An Optimization-LCA of a Prestressed Concrete Precast Bridge

Penadés-Plà, Vicent; García-Segura, Tatiana; Martí, José V.; Piqueras, Víctor Yepes

doi:10.3390/su10030685

Cited by 41 publications

(40 citation statements)

References 26 publications

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“…In urban environments, this impact may lead to adopting preventive measures that are more expensive in economic terms, but that require fewer interventions and, consequently, generate less social costs. Thus, the integration of social criteria in decision making is presented as an effective step towards a sustainable structural design [16,17].…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Cost Assessment of Preventive Strategies Applied to Prestressed Concrete Bridges Exposed to Chlorides

2018

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This paper applies Life Cycle Assessment methodology to aid in the decision making to select the preventive measure against chloride corrosion in concrete structures that works best for the socioeconomic context of the structure. The assumed model combines the concepts of Life Cycle Cost Analysis and Social Life Cycle Analysis to assess the impacts on users derived from the maintenance activities associated with each alternative analyzed in terms of economic costs. The model has been applied to a prestressed concrete bridge to obtain a preventive measure that can reduce the total costs incurred over the period of analysis by up to 58.5% compared to the cost of the current solution.

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Section: Introductionmentioning

confidence: 99%

Life Cycle Cost Assessment of Preventive Strategies Applied to Prestressed Concrete Bridges Exposed to Chlorides

2018

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“…These differences are too small to transform the conclusions of the study. On the one hand, transport is a minor contributor in GWP for our scenario, but in other cases, the transport could make an important contribution, for example in the case of the manufacturing of bridge [88]. According to Figures 6 and 7, the use phase is a minor contributor in all categories, hence changes in calculations and estimations of these processes (deconstruction, rebuilding, manipulation on site, etc.)…”

Section: Overview Of Contributions Caused By Phases and Processesmentioning

confidence: 91%

“…These differences are too small to transform the conclusions of the study. On the one hand, transport is a minor contributor in GWP for our scenario, but in other cases, the transport could make an important contribution, for example in the case of the manufacturing of bridge [88]. Figure 5 shows the influence on the impact caused by EoL, which depends on the plan and can be 22%-45% in the GWP category.…”

Section: Transportmentioning

confidence: 95%

Sustainable Masonry Made from Recycled Aggregates: LCA Case Study

et al. 2020

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For a sustainable building industry, reusable construction with a low demand for primary resources is needed. Moreover, if we want to reduce the amount of construction and demolition waste, construction with recycled aggregate should be considered. To investigate the environmental impacts of such concrete construction, life cycle assessment (LCA) was used to compare the following types of concrete construction: Reusable blocks with recycled brick aggregate, reusable blocks with recycled concrete, reusable blocks with natural aggregate, and regular concrete wall. Firstly, the properties of new concrete with recycled aggregate were measured, such as physical, mechanical, and thermal properties. Then, different constructions were designed and assessed using the method of Institute of Environmental Sciences (CML2001) and the method of National Institute for Public Health and the Environment (ReCiPe 2016) as characterization methods. Unsurprisingly, the regular concrete wall had a higher impact on most of the impact categories, e.g., 113 kg CO 2 eq. (in the first scenario, using CML2001). In accordance with the circular principles, the reusability of blocks and recycling of aggregate are the main factors that affect the environmental impact of the constructions. Thus, the global warming potential (GWP) of construction with reusable recycled concrete blocks was only 53 kg CO 2 eq. (in the second scenario). Moreover, we show differences in the results of CML2001 and ReCiPe 2016, e.g., in the Photochemical Oxidant Creation category.

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“…A practice-oriented assessment method and index of sustainability on bridge construction technology are essential for selection of sustainable bridge construction schemes [22]. Penadés-Plà et al [23] analyzed the life-cycle environmental impact of a prestressed concrete precast bridge from the economic point of view, and proposed an optimization-life-cycle assessment method. Chang et al [24] established an index system and evaluated the sustainability of high-speed railway construction projects.…”

Section: Introductionmentioning

confidence: 99%

A Novel Construction Technology for Self-Anchored Suspension Bridge Considering Safety and Sustainability Performance

Wang

Dong

et al. 2020

Sustainability

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To promote sustainable development of civil infrastructures, minimizing environmental impact and mobility disruptions have been elevated to a higher priority during decision-making for bridge construction scheme. This study presents a novel temporary pylon-anchor (TPA) technology for construction of self-anchored suspension bridges by considering not only safety performance, but also environmental impacts. A practical assessment method and index of sustainability associated with bridge construction technology are established to facilitate the selection of construction schemes. The sustainability index takes the environmental impact, traffic disruption, onsite construction materials and equipment, onsite construction cost, and onsite construction risk into consideration. The sustainability index associated with both conventional and novel construction methods is assessed and compared in this paper. Specifically, a novel girder-pylon antithrust system (GPAS) is proposed, which is the crucial component of the TPA technology in engineering application. In addition, an analytical approach is developed, considering both global load-carrying capacity and local stress distribution within the design and construction of the GPAS. The applicability and rationality of the proposed construction technology are illustrated by the successful application in real-world engineering. The field tests and sustainability assessment during the construction stage reveal that the proposed sustainability assessment method and analytical approach can facilitate the implementation of sustainable construction for self-anchored suspension bridges by considering both construction safety and sustainability.

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An Optimization-LCA of a Prestressed Concrete Precast Bridge

Cited by 41 publications

References 26 publications

Life Cycle Cost Assessment of Preventive Strategies Applied to Prestressed Concrete Bridges Exposed to Chlorides

Life Cycle Cost Assessment of Preventive Strategies Applied to Prestressed Concrete Bridges Exposed to Chlorides

Sustainable Masonry Made from Recycled Aggregates: LCA Case Study

A Novel Construction Technology for Self-Anchored Suspension Bridge Considering Safety and Sustainability Performance

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