Structural fibre-reinforced cement-based composite designed for particle bed 3D printing systems. Case study Parque de Castilla Footbridge in Madrid

Fuente, Albert de la; Blanco, Ana; Galeote, Eduardo; Cavalaro, Sérgio Henrique Pialarissi

doi:10.1016/j.cemconres.2022.106801

Cited by 13 publications

(14 citation statements)

References 27 publications

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“…In the case of the 3DPC solution, the material employed was steel fiber-reinforced concrete (SFRC)-100 kg/m 3 of steel micro-fibers 13.0 mm long and 0.15 mm diameter. 27 For the UHPC solution, a SFRC mix based on the Bouveret footbridge 59 -75 kg/m 3 of steel fibers, compressive strength between 150 and 180 MPaalong with post-tensioning tendons are proposed. Finally, self-compacting carbon fiber-reinforced concrete-10 kg/m 3 of carbon fibers, compressive strength of 60 MPa-based on the Albstadt-Ebingen footbridge 61 is proposed for the TRC solution.…”

Section: Methodsmentioning

confidence: 99%

“…All the proposed solutions have the same geometrical conditions as the 3DPC solution, this being a footbridge already executed. 27,56 Therefore, the five footbridges have a 12.0 m span and a U-shaped section of 1.2 m useful width. Table 4 summarizes the footbridge section for the five solutions and the mid-span sections of these solutions are shown in Figure 5.…”

Section: Geometrymentioning

confidence: 99%

“…This increase of mechanical performance leads to reasonable safety margins required for new-still under development-materials and construction technologies. 27 Hence, in order to make informed decisions that place sustainability at their core, it is essential that practitioners and stakeholders have tools to select sustainable solutions, both considering conventional and DFC alternatives. Therefore, the objective of this paper is to provide designers with a tool that enables assessing the sustainability performance of construction and materials' technologies-covering conventional and innovative technologies.…”

Section: Introductionmentioning

confidence: 99%

“…This increase of strength respect to that derived from the design, although unnecessary from the strict mechanical performance requirements, is often imposed to cover other uncertainties (i.e., potential spatial heterogeneity of the mechanical properties of the material owe to fabrication process, geometric tolerances, among others) that have an impact of the structural reliability. This increase of mechanical performance leads to reasonable safety margins required for new—still under development—materials and construction technologies 27 …”

Section: Introductionmentioning

confidence: 99%

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3D‐printed concrete footbridges: An approach to assess the sustainability performance

Asensio,

Josa,

Monserrat

et al. 2023

Structural Concrete

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Digital fabrication with concrete (DFC) is fast becoming an attractive alternative for components (i.e., façades, urban furniture) and structural typologies (i.e., short‐span footbridges, columns, floor systems) for which complex geometries derived from particular aesthetical criteria and/or construction time constrictions are governing parameters. Additionally, some authors claim that this process allows improving the sustainability of structures, as less material is necessary compared to traditional concrete solutions, thus reducing greenhouse gas emissions linked to material consumption. Nonetheless, the environmental implications of DFC are still under scrutiny and remain objectively unquantified. In this study, a sustainability assessment model to allow decision‐makers to evaluate and compare concrete footbridge alternatives—from the sustainability perspective—including those constructed by means of 3D printed concrete (3DPC) techniques, is presented. The proposed approach is based on the MIVES method. For this purpose, the most representative criteria and indicators of sustainability identified are measured and weighted‐aggregated in a decision‐making tree. The sustainability index (SI) of each alternative is the outcome derived from the application of the model, and the SI was used as reference for evaluating the alternatives. The sustainability of 3D‐printed footbridges is quantified and compared to other concrete‐based solutions: traditional reinforced cast‐in‐place and precast concrete, as traditional solutions, and ultra‐high performance precast concrete and textile‐reinforced concrete, as innovative alternatives. The results of the analysis lead to conclude that 3D‐printed footbridges have positive impacts on environmental and social indicators, but economic indicators still need to be improved to attain a competitive solution. The approach proposed herein to assess the sustainability of footbridges can be extended to other cases and stakeholders' preferences by adapting the components of the method to sensitivities and particular boundary conditions of other scenarios.

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Section: Methodsmentioning

confidence: 99%

Section: Geometrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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3D‐printed concrete footbridges: An approach to assess the sustainability performance

Asensio,

Josa,

Monserrat

et al. 2023

Structural Concrete

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“…In 2016, a footbridge was constructed, "Parque de Castilla Footbridge," in Madrid. 8 U-shaped segments were printed using extrusionbased 3DCP (de la Fuente et al, 2022). Another bicycle bridge was built by the Eindhoven University of Technology (TU/e) using the "Design by Testing" approach (Salet et al, 2018) in the Netherlands.…”

Section: Assembly Of Segmentsmentioning

confidence: 99%

A review of concrete 3D printed structural members

Raphael

Senthilnathan

Patel

et al. 2023

Front. Built Environ.

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Concrete 3D Printing (3DP) is a potential technology for increasing automation and introducing digital fabrication in the construction industry. Concrete 3D Printing provides a significant advantage over conventional or precast methods, such as the prospects of topologically optimized designs and integrating functional components within the structural volume of the building components. Many previous studies have compiled state-of-art studies in design parameters, mix properties, robotic technologies, and reinforcement strategies in 3D printed elements. However, there is no literature review on using concrete 3D Printing technology to fabricate structural load-carrying elements and systems. As concrete 3DP is shifting towards a large-scale construction technology paradigm, it is essential to understand the current studies on structural members and focus on future studies to improve further. A systematic literature review process is adopted in this study, where relevant publications are searched and analyzed to answer a set of well-defined research questions. The review is structured by categorizing the publications based on issues/problems associated with structural members and the recent technology solutions developed. It gives an overall view of the studies, which is still in its nascent stage, and the areas which require future focus on 3D printing technology in large-scale construction projects.

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Reduction of the cement content in Selective Cement Activation

Herding,

Mai,

Lowke

2023

ce papers

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This work systematically investigates possibilities for the reduction of the cement content in Particle bed 3D Printing by Selective Cement Activation. To do so, the amount of cement is decreased (i) by increasing the aggregate content or (ii) by substitution with quartz flour of similar particle size to the cement. Both variants were then produced with constant water content and constant w/c ratio of 0.5, i.e. decreasing water content with decreasing cement content. To characterize the effect of the cement reduction, the compressive strength, as well as the dimensional accuracy are analyzed.It is shown that at constant w/c‐ratio the compressive strength decreases with decreasing cement content compared to the reference mix, while the dimensional accuracy is increasing. For a constant water content during printing, the compressive strength of cement‐reduced specimens is similar or only slightly lower compared to the reference. The dimensional accuracy, however, is decreasing.

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Structural fibre-reinforced cement-based composite designed for particle bed 3D printing systems. Case study Parque de Castilla Footbridge in Madrid

Cited by 13 publications

References 27 publications

3D‐printed concrete footbridges: An approach to assess the sustainability performance

3D‐printed concrete footbridges: An approach to assess the sustainability performance

A review of concrete 3D printed structural members

Reduction of the cement content in Selective Cement Activation

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