Decision Models to Support Greenhouse Gas Emissions Reduction from Transportation Construction Projects

Avetisyan, Hakob; Miller-Hooks, Elise; Melanta, Suvish

doi:10.1061/(asce)co.1943-7862.0000477

Cited by 50 publications

(39 citation statements)

References 3 publications

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“…In view of the above, the United States Environmental Protection Agency (EPA) has emphasized the adoption of emission reduction practices by offering certain incentives to the operators [11]. In this context, EPA has launched Voluntary Diesel Retrofit Program, Carl Moyer Program and Texas Emissions Reduction Plan which are noteworthy incentive programs in order to reduce the GHG emissions.…”

Section: Strategies For Emission Reductionmentioning

confidence: 99%

“…diesel versus gasoline, engine technology and horse power [10]. Equipment categorization, age and horsepower and as well as type of fuel used, can greatly affect rates of emissions [11]. Based on the previous study, it was determined that during construction phase, earthwork produces highest percentage of GHG emissions [4].…”

Section: Onsite Emissions and Their Hazardous Effectsmentioning

confidence: 99%

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Environmental implications of onsite mechanization in the Malaysian construction industry

Waris

Liew

Khamidi

et al. 2014

WIT Transactions on Ecology and the Environment

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In Malaysia, there has been a growing need for mechanization in recent years due to the high construction demand under the Economic Transformation Programme. Onsite mechanization in construction implies the use of equipment and machinery that are powered by fossil fuels with the aim of reducing the dependency on manual labour and to increase productivity, quality and efficiency. However, this heavy equipment and machinery are also responsible for issues pertaining to environment, health and safety of human beings. All nonroad diesel engine machinery emits hazardous gases, particulate matters, solid waste and contaminate land, water and the environment. Prior research on environmental impacts of construction works was more focused on raw materials, its manufacturing and operational phase of the facility. Therefore, the aim of this research is to focus on environmental concerns that are important during construction and mainly due to the operation of onsite heavy construction equipment. Data for the analysis was collected through a questionnaire survey from Malaysian G7 class 'A' contractors. The results of the survey show that despite the good awareness of Malaysian contractors towards a green environment, their practices for controlling energy consumption and greenhouse gases (GHG) are still in their infancy stages. It was also found that environment management systems are not highly implemented by the contractors. The survey results further indicate that energy saving, GHG and black smoke emission are the top ranking concerns of contractors when operating onsite equipment and

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Section: Strategies For Emission Reductionmentioning

confidence: 99%

Section: Onsite Emissions and Their Hazardous Effectsmentioning

confidence: 99%

Environmental implications of onsite mechanization in the Malaysian construction industry

Waris

Liew

Khamidi

et al. 2014

WIT Transactions on Ecology and the Environment

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“…The carbon emissions of the construction phase can be minimized through different approaches including optimizing the construction operations to reduce the idle time of equipment, selection of optimal equipment for a construction operation, optimizing the operation of equipment, and minimizing the on-site transport including both horizontal and vertical transport [105][106][107][108][109][110][111][112]. Among the different construction operations, earthmoving, concerting, and lifting operations have been identified as the primary contributors to carbon emissions in the construction phase [5,103,104].…”

Section: Construction Optimization Strategiesmentioning

confidence: 99%

Estimation and Minimization of Embodied Carbon of Buildings: A Review

2017

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Building and construction is responsible for up to 30% of annual global greenhouse gas (GHG) emissions, commonly reported in carbon equivalent unit. Carbon emissions are incurred in all stages of a building's life cycle and are generally categorised into operating carbon and embodied carbon, each making varying contributions to the life cycle carbon depending on the building's characteristics. With recent advances in reducing the operating carbon of buildings, the available literature indicates a clear shift in attention towards investigating strategies to minimize embodied carbon. However, minimizing the embodied carbon of buildings is challenging and requires evaluating the effects of embodied carbon reduction strategies on the emissions incurred in different life cycle phases, as well as the operating carbon of the building. In this paper, the available literature on strategies for reducing the embodied carbon of buildings, as well as methods for estimating the embodied carbon of buildings, is reviewed and the strengths and weaknesses of each method are highlighted.

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“…For example, the pollution of a 130 kW-power loader is nearly 500 times more than that of a private car [3]. Construction industry by itself is ranked the third highest emitted pollution industry behind oil and gas, and chemical manufacturing sectors, and also accounts for the third CO2 emitter per unit of energy used just after cement and steel production industries [4]. Total GHG emission from construction and mining operations is estimated around 6.8% of all industrial emissions.…”

Section: Introductionmentioning

confidence: 99%

Emissions Modelling of Earthmoving Equipment

Barati¹,

Shen²

2016

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

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Earthmoving operations produce high amount of emissions and are one of the main sources of air pollutants in construction and mining industries. Modelling and quantifying the emissions produced by earthmoving equipment is the first step for developing emissions reduction schemes. Currently, emissions of construction and mining equipment are mainly estimated through simulation or laboratory tests which may not represent the real-world situations. This paper presents a comprehensive methodology to predict emission rates of carbon dioxide (CO2), carbon monoxide (CO), hydrocarbon (HC) and nitrogen oxides (NOx) of earthmoving equipment by considering operation modes and engine attributes. The developed framework includes three main processes of instrumentation, data collection and data analysis. Two instruments of portable emission measurement system (PEMS) and GPS aided inertial navigation system (GPS-INS) are proposed for conducting field experiments and collecting emission rates and operational parameters. Further, site observation is conducted to estimate the cycle time and time ratio of operation modes. An exploratory analysis method is then developed to process the gathered data and model emissions at operation and equipment level. The applicability of the developed methodology is finally verified through experimenting and modelling emissions of one loader and one excavator.

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Decision Models to Support Greenhouse Gas Emissions Reduction from Transportation Construction Projects

Cited by 50 publications

References 3 publications

Environmental implications of onsite mechanization in the Malaysian construction industry

Environmental implications of onsite mechanization in the Malaysian construction industry

Estimation and Minimization of Embodied Carbon of Buildings: A Review

Emissions Modelling of Earthmoving Equipment

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