3D Concrete Printing: Review of Mix Design, Reinforcement Strategy, Nozzle Geometry

Document Type : Original Article

Authors

1 Associate Professor, Department of Civil Engineering, Faculty of Technical & Engineering, Imam Khomeini International University, Qazvin, Iran

2 Ph.D. student, Department of Civil Engineering, Faculty of Technical & Engineering, Imam Khomeini International University, Qazvin, Iran

3 Masters of Science, School of Environment, College of Engineering, University of Tehran, Tehran, Iran

Abstract

The use of 3D printing concrete in construction applications is one of the most innovative and challenging fields, combining traditional construction knowledge with digital technologies. The focus on this area has increased due to removing the molds, reducing the cost, needed human resources, and other important advantages. There are many challenges such as rheological requirements, bonding between layers, materials used, their reinforcement, and anisotropic behaviors in this industry which has a special potential in fast and mass construction, and complex architectures. Throughout history up to current times, the performance of the built structures has always been the result of the interaction between steel and concrete. According to the practical applications of this technology, manufacturing compatible materials, using reinforcing systems such as fibers and steel rebars, and maintaining proper interaction between them, are fascinating subjects that attract the attention of researchers in this field. The examples of the research processes along with their analysis are reviewed in this article. since this article was written to introduce this technology and its challenges, it provides a source of inspiration, for getting to know the audience as much as possible, with conflict goals of producing suitable concrete to improve the ability of printing and its quality.

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Main Subjects


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