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

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

doi:10.3390/su9101864

Cited by 69 publications

(63 citation statements)

References 33 publications

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“…FU was 1 m 2 of construction with a service life 100 years. Another different approach to the assessment of the End of life phase was investigated by Penades-Pla [89].…”

Section: Transportmentioning

confidence: 99%

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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“…FU was 1 m 2 of construction with a service life 100 years. Another different approach to the assessment of the End of life phase was investigated by Penades-Pla [89].…”

Section: Transportmentioning

confidence: 99%

Sustainable Masonry Made from Recycled Aggregates: LCA Case Study

et al. 2020

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“…In general terms, there is the need of refined decision-making approaches in order to use a rational approach in the selection of the optimal restoration strategy accounting for all the different economic, social and environmental aspects. Penadés-Plà et al (2017) presented an interesting review of previous literature studies dealing with the implementation of methods based on the Multiple-Attribute-Decision-Making (MADM) for a sustainable bridge design: among others, scoring methods (Podvezko, 2011), distance-based methods (Tamiza et al, 1998;Ballestero, 2007), pairwise comparison approaches like analytic hierarchy/network processes (Gorener, 2012;Ali et al, 2015;Rashidi et al, 2016), outranking methods (Behzadian et al, 2010;Govindan and Jepsen, 2016;Jajac et al, 2017), multi-attribute utility/value theory (Sarabando and Dias, 2010;Sabatino et al, 2015) can be viable solutions for a rational decision-making process. Recently Yoon and Hastak (2017) presented a multitiered prioritizing method based on urgency scales able to take into account two hierarchical selection steps based on urgency and total prioritization scales.…”

Section: Decision-making With Different Types Of Pismentioning

confidence: 99%

State-Of-Research on Performance Indicators for Bridge Quality Control and Management

Zanini

Faleschini

Casas

2019

Front. Built Environ.

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The present study provides a review of the most diffused technical and non-technical performance indicators adopted worldwide by infrastructure owners. This work, developed within the European COST Action TU 1406-"Quality specifications for roadway bridges, standardization at a European level," aims to summarize the state-of-art maintenance scheduling practices adopted by bridge owners, mainly focusing on the identification and classification of the most diffused performance indicators (PIs). PIs are subdivided in technical and non-technical ones: for this latter subclass, PIs are classified in environmental, social and economic-targeted. The study aims to be a reference for researchers dealing with performance-based assessments and bridge maintenance and management practices.

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“…Figure 3 considers the prefabrication process for PRC components and demonstrates three stages of the cradle-to-site life cycle (materials preparation stage, transportation stage, and on-site construction stage) for a high-rise building. Some studies replace the "materials preparation" by the term "manufacturing", such as the work by Penadés-Plà et al [35], but the concept is the same. and it is an effective solution for minimising the environmental impact.…”

Section: Lca Frameworkmentioning

confidence: 99%

Cradle-to-Site Carbon Emissions Assessment of Prefabricated Rebar Cages for High-Rise Buildings in China

Jiang¹,

Li²,

Dong³

et al. 2018

Sustainability

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Construction industrialization is growing rapidly and has received significant attention worldwide in recent years. The industrialization of construction results in several benefits, including the promotion of sustainable construction and the development and application of prefabrication techniques. The Prefabricated Rebar Cage (PRC) is an emerging solution applied to high-rise buildings as a replacement of the In-situ Reinforcing Bar (ISRB) construction method. This paper investigates the cradle-to-site carbon emissions of PRC, and compares the results with those of conventional in-situ rebar construction methods for high-rise buildings. The cradle-to-site cycle is divided into three stages, namely, material preparation, transportation, and on-site construction. For the material preparation stage, it is found that CO 2 emissions are increased by 3% when using PRC due to the operation of machinery during the prefabrication process. In the transportation stage, CO 2 emissions are found to increase by 3.3 times for PRC, as there is more transportation required for PRCs than for conventional construction methods. During the on-site construction stage, the PRC method demonstrates its advantages by reducing CO 2 emissions by 44.7%, which is attributed to decreased hoisting frequency and lower mechanical utilization for fewer joining activities. Overall, CO 2 emissions can be reduced by 1.24% by adopting the PRC method for high-rise buildings, and it is therefore recommended to adopt PRCs for this purpose. This research studies carbon emissions of PRC and contributes to promoting the sustainable development of prefabricated building techniques.Sustainability 2019, 11, 42 2 of 29 carbon emissions [3]. Being aware of the seriousness of the problem, the Chinese government recently launched the "National Plan for Coping with Climate Change" at the United Nations (UN) Climate Summit held on September 23, 2015, at the UN headquarters in New York, in order to realize the target of reducing carbon emission intensity by 40 to 45 percent by 2020 [4].As a major contributor to carbon emissions, the Chinese construction industry consumes approximately 40% of total energy resources worldwide, and accounts for nearly 36% of global CO 2 emissions [5] and 40% of the global turnover of raw materials [6]. Concrete is an indispensable building material with a global average annual consumption of 1t per capita [7]; it is also recognized as a carbon intensive material. Cement, as the key ingredient of concrete, accounts for 5-7% of global anthropogenic carbon emissions [8]. In China, concrete accounts for the largest proportion of all construction materials. As a result, one of the key ways to reduce carbon emissions of the construction industry is optimizing the construction method of concrete building.Residential buildings dominate in the global building sector, and thus contribute prodigiously to energy consumption and carbon emissions. For example, residential buildings account for 63% of total energy consumption and 77% of carbon emiss...

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

Cited by 69 publications

References 33 publications

Sustainable Masonry Made from Recycled Aggregates: LCA Case Study

Sustainable Masonry Made from Recycled Aggregates: LCA Case Study

State-Of-Research on Performance Indicators for Bridge Quality Control and Management

Cradle-to-Site Carbon Emissions Assessment of Prefabricated Rebar Cages for High-Rise Buildings in China

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