Design 3D printing cementitious materials via Fuller Thompson theory and Marson-Percy model

Weng, Yiwei; Li, Ming Yang; Tan, Ming Jen

doi:10.1016/j.conbuildmat.2017.12.112

Cited by 201 publications

(97 citation statements)

References 28 publications

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“…For example, the ratio of water to cement occupies a wide range of values from 0.27 to 0.51 and no limitations can be concluded. The aggregates volume for cementitious material such as concrete and mortar are normally around 60-80% of the total volume of cementitious materials [47]. These values change with the formulation of printable material.…”

Section: State Of the Art And Research Objectivesmentioning

confidence: 99%

“…The rheology of fresh mortar, even though very complex in nature, has been shown to follow the Bingham material model [48]. The rheology is directly related to 3D printing materials since the flow rate is reflected by pumping pressure which is dependent on yield stress [47,49]. Many mortar rheometers have been developed for measuring the rheological properties of fresh mortar using different principles and geometries [50].…”

Section: Materials Distribution Flowabilitymentioning

confidence: 99%

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Experimental Approach for Printability Assessment: Toward a Practical Decision-Making Framework of Printability for Cementitious Materials

et al. 2019

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The objective of this paper is to propose a pre-experimental framework of printability pre-assessment of cementitious materials. This study firstly presents a general review of additive manufacturing in construction and then examines the main characteristic of the material formulation and printability properties based on extrusion technique. This framework comes with experimental tests to determine a qualitative printability index of mixtures. It uses mix-designs reported in the literature to define interval ratio of mixture design to be investigated in this study. The focus was put on two criteria that influence the formulation namely flowability and buildability. Two practiced based tests, mini slump and cone penetrometer, were used to draw the flowability and buildability dimensionless index. The results were analyzed by introducing an optimal printability coefficient and examining their time evolution. An optimal time of printing was determined Toptimal. Finally, a 3D mortar printing system and its operational process are presented. Then, based on the measurement, the optimal mixture is identified and printed in a large-scale geometry.

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Section: State Of the Art And Research Objectivesmentioning

confidence: 99%

Section: Materials Distribution Flowabilitymentioning

confidence: 99%

Experimental Approach for Printability Assessment: Toward a Practical Decision-Making Framework of Printability for Cementitious Materials

et al. 2019

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“…Consequently, research is underway worldwide to develop concrete printing materials applicable to the 3DCP process [2]. Recent studies on such materials have used ordinary Portland cement as basic material and were conducted using silica fume [6][7][8], fly ash [1,9,10], and silica fume and fly ash [10,11], but no work to date has used water-soluble polymers, such as styrene-butadiene rubber (SBR) as modifiers.…”

Section: Introductionmentioning

confidence: 99%

Strength Development Characteristics of SBR-Modified Cementitious Mixtures for 3-Demensional Concrete Printing

Kim¹,

Yeon

Lee

et al. 2019

Sustainability

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The properties of normal cementitious mixtures currently employed to the construction projects cannot be used to the three-dimensional concrete printing technology. This study experimentally investigated the compressive and flexural strength development of styrene-butadiene rubber (SBR)-modified cementitious mixtures for use as basic three-dimensional concrete printing (3DCP) materials. The SBR/cement ratio was a variable of the mix proportion used to produce cast and printed specimens. Experiments were conducted using these specimens to determine the compressive and flexural strength levels of the SBR-modified cementitious mixtures. The results indicated that the compressive strengths of the SBR-modified cementitious mixtures proposed in this study were never less than those of existing 3D concrete printing materials previously introduced for 3DCP applications. It was confirmed that the addition of SBR latex effectively improved the strength of the cementitious mixtures because the relative compressive and flexural strengths increased with increases in the SBR/cement ratio. Moreover, the higher early (i.e., 1-day) strength indicates that the SBR-modified cementitious mixtures would be advantageous to the 3DCP process. However, the compressive and flexural strengths of the printed specimens were weaker than those of the cast specimens.

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“…1, July 2019, pp. 35-41 industrial application [5]. Hence, a user should optimize the material used for reducing cost production [6].…”

Section: Introductionmentioning

confidence: 99%

The Characteristic of Overhang Object to Material Usage on FDM 3D Printing Technology

Bintara

Aminnudin

Prasetiyo

et al. 2019

JMEST

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Fuse Deposition Modeling (FDM) 3D printing is one of additive manufacturing technology which physical 3D model is build up layer by layer. The support structure is almost involved on the process if overhang shape is met on the 3D model. It has main function to prevent the 3D printed model from collapsing. Commonly, the single material source of FDM 3D printer machine is to supply building two structure, structure of main 3D object and support structure. Hence, our goal optimizes the using of support material for reducing the main material usage. Furthermore, the sixteen of variation overhang angle is set to the 3D model. All models are printed into two kind of 3D printed model, printed model with support structure addition and without support addition. The weight of each 3D printed model is measured by weight scale with accuracy of tool is 10 -4 g. Then the quality and the weight of 3D printed model are compared and analyzed. The result shows that the average overweight of 3D printed model with support structure addition is 40.41% than without support structure addition. Furthermore, there are several the 3D printed models without support structure that fail printed on variety model with 0° until 11° of overhang angle. The conclusion of this study is that the support structure can prevent the 3D printed model from collapsing but it does not need be built up if the overhang angle more than 11°.

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Design 3D printing cementitious materials via Fuller Thompson theory and Marson-Percy model

Cited by 201 publications

References 28 publications

Experimental Approach for Printability Assessment: Toward a Practical Decision-Making Framework of Printability for Cementitious Materials

Experimental Approach for Printability Assessment: Toward a Practical Decision-Making Framework of Printability for Cementitious Materials

Strength Development Characteristics of SBR-Modified Cementitious Mixtures for 3-Demensional Concrete Printing

The Characteristic of Overhang Object to Material Usage on FDM 3D Printing Technology

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