Evaluation of Early-Age Concrete Structural Build-Up for 3D Concrete Printing by Oscillatory Rheometry

Silva, Wilson Ricardo Leal da; Fryda, H.; Bousseau, Jean-Noël; Andreani, Pierre-Antoine; Andersen, Tine

doi:10.1007/978-3-030-20216-3_4

Cited by 13 publications

(3 citation statements)

References 9 publications

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“…Most of these techniques rely on the incorporation at the printhead level of either a chemical accelerator able to modify the silicate/aluminate balance and accelerate one of these hydration reactions, or an organic flocculant able to bridge the finest particles in the system. They could also rely on the mixing of the material with an alternative binder such as aluminate-based substances [50]. The former strategy (dispersion) involves amounts of products below a very few percent while the latter (mixing) often involves amounts above 10% by volume.…”

Section: Dispersion In the Printheadmentioning

confidence: 99%

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Extrusion-based additive manufacturing with cement-based materials – Production steps, processes, and their underlying physics: A review

Mechtcherine

Bos

Perrot

et al. 2020

Cement and Concrete Research

353

127

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This article offers a comprehensive overview of the underlying physics relevant to an understanding of materials processing during the various production steps in extrusion-based 3D Concrete Printing (3DCP). Understanding the physics governing the processes is an important step toward the purposeful design and optimization of 3DCP systems as well as their efficient and robust process control. For some processes, analytical formulas based on the relevant physics have already enabled reasonable predictions with respect to material flow behavior and buildability, especially in the case of relatively simple geometries. The existing research in the field was systematically compiled by the authors in the framework of the activities of the RILEM Technical Committee 276 "Digital fabrication with cementbased materials". However, further research is needed to develop reliable tools for the quantitative analysis of the entire process chain. To achieve this, experimental efforts for the characterization of material properties need to go hand in hand with comprehensive numerical simulation.

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Section: Dispersion In the Printheadmentioning

confidence: 99%

“…If oscillatory rheometry and ultrasound test measurements are reliable methods to estimate the evolution of a material's elastic modulus over time, they require expensive and sensitive devices that are not easy to implement in a printing environment [50].…”

Section: Measurement Procedures Of Rheological and Early Age Propertiesmentioning

confidence: 99%

Extrusion-based additive manufacturing with cement-based materials – Production steps, processes, and their underlying physics: A review

Mechtcherine

Bos

Perrot

et al. 2020

Cement and Concrete Research

353

127

View full text Add to dashboard Cite

show abstract

“…FDM is one of the most popular AM techniques and involves heating printing material and extruding continuous filaments of thermoplastic polymers and other materials to create objects layer by layer. The heat helps to fuse the layers together and harden them [21]. Material jetting involves dropping material onto predetermined locations to create a prototype.…”

Section: Introductionmentioning

confidence: 99%

A Review of the Additive Manufacturing Techniques Used in the Construction Area

Onutu,

Polcovnicu,

Taranu

et al. 2023

IJMMT

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: Additive manufacturing (3D printing) of fiber reinforced mortar/concrete has developed in the last decade as a potential alternative to the classic construction techniques that are used in civil and infrastructure applications. Compared to cast concrete, this technology offers several benefits, including faster prototyping and manufacturing, increased quality, reduced waste and high customization. In this article, there is presented a review of the 3D printing technologies, equipments, mixtures, reinforcements and trending applications that were carried out by various research teams. Also, there are discussed the mix design principles, the role of the superplasticizer and viscosity modifying agents and other factors that may modify the pumpability, flowability, extrudability and buildability of 3D mortar/concrete materials. An important part of this review is dedicated to the desideratum of developing and providing solutions for affordable houses. In this respect, the 3D printed constructions costs are substantially lower compared to the traditional alternatives, being in the same time environmentally sustainable and compatible with the latest European and international plans for climate change.

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Numerical Model Describing the Early Age Behavior of 3D Printed Concrete – Work in Progress

et al. 2020

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A numerical model used to predict the behavior of 3D printed concrete in the early age phase up until the point of collapse is presented. An incremental creep model for the material including aging and temperature effects is suggested. Furthermore, kinematic nonlinear effects are included in order to predict instability. The input parameters to the numerical model are determined through an optimization process where the displacement error between a finite element method (FEM) model and digital image correlation (DIC) measurements from an actual 3D print are minimized. A simplified (current state) version of the suggested numerical model was used to predict at how many layers a specific 3D print collapsed, with an error of 58%. This was concluded to be expected, since the numerical model is not fully implemented yet.

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Evaluation of Early-Age Concrete Structural Build-Up for 3D Concrete Printing by Oscillatory Rheometry

Cited by 13 publications

References 9 publications

Extrusion-based additive manufacturing with cement-based materials – Production steps, processes, and their underlying physics: A review

Extrusion-based additive manufacturing with cement-based materials – Production steps, processes, and their underlying physics: A review

A Review of the Additive Manufacturing Techniques Used in the Construction Area

Numerical Model Describing the Early Age Behavior of 3D Printed Concrete – Work in Progress

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