TY - JOUR
T1 - 3D concrete printing for structural applications
AU - Bos, Freek
AU - Ahmed, Zeeshan
AU - Rodriguez, Claudia Romero
AU - Chaves Figueiredo, Stefan
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Recent years have seen a rapid growth of additive manufacturing methods for concrete construction. Potential advantages include reduced material use and cost, reduced labor, mass customization and CO2 footprint reduction. None of these methods, however, has yet been able to produce additively manufactured concrete with material properties suitable for structural applications, i.e. ductility and (flexural) tensile strength. In order to make additive manufacturing viable as a production method for structural concrete, a quality leap had to be made. In the project ‘3D Concrete Printing for Structural Applications’, 3 concepts have been explored to achieve the required structural performance: applying steel fiber reinforcement to an existing printable concrete mortar, developing a strain-hardening cementitious composite based on PVA fibers, and embedding high strength steel cable as reinforcement in the concrete filament. Whereas the former produced only an increase in flexural tensile strength, but limited post-peak resistance, the latter two provided promising strain hardening behavior, thus opening the road to a wide range of structural applications of 3D printed concrete.
AB - Recent years have seen a rapid growth of additive manufacturing methods for concrete construction. Potential advantages include reduced material use and cost, reduced labor, mass customization and CO2 footprint reduction. None of these methods, however, has yet been able to produce additively manufactured concrete with material properties suitable for structural applications, i.e. ductility and (flexural) tensile strength. In order to make additive manufacturing viable as a production method for structural concrete, a quality leap had to be made. In the project ‘3D Concrete Printing for Structural Applications’, 3 concepts have been explored to achieve the required structural performance: applying steel fiber reinforcement to an existing printable concrete mortar, developing a strain-hardening cementitious composite based on PVA fibers, and embedding high strength steel cable as reinforcement in the concrete filament. Whereas the former produced only an increase in flexural tensile strength, but limited post-peak resistance, the latter two provided promising strain hardening behavior, thus opening the road to a wide range of structural applications of 3D printed concrete.
KW - Concrete
KW - Fiber
KW - Methods
KW - Reinforcement
KW - Structural
UR - http://www.scopus.com/inward/record.url?scp=85077912003&partnerID=8YFLogxK
U2 - 10.7480/spool.2019.2.4366
DO - 10.7480/spool.2019.2.4366
M3 - Article
AN - SCOPUS:85077912003
SN - 2215-0897
VL - 6
SP - 5
EP - 10
JO - Spool
JF - Spool
IS - 2
ER -