted. Subsequently, 199 valid responses for analysis were obtained from the questionnaire distribution, using descriptive statistics and Significance Index. Furthermore, qualitative data were acquired through semi-structured interviews with five experts, and analyzed using a structured thematic analysis. According to the results, 56.78% of respondents experienced project slowdowns, 13.57% experienced project suspensions or terminations, and 12.56% experienced cost overruns. Most respondents acknowledged the pandemic had present changes to projects (84.92%), in the form of changes in organization structure, work culture, technological application, and project objectives. Meanwhile, the Significance Index has successfully established an 11-factors ranking, regarding the pandemic’s impact on QS activities, with impact on the overall project completion as the most profound impact followed by impacts on project scheduling, supply chain, tendering, cost controlling, and claim management. This study’s qualitative and quantitative findings tend to be in accordance, thus, providing some fundamental insights regarding the COVID-19 outbreak’s impact on the construction industry, including direct impacts on project sustainability, technology adoption, and project resiliency issues. In addition, this study also contributes to scientific knowledge by discussing the issues and trends of work culture changes in QS professional activities.

scholarly journals Main Challenges to Concrete Recycling in Practice

2021 ◽  
Vol 13 (19) ◽  
pp. 11077
Author(s):  
Abdulmalek K. Badraddin ◽  
Rahimi A. Rahman ◽  
Saud Almutairi ◽  
Muneera Esa
Keyword(s):  
Construction Projects ◽  
Low Cost ◽  
Transportation Cost ◽  
Recycled Concrete ◽  
Structured Interviews ◽  
Project Cost ◽  
Main Challenge ◽  
Small Medium Enterprises ◽  
National Programs ◽  
Concrete Recycling

While concrete recycling is crucial to protecting the environment, its implementation in practice is low in many countries. This study aims to highlight challenges to concrete recycling. To achieve that aim, the study objectives are (1) to identify the main challenges to concrete recycling in construction projects; (2) to compare the main challenges between small–medium enterprises (SMEs) and large enterprises (LEs); and (3) to determine the underlying groups among the main challenges. Potential challenges were identified through a systematic literature review of journal articles and semi-structured interviews with fifteen industry practitioners. Then, the identified challenges were inserted into a questionnaire survey and distributed to industry practitioners. Eighty-nine valid responses were collected and analyzed using the mean score ranking, normalization, agreement analysis, and factor analysis techniques. The analyses show thirteen main challenges to concrete recycling. The main challenges include increased project duration, lack of national programs, lack of comprehensive rules and regulations, increased project cost, low demand for recycled concrete, low cost-effectiveness of concrete recycling, and increased transportation cost. However, there is no consensus on the criticality between SMEs and LEs. For example, increased project cost is the main challenge for SMEs but is only middlingly ranked for LEs. Finally, the main challenges can be categorized into three interrelated groups: people and technical, legal and environmental, and economic challenges. This study contributes to the literature by analyzing challenges that hinder concrete recycling in practice. The findings allow researchers and practitioners to develop strategies to reduce concrete recycling rejection.

scholarly journals Evaluation of Rules and regulation of Construction and Demolition Waste Management (CDWM) in India

2019 ◽  
Vol 8 (2S11) ◽  
pp. 2642-2644
Keyword(s):  
Environmental Impact ◽  
Waste Management ◽  
Construction Industry ◽  
Construction And Demolition Waste ◽  
Construction Sites ◽  
Demolition Waste ◽  
Construction Waste

The rules and regulations on waste management in the construction and demolition sector are analyzed corresponding to the present scenario of C&DW in India. C&D waste from construction sites has emerged as a significant threat to India because of its severe footprint on the environment. Vast quantities of construction waste will have unfavorable consequences on the surroundings if they are not properly managed. Therefore it is necessary to manage the development of C&DW by the experts within the construction industry. The approach represented is specialized in rules and regulations on waste management so that the environmental impact of construction activities can be minimized.

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