Stakeholder influence on global warming potential of reinforced concrete structure

Silva, Fernanda Belizario; Galimshina, Alina; Reis, Daniel Costa; Quattrone, Marco; Gomes, Beatriz Maffini; Marin, Marcelo Cuadrado; Moustapha, Maliki; John, Vanderley M.; Habert, Guillaume

doi:10.1016/j.jobe.2021.102979

Cited by 9 publications

(5 citation statements)

References 49 publications

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“…As a result, by specifying different volumes of each material, while meeting design requirements such as maximum allowable slab deflection, there can be notable shifts in net GHG emissions. Notably, this work shows that low strength concrete or low reinforcement ratios do not always correlate to low GHG emissions when the whole member design is considered, which is in line with findings by Belizario-Silva et al 29 . For structural slabs designed at the yielding and ultimate stage, the lowest emissions for our case study loadings (discussed in the Supplementary Information) occur at the highest reinforcement ratio and lowest concrete compressive strength assessed (highest emissions occur for the lowest reinforcement ratio and highest strength).…”

Section: Resultssupporting

confidence: 92%

“…GHG emissions when the whole member design is considered, which is in line with findings by Belizario-Silva et al 29 . For structural slabs designed at the yielding and ultimate stage, the lowest emissions for our case study loadings (discussed in the Supplementary Information) occur at the highest reinforcement ratio and lowest concrete compressive strength assessed (highest emissions occur for the lowest reinforcement ratio and highest strength).…”

Section: Structural Designsupporting

confidence: 91%

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Near-term pathways for decarbonizing global concrete production

2023

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Growing urban populations and deteriorating infrastructure are driving unprecedented demands for concrete, a material for which there is no alternative that can meet its functional capacity. The production of concrete, more particularly the hydraulic cement that glues the material together, is one of the world’s largest sources of greenhouse gas (GHG) emissions. While this is a well-studied source of emissions, the consequences of efficient structural design decisions on mitigating these emissions are not yet well known. Here, we show that a combination of manufacturing and engineering decisions have the potential to reduce over 76% of the GHG emissions from cement and concrete production, equivalent to 3.6 Gt CO2-eq lower emissions in 2100. The studied methods similarly result in more efficient utilization of resources by lowering cement demand by up to 65%, leading to an expected reduction in all other environmental burdens. These findings show that the flexibility within current concrete design approaches can contribute to climate mitigation without requiring heavy capital investment in alternative manufacturing methods or alternative materials.

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Section: Resultssupporting

confidence: 92%

Section: Structural Designsupporting

confidence: 91%

Near-term pathways for decarbonizing global concrete production

2023

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“…The variability of this data could be controlled with an uncertainty analysis. Such an analysis provides a probability distribution of results rather than a single value, making the estimated value of the impacts from LCA more reliable and secure [63].…”

Section: Discussionmentioning

confidence: 99%

Developing an integrated BIM/LCA framework to assess the sustainability of using earthen architecture

Estève

Beckett

Pedreschi

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The construction industry is responsible for one-quarter of the solid waste generated globally, much of which is excavated soil. Repurposing this soil for the use of earthen architecture (EA) will reduce a considerable amount of this waste. However, little research has been conducted on how to assess the use of EA within the architectural, engineering, environmental and economic context, and in comparison with other construction system solutions. This paper presents the development of an integrated building information modelling (BIM) and life cycle assessment (LCA) framework to explore what advantages EA may have, based on the client’s needs and the building’s requirements. The decision-making conditions and criteria for the use of EA are firstly identified in an extensive literature review supported by interviews with decision-makers. A workflow is secondly proposed to apply a LCA evaluating the decision criteria in a BIM tool at the early-design stages. This method allows for the evaluation and comparison of choice criteria as functional requirements of the building and objectives set by the decision-makers. The flexibility of setting input parameters in this tool increases the visibility of the potential benefits of EA over other construction systems. Along with this approach, upcoming applications on case studies will aim to be replicable by designers, based on their practices and design tools, to support clients in their choice of using EA.

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“…The selection and production of precast concrete elements become more significant with optimized concrete mixes when production processing gains relevance over the impact of resources. It can increase from 20% to 37% of the total global warming potential when conventional mixes are replaced by optimized mixes [20]. The concrete precast industry is moving ahead in LAC to supply fast new infrastructure construction in terms of processes.…”

Section: Countrymentioning

confidence: 99%

Overview of cement and concrete production in Latin America and the Caribbean with a focus on the goals of reaching carbon neutrality

Zaccardi

Pareja²,

Rojas³

et al. 2022

RILEM Tech Lett

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Carbon neutrality to limit global warming is an increasing challenge for all industries, particularly for the cement industry, due to the chemical emission of the process. For decades, reducing the clinker factor has been one of the main strategies to reduce the carbon footprint. Additional cuttings in the clinker content of cements seem possible with the upsurge of novel supplementary cementitious materials. This potential contribution represents only a fraction of the required carbon reductions for achieving the goal of carbon neutrality in the coming decades. This paper describes the current situation of the cement industry in Latin America and the Caribbean and the global opportunities and strategies to reduce the carbon footprint of cement and concrete and their adaptation to the regional conditions. Besides describing emerging supplementary cementitious materials, the potential contributions of industrialization and quality control are discussed. Moreover, limitations related to geography and standardization are analyzed. Regional considerations are made given the specific prospects of human development.

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Stakeholder influence on global warming potential of reinforced concrete structure

Cited by 9 publications

References 49 publications

Near-term pathways for decarbonizing global concrete production

Near-term pathways for decarbonizing global concrete production

Developing an integrated BIM/LCA framework to assess the sustainability of using earthen architecture

Overview of cement and concrete production in Latin America and the Caribbean with a focus on the goals of reaching carbon neutrality

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