Life Cycle Assessment Optimization of a Shotcrete Tunnel Lining

Štěpánek, Petr; Lanikova, I; Venclovský, Jakub

doi:10.1088/1757-899x/442/1/012009

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…The designed algorithm is part of the DLL library which is used for optimization in GAMS interface by solver CONOPT. More details can be found in [9] or [10].…”

Section: Examplementioning

confidence: 99%

Calculation of Bending Stiffness and its First Derivatives Related to Optimization of a Steel-Reinforced Concrete Cross Section

Venclovský

Štěpánek

2016

SSP

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This article focuses on creating an algorithm for the calculation of bending stiffness of an arbitrary polygonal cross section, including the first derivatives of this stiffness with respect to all the input variables. The coordinates of vertices of the cross section are also among these input variables. The algorithm is in principle based on dividing the cross section into trapezoids, calculating zero, first and second moment of area of these trapezoids, including partial derivatives with respect to all the input variables, and then compiling all these partial results into a final output. A DLL library based on this algorithm is then used in an optimization solver based on a reduced‑gradient method. This solver is put into practice to optimize the given cross section characteristics according to prescribed criteria.

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“…The designed algorithm is part of the DLL library which is used for optimization in GAMS interface by solver CONOPT. More details can be found in [9] or [10].…”

Section: Examplementioning

confidence: 99%

Calculation of Bending Stiffness and its First Derivatives Related to Optimization of a Steel-Reinforced Concrete Cross Section

Venclovský

Štěpánek

2016

SSP

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“…Various strategies have been adopted, including optimizing the production process. [6], optimization of the design process [7], adopting alternative raw materials [8] [9], use of alternative binders [10] [11] use of waste materials [1], reducing waste production [12], use of local products [13].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Evaluation of Highway Pavement Materials Using Life Cycle Assessment Technique

Bayoumy,

Bakhoum,

Salem

et al. 2024

Engineering Research Journal (Shoubra)

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The pursuit of sustainable pavement construction necessitates careful consideration of selecting appropriate materials due to their significant impact on road investments. Therefore, this study aims to analyze and assess the environmental effects of four distinct pavement materials including A main road, Plain concrete (PC), and three equivalent alternative roads: reinforced concrete (RC), fibrous concrete (FRC), and Hot Mix Asphalt (HMA). The study assesses various pavement alternatives by considering their cumulative energy demand and damages across different categories. The life Cycle Assessment (LCA) tool is used by implementing LCIA ReCiPe 2016 Endpoint (H) V1.07 / World (2010) H/A methodology and Simapro software. A case study of the Cairo-Suez Desert Road in Egypt is selected to apply the study to it. The damages are measured in two categories: human health and ecosystem quality. The results indicate that RC pavement has the highest damage effect in both categories, with values of 94.20 and 36.99 respectively. Both PC and FRC pavements exhibit damage but to a lesser extent. HMA shows a relatively lower damage effect in both categories. These findings can enhance the comprehension of environmental implications associated with various pavement materials, offering valuable insights to decision-makers in the process of selecting sustainable pavement options.

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Life Cycle Assessment Optimization of a Shotcrete Tunnel Lining

Cited by 2 publications

References 14 publications

Calculation of Bending Stiffness and its First Derivatives Related to Optimization of a Steel-Reinforced Concrete Cross Section

Calculation of Bending Stiffness and its First Derivatives Related to Optimization of a Steel-Reinforced Concrete Cross Section

Sustainable Evaluation of Highway Pavement Materials Using Life Cycle Assessment Technique

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