3D Concrete Printing - Arnaud Perrot

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Résumé :

Preface
Arnaud PERROT

Chapter 1 3D Concrete Printing: Technologies, Applications and Classifications 1
Arnaud PERROT, Yohan JACQUET and Sofiane AMZIANE

1.1 Introduction: the different facets of printing 1

1.2 3D printing: from digital model to physical object 2

1.2.1 From digital model to print 2

1.2.2 Printing processes 3

1.2.3 Printing processes for cementitious materials 4

1.3 3D concrete printing - application examples 5

1.3.1 Prefabrication 5

1.3.2 On-site printing 8

1.3.3 Toward the democratization of 3D concrete printing? 10

1.4 Classification of concrete printing processes 11

1.4.1 Classification proposed by Duballet and co-authors 11

1.4.2 Classification proposed by RILEM 16

1.4.3 Complementary classification 18

1.5 Printing concrete with alternative binders or without cement? 19

1.6 Conclusion 21

1.7 References 21

Chapter 2 3D Concrete Printing by Extrusion and Filament Deposition 31
Arnaud PERROT and Yohan JACQUET

2.1 Introduction 31

2.2 Major printing families 33

2.2.1 A matter of scale 33

2.2.2 Single- and two-component materials 34

2.2.3 Robotic complexity 35

2.3 Printable materials 36

2.3.1 Material behavior during printing 36

2.3.2 Material flow behavior 38

2.3.3 Material behavior at rest 39

2.3.4 Printing specifications 43

2.4 The main stages in 3D extrusion printing 43

2.4.1 Mixing 43

2.4.2 Pumping 44

2.4.3 Extrusion 46

2.4.4 Filament deposition and local stability 48

2.4.5 Overall structure stability during printing 51

2.4.6 Elastic deformation and printing precision 55

2.4.7 Material curing during and after printing 55

2.5 Conclusion 57

2.6 References 58

Chapter 3 From Laboratory to Practice: Characterizing Fresh and Cured Printed Materials 67
Nicolas DUCOULOMBIER, Victor DE BONO, Fatima Zahraa KACHKOUCH,

Yohan JACQUET and Arnaud PERROT

3.1 Introduction 67

3.2 Characterization of fresh materials 68

3.2.1 Laboratory formulation - specifications 68

3.2.2 Print control in an industrial context 77

3.3 Characterization of hardened materials 85

3.3.1 Specifications 85

3.3.2 Characterization of physical properties 85

3.3.3 Mechanical characterization of printed materials 85

3.4 Durability 91

3.5 Conclusion 93

3.6 References 93

Chapter 4 Alternative Printing Methods for Cementitious Materials 103
Alexandre PIERRE and Arnaud PERROT

4.1 Introduction 103

4.2 Methods with supports 105

4.2.1 In situ printed supports (permanent formwork) 105

4.2.2 Mobile support 109

4.2.3 Sacrificial support 110

4.3 Particle bed methods 115

4.4 Support-free methods 117

4.5 Choice of process 118

4.6 Prospects and opportunities 121

4.6.1 Dissolvable temporary supports 121

4.6.2 Selective binding of aggregates with foams 121

4.6.3 Structural reinforcements 121

4.6.4 Functionally graded materials 122

4.7 Conclusion 123

4.8 References 123

Chapter 5 Structural Applications of 3D Printing 131
Romain MESNIL, Romain DUBALLET and Olivier BAVEREL

5.1 Introduction 131

5.1.1 Structure design 131

5.1.2 Principles of structural design 133

5.1.3 Chapter organization 135

5.2 Assessment of hardened material properties 135

5.2.1 Material or micro-structure? 135

5.2.2 Toward reconciling points of view 137

5.2.3 Orthotropic or isotr...