Life cycle environmental impact assessment of a bridge with different strengthening schemes

Pang, Bo; Peng-chao, Yang; Wang, Yuanfeng; Kendall, Alissa; Xie, Huibing; Zhang, Yurong

doi:10.1007/s11367-015-0936-1

Cited by 51 publications

(46 citation statements)

References 21 publications

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“…The principal material used in this phase is the formwork, and the construction machinery considered includes all the different kinds of machinery, such as cranes, dumpers, scaffolding, compactors, and so on. Most authors who have studied the LCA of bridges [21][22][23][24] stated that this phase is much less significant than the others. However, once the construction method is determined, the amount of energy and diesel consumed by construction machinery must also be determined according to the literature, data from machinery companies, or other databases.…”

Section: Constructionmentioning

confidence: 97%

“…The main goal is to obtain a quantitative assessment of the environmental impacts of the bridge that can be used to carry out comparisons. Pang et al [24] stated that there are three main reasons to carry out an LCA on bridges: comparison of different alternatives, comparison of different bridge component alternatives, and comparison of new material with conventional material. In order to make a comparison between bridges at the same location, it is necessary to satisfy three conditions: similar deck dimensions, similar load capacities, and similar life-span.…”

Section: Goal and Scope Definitionmentioning

confidence: 99%

“…On the one hand, some authors use a literature review to consider the recommended maintenance activities in order to evaluate the environmental impact [21][22][23], and others suggest different scenarios to assess which one has the least environmental impact [24]. In addition, if the closure of the bridge is total, depending on the features of the bridge design, materials and the ambient environment, it is possible to determine the number of maintenance periods required.…”

Section: Maintenance and Usementioning

confidence: 99%

See 2 more Smart Citations

Life-Cycle Assessment: A Comparison between Two Optimal Post-Tensioned Concrete Box-Girder Road Bridges

et al. 2017

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Abstract:The goal of sustainability involves a consensus among economic, environmental and social factors. Due to climate change, environmental concerns have increased in society. The construction sector is among the most active high environmental impact sectors. This paper proposes new features to consider a more detailed life-cycle assessment (LCA) of reinforced or pre-stressed concrete structures. Besides, this study carries out a comparison between two optimal post-tensioned concrete box-girder road bridges with different maintenance scenarios. ReCiPe method is used to carry out the life-cycle assessment. The midpoint approach shows a complete environmental profile with 18 impact categories. In practice, all the impact categories make their highest contribution in the manufacturing and use and maintenance stages. Afterwards, these two stages are analyzed to identify the process which makes the greatest contribution. In addition, the contribution of CO 2 fixation is taken into account, reducing the environmental impact in the use and maintenance and end of life stages. The endpoint approach shows more interpretable results, enabling an easier comparison between different stages and solutions. The results show the importance of considering the whole life-cycle, since a better design reduces the global environmental impact despite a higher environmental impact in the manufacturing stage.

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Section: Constructionmentioning

confidence: 97%

Section: Goal and Scope Definitionmentioning

confidence: 99%

Section: Maintenance and Usementioning

confidence: 99%

See 1 more Smart Citation

Life-Cycle Assessment: A Comparison between Two Optimal Post-Tensioned Concrete Box-Girder Road Bridges

et al. 2017

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“…This study takes into account all the machinery necessary to repair the deterioration of the bridge including the transport to the bridge location and the increase in emissions generated due to the traffic detour [13,14]. The traffic detour is considered taking into account the average daily traffic of 8500 vehicles/day, where trucks comprise 10% of vehicles and a detour distance of 2.9 km.…”

Section: Use and Maintenancementioning

confidence: 99%

“…This complete environmental profile can be obtained using the life-cycle assessment (LCA) process. LCA is one of the most important and accepted methods of assessing the environmental impacts [11][12][13][14][15][16], making it an excellent tool for assessing the environmental impact of a bridge.…”

Section: Introductionmentioning

confidence: 99%

An Optimization-LCA of a Prestressed Concrete Precast Bridge

et al. 2018

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Abstract:The construction sector is one of the most active sectors, with a high economic, environmental and social impact. For this reason, the sustainable design of structures and buildings is a trend that must be followed. Bridges are one of the most important structures in the construction sector, as their construction and maintenance are crucial to achieve and retain the best transport between different places. Nowadays, the choice of bridge design depends on the initial economic criterion but other criteria should be considered to assess the environmental and social aspects. Furthermore, for a correct choice, the influence of these criteria during the bridge life-cycle must be taken into account. This study aims to analyse the life-cycle environmental impact of efficient structures from the economic point of view. Life-cycle assessment process is used to obtain all the environmental information about bridges. In this paper, a prestressed concrete precast bridge is cost-optimized and afterwards, the life-cycle assessment is carried out to achieve the environmental information about the bridge.

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