Durability of silica fume concrete in Aursundet Bridge

Årskog, Vemund; Sengul, O; Gjørv, Odd E.

doi:10.1201/b10552-93

Cited by 5 publications

(6 citation statements)

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“…Regarding the environmental impact, patch repair with shotcreting and hydrophobic surface protection were compared by Årskog et al [65]. It was pointed out that the impacts from the patch repair strongly exceed that of the hydrophobic surface protection: the use of energy (MJ/m 2 ) is 21.6 times higher, global warming (kg CO 2 eq/m 2 ) is 46.9 times higher, acidification (g SO 2 eq/m 2 ) is 125 times higher, eutrophication (g SO 2 eq/m 2 ) is 126.8 times higher, and photo-oxidant formation (g Ethene eq/m 2 ) is 5.5 times higher.…”

Section: Assessment Through Lca or Lccamentioning

confidence: 99%

Sustainable Assessment of Concrete Repairs through Life Cycle Assessment (LCA) and Life Cycle Cost Analysis (LCCA)

et al. 2022

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Nowadays, a vast number of concrete structures are approaching the end of their expected service life. The need for maintenance and repair is high due to the continued deterioration of the existing building inventory and infrastructure, resulting in a large need for concrete repair in the near future. Reinforcement corrosion is the most important deterioration mechanism, causing (i) severe concrete damage (cracking along reinforcement and the spalling of the cover concrete) and (ii) loss in steel section. Therefore, appropriate repair techniques for corrosion damage are the main focus of this review paper. With the European transition towards a circular economy and with sustainable development goals in mind, it is also important to consider the environmental impact along with the technical requirements and life cycle cost. In order to improve the sustainability of concrete structures and repairs over their life cycle, life cycle assessment (LCA) and life cycle cost analysis (LCCA) should be applied. However, more research efforts are needed in this field for further development and refinement. This literature review tries to adress this need by compiling existing knowledge and gaps in the state-of-the-art. A comprehensive literature survey about concrete repair assessment through LCA and LCCA is performed and showed a high potential for further investigation. Additionally, it was noticed that many differences are present between the studies considering LCA and/or LCCA, namely, the considered (i) structures, (ii) damage causes, (iii) repair techniques, (iv) estimated and expected life spans, (v) LCCA methods, (vi) life cycle impact assessment (LCIA) methods, etc. Therefore, due to the case specificity, mutual comparison is challenging.

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Section: Assessment Through Lca or Lccamentioning

confidence: 99%

Sustainable Assessment of Concrete Repairs through Life Cycle Assessment (LCA) and Life Cycle Cost Analysis (LCCA)

et al. 2022

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“…To evaluate the environmental impact of construction processes, researchers have been studying the life cycle assessment (LCA) of different construction activities [10][11][12][13] due to its contribution to the total carbon emissions to the environment [14,15]. This industry's high impact is due to its cement requirements, which represent 5% of the global CO 2 emissions contribution [16]. As a consequence, construction substantially impacts environmental pollution [17].…”

Section: Introductionmentioning

confidence: 99%

Social Impact Assessment Comparison of Composite and Concrete Bridge Alternatives

Martí

2022

Sustainability

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The definition of sustainability includes three fundamental pillars: economic, environmental, and social. Studies of the economic impact on civil engineering infrastructures have been focused on cost reduction. It is not necessarily in line with economic sustainability due to the lack of other economic factors. Moreover, the social pillar assessment has been weakly developed compared to the economic and the environmental ones. It is essential to focus on the social pillar and evaluate clear indicators that allow researchers to compare alternatives. Furthermore, bridge life cycle assessment studies have been focused on concrete options. This has resulted in a lack of analysis of the impact of composite bridge alternatives. This study is conducted in two stages. The first part of the study makes a cradle-to-grave social and environmental sustainability evaluation with the SOCA v2 and ecoinvent v3.7.1 databases. This assessment is carried out on four concrete and composite bridge alternatives with span lengths between 15 and 40 m. The social impact weighting method and recipe have been used to obtain the social and environmental indicators. The second part of the study compares the results obtained from the social and environmental assessment of the concrete and the composite alternatives varying the steel recycling rate. The bridge alternatives are prestressed concrete solid slab, prestressed concrete lightened slab, prestressed concrete box-girder, and steel–concrete composite box-girder. The results show that composite options are the best for environmental impact, but the concrete box girder solutions are better for social impact. Furthermore, an increase in the steel recycling rate increases the social impact and decreases the environmental one.

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“…Construction is one of the most carbon-intensive industries [2], [3], and in terms of CO 2 emissions, its cement requirements alone produce 5% of the total emissions [161]. Furthermore, construction contributes to environmental pollution [4].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, construction contributes to environmental pollution [4]. This negative contribution is mainly produced by cement and concrete production [161], [162]. The impact of these activities is produced by their energy consumption, and in the construction sector, concrete is one of the most important materials used in buildings.…”

Section: Introductionmentioning

confidence: 99%

“…To evaluate the environmental impact of construction processes, researchers have been studying the life cycle assessment (LCA) of different construction activities [19], [148], [169], [178] due to its contribution to the total carbon emissions to the environment [2], [3]. This industry's high impact is due to its cement requirements, which represent 5% of the global CO 2 emissions contribution [161]. As a consequence, construction substantially impacts environmental pollution [4].…”

Section: Introductionmentioning

confidence: 99%

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Optimal Deep Learning Assisted Design of Socially and Environmentally Efficient Steel Concrete Composite Bridges under Constrained Budgets

Martínez Muñoz

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Steel-concrete composite bridges are used as an alternative to concrete bridges because of their ability to adapt their geometry to design constraints and the possibility of reusing some of the materials in the structure. In this review, we report the research carried out on the design, behavior, optimization, construction processes, maintenance, impact assessment, and decision-making techniques of composite bridges in order to arrive at a complete design approach. In addition to a qualitative analysis, a multivariate analysis is used to identify knowledge gaps related to bridge design and to detect trends in research. An additional objective is to make visible the gaps in the sustainable design of composite steel-concrete bridges, which allows us to focus on future research studies. The results of this work show how researchers have concentrated their studies on the preliminary design of bridges with a mainly economic approach, while at a global level, concern is directed towards the search for sustainable solutions. It is found that life cycle impact assessment and decisionmaking strategies allow bridge managers to improve decision-making, particularly at the end of the life cycle of composite bridges.

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Durability of silica fume concrete in Aursundet Bridge

Cited by 5 publications

References 1 publication

Sustainable Assessment of Concrete Repairs through Life Cycle Assessment (LCA) and Life Cycle Cost Analysis (LCCA)

Sustainable Assessment of Concrete Repairs through Life Cycle Assessment (LCA) and Life Cycle Cost Analysis (LCCA)

Social Impact Assessment Comparison of Composite and Concrete Bridge Alternatives

Optimal Deep Learning Assisted Design of Socially and Environmentally Efficient Steel Concrete Composite Bridges under Constrained Budgets

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