Abstract
This state of the art review paper aims to discuss the results of a literature survey on possible ways to reinforce printed concrete based on existing reinforcement strategies. Just as conventional concrete, for 3D printed concrete to be suitable for large-scale construction, reinforcement is needed to increase the tensile capacity of concrete members and reduce temperature and shrinkage cracking. Despite efforts that are currently underway, the development of proper reinforcement suitable for printed concrete is still very active on the research agenda. As an initial step for designing suitable reinforcement for printed concrete, the existing reinforcement methods for printed concrete as well as conventional cast concrete from the literature are reviewed and summarized. Through the preliminary evaluation of the suitability and effectiveness of various reinforcement methods, guidelines are proposed to better understand possible solutions to reinforce printed concrete and inspire new practical ideas to fill the current technology void. The conclusions also include the possible improvements of the existing reinforcement methods to be considered in future applications.
Highlights
Contemporary additive manufacturing, known as 3D printing, has been shown to have great potential in many fields, such as mechanical engineering, medical practice, food-producing, and aerospace
One of these efforts concerns the additive manufacturing of concrete structures, known as 3D Printing of Concrete (3DPC), which can significantly upgrade the conventional cast-in-place or precast approaches
The main objective of this paper is to identify from the literature various reinforcement methods approaches that may be suitable for application to 3D printed concrete
Summary
Contemporary additive manufacturing, known as 3D printing, has been shown to have great potential in many fields, such as mechanical engineering, medical practice, food-producing, and aerospace. Over the past two decades, efforts have targeted introducing this technology in building construction. One of these efforts concerns the additive manufacturing of concrete structures, known as 3D Printing of Concrete (3DPC), which can significantly upgrade the conventional cast-in-place or precast approaches. The printing process starts with concrete mixing, pumping the fresh concrete from the mixer through hoses, and extruding the concrete in the form of filament through the nozzle attached to the robotic arm. The movement of the computer-controlled robotic arm determines the geometry of the printed concrete part
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