A hybrid life cycle assessment of embodied energy and carbon emissions from conventional and industrialised building systems in Malaysia

Omar, Wan Mohd Sabki Wan

doi:10.1016/j.enbuild.2018.02.045

Cited by 48 publications

(13 citation statements)

References 65 publications

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“…These benefits provide an explanation for the increased interest in PC technology in numerous developed and developing countries such as Singapore (Hwang et al. , 2018), Malaysia (Wan Omar, 2018), the UK (Duncheva and Bradley, 2019), the USA (Razkenari et al. , 2020), Australia (Sahin et al.…”

Section: Introductionmentioning

confidence: 99%

“…As an innovative construction method, prefabricated construction (PC) changes the steps, scopes and interfaces of conventional construction (Luo et al, 2015), which entail several benefits such as reduction of resource depletion (Cao et al, 2015a, b), a decrease of energy consumption (Hong et al, 2016), less environmental emissions (Teng et al, 2018), improved construction safety and quality (Li et al, 2011) and increased productivity (Shahpari et al, 2020). These benefits provide an explanation for the increased interest in PC technology in numerous developed and developing countries such as Singapore (Hwang et al, 2018), Malaysia (Wan Omar, 2018), the UK (Duncheva and Bradley, 2019), the USA (Razkenari et al, 2020), Australia (Sahin et al, 2018), Japan (Yashiro, 2014), Korea (Jeong et al, 2017) and China (Li et al, 2020). Researchers generally agree that PC technology is a green initiative that can improve both the performance and the image of the construction industry (Hu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Proposing a multifaceted model for adopting prefabricated construction technology in the construction industry

Yuan

et al. 2021

ECAM

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Purpose Although prefabricated construction (PC) technology has attracted considerable attention worldwide because of its significant role in the global fight against COVID-19, market-driven adoption is still limited. The mechanisms for PC technology adoption have yet to be defined, which inhibits its diffusion in the construction market. This study aims to reveal the intrinsic motivation and action mechanism for PC technology adoption. Design/methodology/approach Drawing on the technology acceptance model (TAM), the study integrates characteristics from the diffusion of innovation theory to propose a multifaceted model for explaining practitioners’ PC technology adoption behavior from technology, organization and environment contexts. The proposed theoretical model was empirically examined via a survey of 234 professionals in mainland China using the partial least squares-structural equation modeling technique. Findings The outcomes indicated that relative advantage, corporate social responsibility and market demand are significantly positively related to practitioners’ perceived usefulness from PC technology. Regulatory support and trading partner support have noticeable positive effects on practitioners’ perceived ease of use from PC technology. Perceived ease of use is found to positively influence perceived usefulness, and both of them have a positive influence on the attitude toward adopting PC technology. Attitude is further confirmed as an important predictor of adoption intention, which would lead to actual PC technology adoption behavior. Originality/value To the best of the authors’ knowledge, this paper is the first attempt to explore industry perceptions toward PC technology adoption, providing valuable guidance for the effective diffusion of PC technology and laying a reliable foundation for research on other construction innovation adoption in post-COVID-19.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Proposing a multifaceted model for adopting prefabricated construction technology in the construction industry

Yuan

et al. 2021

ECAM

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“…Energy and CO 2 emissions can be regarded as being 'embodied' within the building materials. Over the past few decades, embodied energy and CO 2 emissions of building materials have been studied in different parts of the globe [3][4][5][6][7]. This has given a holistic comprehension of the energy consumption and CO 2 emissions as part of buildings construction, eventually providing a better understanding regarding the sustainability of buildings over their service life.…”

Section: Introductionmentioning

confidence: 99%

Embodied Energy and CO2 Emissions of Widely Used Building Materials: The Ethiopian Context

Taffese

Abegaz

2019

Buildings

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Buildings use a wide range of construction materials, and the manufacturing of each material consumes energy and emits CO2. Several studies have already been conducted to evaluate the embodied energy and the related CO2 emissions of building materials, which are mainly based on case studies from developed countries. There is a considerable gap in cases of developing countries regarding assessment of embodied energy and CO2 emissions of these building materials. This study identified the top five most used construction materials (cement, sand, coarse aggregates, hollow concrete blocks, and reinforcement bars), which are also prime sources of waste generation during construction in the Ethiopian building construction sector. Then, what followed was the evaluation of the embodied energies and CO2 emissions of these materials by examining five commercial and public buildings within the cradle-to-site lifecycle boundary. The evaluation results demonstrated that cement, hollow concrete blocks (HCB), and reinforcement bars (rebars) are the major consumers of energy and major CO2 emitters. Cumulatively, they were responsible for 94% of the embodied energy and 98% of the CO2 emissions. The waste part of the construction materials has inflated the embodied energy and the subsequent CO2 emissions considerably. The study also recommended several strategies for the reduction of embodied energy and the related CO2 emissions. The research delivers critical insights into embodied energy and CO2 emissions of the five most used building materials in the Ethiopian construction industry, as there are no prior studies on this theme. This might be a cause to arouse awareness and interest among the policy makers and the wider public to clearly understand the importance of research on this crucial issue to develop national energy and CO2 descriptors for construction materials, in order to take care of our naturally endowed, but yet fragile, human habitat.

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“…The literature shows that IO and hybrid-based assessments tend to report higher impacts than PLCA due to higher system completion [81][82][83]. Furthermore, Crawford and Stephan [84] and Crawford et al [85] found that a hybrid LCI can produce embodied energy figures two to four times larger at a whole-building level compared to using process analysis data only.…”

Section: Appendix a List Of Case Studies And Basic Propertiesmentioning

confidence: 99%

Life Cycle GHG Emissions of Residential Buildings in Humid Subtropical and Tropical Climates: Systematic Review and Analysis

et al. 2020

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Improving the environmental life cycle performance of buildings by focusing on the reduction of greenhouse gas (GHG) emissions along the building life cycle is considered a crucial step in achieving global climate targets. This paper provides a systematic review and analysis of 75 residential case studies in humid subtropical and tropical climates. The study investigates GHG emissions across the building life cycle, i.e., it analyses both embodied and operational GHG emissions. Furthermore, the influence of various parameters, such as building location, typology, construction materials and energy performance, as well as methodological aspects are investigated. Through comparative analysis, the study identifies promising design strategies for reducing life cycle-related GHG emissions of buildings operating in subtropical and tropical climate zones. The results show that life cycle GHG emissions in the analysed studies are mostly dominated by operational emissions and are the highest for energy-intensive multi-family buildings. Buildings following low or net-zero energy performance targets show potential reductions of 50–80% for total life cycle GHG emissions, compared to buildings with conventional energy performance. Implementation of on-site photovoltaic (PV) systems provides the highest reduction potential for both operational and total life cycle GHG emissions, with potential reductions of 92% to 100% and 48% to 66%, respectively. Strategies related to increased use of timber and other bio-based materials present the highest potential for reduction of embodied GHG emissions, with reductions of 9% to 73%.

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A hybrid life cycle assessment of embodied energy and carbon emissions from conventional and industrialised building systems in Malaysia

Cited by 48 publications

References 65 publications

Proposing a multifaceted model for adopting prefabricated construction technology in the construction industry

Proposing a multifaceted model for adopting prefabricated construction technology in the construction industry

Embodied Energy and CO2 Emissions of Widely Used Building Materials: The Ethiopian Context

Life Cycle GHG Emissions of Residential Buildings in Humid Subtropical and Tropical Climates: Systematic Review and Analysis

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