Organization profile

Introduction / mission

The chair of Structural Design of Concrete Structures provides education aiming to design safe concrete (and masonry) structures, carries out research and pursues strategic internal and external collaborations. The results are published in high quality scientific journals. The chair addresses structural design from a value chain type of perspective. Design, manufacturing and assembling are considered in an integral manner with a focus on innovation to work on a digital transition. Digital technologies, on all levels, are needed to improve on both construction productivity and sustainability in the sector. It is our vision that design, manufacturing and assembling should be studied in an integrated and digital manner. This explains why the chair also hosts the certificate program on construction technology.

Organisational profile

The research is focussed on digital design, digital manufacturing and digital assembling (D3DMA). Digital design is studied on three subsequent levels. On a macro level, the structures of buildings and (small) civil structures like pedestrian bridges are designed using both parametric and generic design tools. Optimisation algorithms, like form finding and topology optimisation are incorporated to safe on natural resources and explore new shapes, always bearing the construction technology in mind. On a meso level concrete components like slabs and walls are studied numerically. Parametric design tools are being developed, based on strut and tie analysis, yield lines and the stringer panel methods. Finally, on a micro scale, discrete FEM analyses are used to study e.g. the pull-out behaviour of reinforcement and fibres. All types of analyses are supported with fundamental experimental research for matters of verification. Finally, digital manufacturing is treated in the certificate program on construction technology.

Concrete printing
All of the above-mentioned research topics come together in the research on 3D Concrete Printing (3DCP). A unique large-scale print facility has been realised and is allocated in the Structures Laboratory. The research on 3DCP comprises three goals.
The first goal is to work on the robustness of the print process itself. The materials properties of fresh concrete are studied experimentally, and the results are embedded in a finite element analysis to predict the maximum print speed to avoid (plastic) yield strains or overall instability of the printed structures.
The second goal is to improve on the materials properties by additives like fibres and accelerators and innovative types of structural reinforcement. Fibres and other additives are embedded with a special device developed at TU/e near the printer nozzle, just prior to extruding the concrete filaments. This allows for future optimization to functionally graded structures since not only concrete can be places where it is needed most, but also the concrete quality and functionality can be adjusted on demand on every position of the structure in an industrial and controlled manner. Another tool has been developed to automatically embed a reinforcement wire and research is performed to further improve this system. The third level of research is to monitor the print process by (non-destructive) sensors using e.g. ultra sound and optic eyes and work towards printers with algorithms based on deep learning (AI).
The output of recent research is already being applied in real projects, in close collaboration with industrial partners. So far, a cycling bridge has been printed, a second one is in a research phase and the first out of five houses of project Milestone will be ready for the inhabitants in June 2019. More information on 3DCP and the projects can be found on the site: TUe.nl/3DConcretePrinting.

Fingerprint Dive into the research topics where Concrete Structures is active. These topic labels come from the works of this organisation's members. Together they form a unique fingerprint.

Concretes Engineering & Materials Science
Printing Engineering & Materials Science
Reinforcement Engineering & Materials Science
Precast concrete Engineering & Materials Science
Brick Engineering & Materials Science
Carbon fibers Engineering & Materials Science
Concrete construction Engineering & Materials Science
Clay Engineering & Materials Science

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Profiles

No photo of Zeeshan Y. Ahmed

Zeeshan Y. Ahmed

Person: Prom. : doctoral candidate (PhD)

20112019
Photo of Gabi Bertram

Gabi Bertram

Person: OWP : University Teacher / Researcher

19952015
No photo of Derk H. Bos

Derk H. Bos

Person: Prom. : doctoral candidate (PhD)

20192019

Research Output 1982 2019

10 Citations (Scopus)
27 Downloads (Pure)

An approach to develop printable strain hardening cementitious composites

Chaves Figueiredo, S., Romero Rodríguez, C., Ahmed, Z., Bos, D. H., Xu, Y., Salet, T., Çopuroglu, O., Schlangen, E. & Bos, F., 5 May 2019, In : Materials & Design. 169, 17 p., 107651.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
Strain hardening
Rheology
Yield stress
Composite materials
Printing
2 Citations (Scopus)
5 Downloads (Pure)

Digital concrete: a review

Wangler, T., Roussel, N., Bos, F., Salet, T. & Flatt, R., Sep 2019, In : Cement and Concrete Research. 123, 17 p., 105780.

Research output: Contribution to journalArticleAcademicpeer-review

Concretes
Fabrication
Rheology
Hydration
Printing
4 Citations (Scopus)
96 Downloads (Pure)

Ductility of 3D printed concrete reinforced with short straight steel fibers

Bos, F. P., Bosco, E. & Salet, T. A. M., 3 Apr 2019, In : Virtual and Physical Prototyping. 14, 2, p. 160-174 15 p.

Research output: Contribution to journalArticleAcademicpeer-review

Open Access
File
Ductility
Steel fibers
Reinforced Concrete
Straight
Reinforced concrete

Equipment

3D Concrete Printing

Theo A.M. Salet (Manager)

Concrete Structures

Facility/equipment: Research lab

Printing
Concretes
Structural design
Architectural design
Concrete construction

Prizes

Additive manufacturing of functional construction materials on-demand

Sandra S. Lucas (Recipient), Jos Brouwers (Recipient) & Q.L. (Qingliang) Yu (Recipient), 18 Nov 2019

Prize: NWOOtherScientific

3D printers
Intelligent materials
Functional materials
Civil engineering
Printing

Best Proceedings Paper

Freek P. Bos (Recipient), 12 Sep 2018

Prize: OtherCareer, activity or publication related prizes (lifetime, best paper, poster etc.)Scientific

Concretes
Testing

NWO-TTW Open Technology Program

Freek P. Bos (Recipient), Theo Salet (Recipient), Akke Suiker (Recipient) & Erik Schlangen (Recipient), Apr 2019

Prize: NWOOtherScientific

Strain hardening
Composite materials

Activities 1998 2019

Transportation Research Record (Journal)

Freek P. Bos (Peer reviewer)
15 Jul 2019

Activity: Publication peer-review and editorial work typesPublication peer-reviewScientific

Transportation Research Record (Journal)

Freek P. Bos (Peer reviewer)
15 Jul 2019

Activity: Publication peer-review and editorial work typesPublication peer-reviewScientific

Composites Part B: Engineering (Journal)

Freek P. Bos (Peer reviewer)
6 Jul 2019

Activity: Publication peer-review and editorial work typesPublication peer-reviewScientific

Press / Media

A 3D printout you could call home

Theo A.M. Salet

23/11/19

1 item of Media coverage

Press/Media: Expert Comment

A Printout You Could Call Home

Theo A.M. Salet

10/11/19

1 item of Media coverage

Press/Media: Expert Comment

A 3D Print-Out You Could Call Home

Theo A.M. Salet

8/11/19

10 items of Media coverage

Press/Media: Expert Comment

Student theses

3D concrete printing: research and development of a structural reinforcement system for 3D printing with concrete

Author: Jutinov, E., 31 Oct 2017

Supervisor: Salet, T. (Supervisor 1), Bos, F. (Supervisor 2) & Ahmed, Z. (Supervisor 2)

Student thesis: Master

File

3MO-TION: 3DCP movement and circulation

Author: Zambotti, A., 30 Apr 2019

Supervisor: Kuit, B. (Supervisor 1), van Hoof, S. (Supervisor 2) & Ahmed, Z. (Supervisor 2)

Student thesis: Master

Accelerating early strength and stiffness development of a Portland cement-based mortar for 3D printing

Author: van der Meijde, G., 28 May 2019

Supervisor: Wolfs, R. (Supervisor 1), Suiker, A. (Supervisor 2) & Salet, T. (Supervisor 2)

Student thesis: Master

File