TY - JOUR
T1 - Barbed-wire reinforcement for 3D concrete printing
AU - Hojati, Maryam
AU - Memari, Ali M.
AU - Zahabi, Mehrzad
AU - Wu, Zhengyu
AU - Li, Zhanzhao
AU - Park, Keunhyoung
AU - Nazarian, Shadi
AU - Duarte, José P.
N1 - Funding Information:
The authors gratefully acknowledge the financial support from the ENGineering for Innovation & ENtrepreneurship (ENGINE) Grants by the College of Engineering (COE) at the Pennsylvania State University . The authors are also appreciative of the invaluable assistance of Mr. Nate Watson, Jamie Heilman, and Drs. Sven G. Bilén and Aleksandra Radlińska. All 3D-printing and mechanical tests were performed at Building Components and Envelopes Research Lab in the Architectural Engineering Department and Structures lab in Sackett Building at the Pennsylvania State University.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/9
Y1 - 2022/9
N2 - 3D-printing has been growing in acceptance in the construction industry owing to its transformative potential in concrete materials. One of the main challenges for its further adoption is the integration of reinforcement given the difficulty of incorporating steel rebars and the formation of cold joints between filaments. This study proposes the use of barbed wires, fencing wires with sharp thorn-like projections, as a reinforcing component to improve tensile capacity and bond between printed filaments. Results indicated that incorporating barbed wire into 3D-printed concrete increases overall mechanical performance (e.g., moment capacity and bond strengths up to 363% and 71%, respectively, compared to plain 3D-printed concrete). This improvement can be attributed to the twisting of wires and the unique geometry of the 4-point barbs. The proposed barb-wire reinforcement method demonstrates the feasibility of in-process reinforcing during 3D-printing and can be further advanced to achieve full automation of the printing and reinforcement processes.
AB - 3D-printing has been growing in acceptance in the construction industry owing to its transformative potential in concrete materials. One of the main challenges for its further adoption is the integration of reinforcement given the difficulty of incorporating steel rebars and the formation of cold joints between filaments. This study proposes the use of barbed wires, fencing wires with sharp thorn-like projections, as a reinforcing component to improve tensile capacity and bond between printed filaments. Results indicated that incorporating barbed wire into 3D-printed concrete increases overall mechanical performance (e.g., moment capacity and bond strengths up to 363% and 71%, respectively, compared to plain 3D-printed concrete). This improvement can be attributed to the twisting of wires and the unique geometry of the 4-point barbs. The proposed barb-wire reinforcement method demonstrates the feasibility of in-process reinforcing during 3D-printing and can be further advanced to achieve full automation of the printing and reinforcement processes.
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U2 - 10.1016/j.autcon.2022.104438
DO - 10.1016/j.autcon.2022.104438
M3 - Article
AN - SCOPUS:85132743489
SN - 0926-5805
VL - 141
JO - Automation in Construction
JF - Automation in Construction
M1 - 104438
ER -