scholarly journals The Development of a Decision Support Model for Eco-Friendly Material Selection in Vietnam

2020 ◽  
Vol 12 (7) ◽  
pp. 2769 ◽  
Author(s):  
Anh-Duc Pham ◽  
Quang Trung Nguyen ◽  
Duc Long Luong ◽  
Quynh Chau Truong

In recent years, the awareness of sustainable construction has increasingly risen in countries around the world, with the main goal being to avoid depleting energy resources and raw materials and to greatly reduce carbon emissions. Therefore, the selection of eco-friendly building materials becomes a difficult task and choosing the best construction strategy is a complicated process. Most of the studies of the building material selection often focus on optimizing material-related green building scores with budget constraints based on the environmental impacts of those materials. However, these studies do not pay attention to the impact of sustainable materials on two important aspects of a project: The initial investment cost and the total labor-working days. Hence, this study developed a model that optimizes a material mix for buildings considering the building budget, total labor-working days, and material-related green building scores. A case study in Vietnam was conducted to illustrate the effectiveness of the proposed model. This proposed model provides a guidance for decision-makers in selecting approximate materials for buildings toward sustainability.

Author(s):  
D. P. Kothari

The green building design aims to minimize the need for the non-renewable energy of these resources, optimize their sustainability and maximize their conservation, recycling and usage. The use of effective building materials and construction techniques is maximized. Architectural bioclimatic technology will also optimize on-site usage of sources and sinks. It requires only minimum electricity to fuel itself and efficient appliances to meet its lighting, air-conditioning and other needs. Green buildings architecture optimizes the use of renewable energies and efficient waste and water management methods to create practical and hygienic working conditions for indoor environments. Materials such as chemical, physical and mechanical material properties and an appropriate specification are the fundamental elements of construction design and responsible for the mechanical strength of the design. The construction of green buildings is also the first step in choosing and utilizing eco-friendly materials with or better characteristics than traditional building materials. Based on the practical, technical and financial requirements, construction materials are usually selected. But, given that sustainable development has been a core issue in recent decades, building industry that is directly or indirectly responsible for a substantial share of annual environmental destruction, by pursuing environmentally sound constructions and buildings should take responsibility for contributing to sustainable growth. The quickest way for manufacturers to start integrating environmental design practices into buildings would be the diligent procurement of eco-friendly sustainable construction materials, including options for new material uses, recycling and reusing, organic product creation and green resource use. This paper aims to show how green building materials will help reduce the impact on the atmosphere and create a cleaner building that can be healthy for the occupant or our environment. In the sustainable progress of a nation, the choice of building materials that have reduced environmental burdens is helpful.


2021 ◽  
Vol 17 (2) ◽  
pp. 145-157
Author(s):  
Deni Setiawan ◽  
Michael Kristianto Marbun

Implementation of "Green Building" in construction is the responsibility of all parties involved in the construction project. The Office of the Federal Environment Executive (OFEE) defines green buildings or green buildings as “the practice of increasing the efficiency by which buildings and their sites use energy, air, and materials, and reducing the impact of buildings on health and the environment, through better siting, design work. construction, operation and removal - maintenance of the complete building life cycle. (Kubba, 2017). At the planning and implementation stage of a construction project the selection of building materials or materials must be precise but also efficient. The concept of eco-efficiency was introduced in 1991 by the World Business Council for Sustainable Development - WBCSD and includes “the development of competitively priced products and services that meet the needs of the quality of human life, while progressively reducing impact on the environment and consumption of raw materials throughout the life cycle accordingly. with the capacity that is on planet earth. "This concept means producing more products with less resources and less waste, and therefore this concept has less impact on the environment. Then it is necessary to assess all the environmental impacts caused by the extraction of raw materials from the start of the material being given (cradle) to the end of its service life (tomb). The research objective is to develop environmentally friendly materials for problem solving materials, electricity and plumbing. The results of the analysis show that the mechanical, electrical, and piping materials used in the Maranatha Sport Center project have not met the 7 overall environmentally friendly criteria for the material-life-span stage, however, each material used has the main green criteria that have been self-declared by each. -Each material manufacturer.


2021 ◽  
Vol 13 (18) ◽  
pp. 10438
Author(s):  
Seyed Morteza Hatefi ◽  
Hamideh Asadi ◽  
Gholamreza Shams ◽  
Jolanta Tamošaitienė ◽  
Zenonas Turskis

The construction industry is a vital part of the modern economic system. Construction work often has significant negative impacts on the environment and sustainable economic development, such as degradation of the environment, depletion of resources, and waste generation. Therefore, environmental concerns must be taken into account when evaluating and making decisions in the construction industry. In this regard, sustainable construction is considered as the best way to avoid resource depletion and address environmental concerns. Selection of sustainable building materials is an important strategy in sustainable construction that plays an important role in the design and construction phase of buildings. The assessment of experts is one of the most important steps in the material selection process, and their subjective judgment can lead to unpredictable uncertainty. The existing methods cannot effectively demonstrate and address uncertainty. This paper proposes an integrated Dempster-Shafer (DS) theory of evidence and the ARAS method for selecting sustainable materials under uncertainty. The Dempster-Shafer Evidence Theory is a relatively new and appropriate tool for substantiating decisions when information is nonspecific, ambiguous, or conflicting. The Additive Ratio Assessment (ARAS) method has many advantages to deal with MCDM problems with non-commensurable and even conflicting criteria and to obtain the priority of alternatives based on the utility function. The proposed method converts experts’ opinions into the basic probability assignments for real alternatives, which are suitable for DS evidence theory. It uses the ARAS method to obtain final estimation results. Finally, a real case study identifying the priority of using five possible alternative building materials demonstrates the usefulness of the proposed approach in addressing the challenges of sustainable construction. Four main criteria including economic, social, environmental, and technical criteria and 25 sub-criteria were considered for the selection of sustainable materials. The specific case study using the proposed method reveals that the weight of economic, socio-cultural, environmental, and technical criteria are equal to 0.327, 0.209, 0.241, and 0.221, respectively. Based on these results, economic and environmental criteria are determined as the most important criteria. The results of applying the proposed method reveal that aluminum siding with a final score of 0.538, clay brick with a score of 0.494, and stone façade with a final score of 0.482 are determined as the best alternatives in terms of sustainability.


2013 ◽  
Vol 368-370 ◽  
pp. 1103-1106
Author(s):  
Hai Long Wu ◽  
Bing Zhang Huang ◽  
Bang Biao Huang ◽  
Ji Zhen Zhu ◽  
Xi Qiang Li ◽  
...  

In order to achieve green building materials, energy conservation, waste reuse purposes. Use city sewage sludge as part of the raw materials for production of shale brick is studied by experiments adopted the different mixing ratio, find matching and the relationship between the compressive strength. Experimental results show that the shale powder to add quality percentage is 40% of dry sludge, formed a burning brick, brick of various performance accord with national standards, not only can save coal and mineral resources, improve the heat insulation brick, but also a lot of recycling of utilization of sludge.


2016 ◽  
Vol 11 (2) ◽  
pp. 116-130 ◽  
Author(s):  
Karen Kensek ◽  
Ye Ding ◽  
Travis Longcore

Green buildings should respect nature and endeavor to mitigate harmful effects to the environment and occupants. This is often interpreted as creating sustainable sites, consuming less energy and water, reusing materials, and providing excellent indoor environmental quality. Environmentally friendly buildings should also consider literally the impact that they have on birds, millions of them. A major factor in bird collisions with buildings is the choice of building materials. These choices are usually made by the architect who may not be aware of the issue or may be looking for guidance from certification programs such as LEED. As a proof of concept for an educational tool, we developed a software-assisted approach to characterize whether a proposed building design would earn a point for the LEED Pilot Credit 55: Avoiding Bird Collisions. Using the visual programming language Dynamo with the common building information modeling software Revit, we automated the assessment of designs. The approach depends on parameters that incorporate assessments of bird threat for façade materials, analyzes building geometry relative to materials, and processes user input on building operation to produce the assessment.


Land ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 152
Author(s):  
Lawrence Fulton ◽  
Bradley Beauvais ◽  
Matthew Brooks ◽  
Scott Kruse ◽  
Kimberly Lee

Intelligent use of rural residential land and sustainable construction is inexorably linked to cost; however, options exist that are eco-friendly and have a positive return on investment. In 2011, a research residence was built to evaluate various land-use and sustainable components. This Texas house has subsequently been used for both residential and research purposes. The purpose of this case study was to evaluate break-even construction considerations, to assess environmental impacts, and to evaluate qualitatively efficacy of sustainable options incorporated in the research residence. Some of the specific components discussed are home site placement (directional positioning); materiel acquisition (transportation); wood product minimization; rainwater harvesting; wastewater management; grid-tied solar array power; electric car charging via a solar array; geothermal heating and cooling; insulation selection; windows, fixtures, and appliance selection; and on-demand electric water heaters for guest areas. This study seeks to identify the impact of proper land use and sustainable techniques on the environment and return-on-investment in rural areas. Break-even and 15-year Net Present Value (NPV) analysis at 3% and 5% cost of capital were used to evaluate traditional construction, partially sustainable construction, and fully sustainable construction options for the case study house, which was built sustainably. The additional cost of sustainable construction is estimated at $54,329. At 3%, the analysis suggests a 15-year NPV of $334,355 (traditional) versus $250,339 million (sustainable) for a difference of $84K. At 5% cost of capital, that difference falls to $63K. The total estimated annual difference in carbon emissions is 4.326 million g/CO2e for this research residence. The results indicate that good choices for quick return-on-investment in rural construction would be the use of engineered lumber, Icynene foam, and Energy Star windows and doors. Medium-term options include photovoltaic systems (PVS) capable of powering the home and an electric car. Sustainable construction options should positively affect the environment and the pocketbook. Regulations and code should require adoption of short-range, break-even sustainable solutions in residential construction.


2020 ◽  
Vol 7 (10) ◽  
pp. 201312
Author(s):  
Daniela Römer ◽  
Marcela I. Cosarinsky ◽  
Flavio Roces

Ants build complex nest structures by reacting to simple, local stimuli. While underground nests result from the space generated by digging, some leaf- and grass-cutting ants also construct conspicuous aboveground turrets around nest openings. We investigated whether the selection of specific building materials occurs during turret construction in Acromyrmex fracticornis grass-cutting ants, and asked whether single building decisions at the beginning can modify the final turret architecture. To quantify workers' material selection, the original nest turret was removed and a choice between two artificial building materials, thin and thick sticks, was offered for rebuilding. Workers preferred thick sticks at the very beginning of turret construction, showed varying preferences thereafter, and changed to prefer thin sticks for the upper, final part of the turret, indicating that they selected different building materials over time to create a stable structure. The impact of a single building choice on turret architecture was evaluated by placing artificial beams that divided a colony's nest entrance at the beginning of turret rebuilding. Splitting the nest entrance led to the self-organized construction of turrets with branched galleries ending in multiple openings, showing that the spatial location of a single building material can strongly influence turret morphology.


2020 ◽  
Vol 12 (2) ◽  
pp. 719
Author(s):  
Ali Amiri ◽  
Juudit Ottelin ◽  
Jaana Sorvari ◽  
Seppo Junnila

Buildings use 30–40% of all energy resources and are thus the main consumers in modern society. Moreover, buildings require a vast amount of different raw materials. During the last two decades, several green building certifications have been created in order to consider the social, economic, and environmental aspects of the sustainability of buildings. One of the most famous and widely used of these certifications is Leadership in Energy and Environmental Design (LEED). So far, the use of LEED has concentrated in the US and other developed countries. One reason that restricts the use of this point-based system certification in developing countries is the limited data about its costs. In this study, the extra cost of the certification process were evaluated, besides the changes needed in the design of the building to reach the points required by LEED. At the first stage, the number of points the case study earns in its current format (Scenario 1) were assessed, then the cost difference of getting either the Certified (Scenario 2) or Silver (Scenario 3) level LEED certification for the building was studied. It was found that besides some technical considerations, filling the criteria of the Certified and Silver level increases the total costs of construction by 3.4% and 5.9%, respectively. Further improvement of the building’s energy efficiency would enable the attainment of a higher-level certification. The results of the study could help to promote the use of green building certifications in Western Asia.


2013 ◽  
Vol 689 ◽  
pp. 398-402 ◽  
Author(s):  
Usman Aminu Umar ◽  
Hassan Tukur ◽  
Mohd. Faris Khamidi ◽  
Adam Umar Alkali

As education and concern pertaining to environmental and sustainability issues like implications of resources destruction, decrease in bio-diversity as well as climate change multiply, so has the need for housing developments that lead to less damaging effects on the environment, whilst enabling living standard to be sustained. Builders, developers and material providers have addressed this demand by creating approaches and technologies that minimize energy, water and main material consumption, decrease greenhouse gas emissions and sustain or enhance surrounding ecological systems and services. Several administration and non-governmental institutions in addition have aimed to change the sustainability of the building industry by developing green rating systems that can be used to evaluate the environmental performance of new and existing building. This paper discusses material resources criteria and the impact as a sustainable rating tool.


2014 ◽  
Vol 935 ◽  
pp. 27-33
Author(s):  
Mohammed Farouk El-Aby

Due to the current resource depletion rates, as well as the growing need toward energy and water efficiency, Governments and the private sector adopted the concept of the Green Building, given the fact that buildings are responsible for energy and raw materials on a large scale. That need is clearly manifested in the developing countries facing energy efficiency challenges. Hence, this research highlights the efforts of the governmental and the non-for-profit organizations; represented by Lebanese Ministry of Environment, Ministry of Energy and Water, Lebanon Green Building Council (LGBC) and funded by the International Finance Corporation of the World Bank. The research summarizes the opportunities and challenges of adopting this concept to the benefit of Lebanon and other countries undergoing the same circumstances and facing the same challenges. In the process of reaching a conclusion, the researcher adopted the analytical and the case study methods through two main axes. The former attends to the theoretical studies which include the definition, the principles, the benefits and the global and local rating system of the Green Building. The latter axis addresses the Lebanese experiment through the review of the Opportunities and the Challenges facing the Green Building in Lebanon, and the ARZ Building Rating System. It also illustrates and analyzes a pioneering project in Lebanon that employed the green building patterns, the Ammiq Eco-Restaurant in Bekaa region. The paper is concluded by a set of recommendations that can be the foundation for similar experiences aspiring for adopting the green building as a cornerstone in the arena of sustainable development.


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