Development of 3D printable engineered cementitious composites with ultra-high tensile ductility for digital construction
By Binrong Zhu, Jinlong Pan, B. Nematollahi, Zhenxing Zhou, Yangxi Zhang, J. Sanjayan. Materials & Design (1980-2015), 2019
272 citations recorded by the source corpus.
Abstract The current 3D concrete printing (3DCP) technology is limited by the reinforcing methods. Conventional steel reinforcement is hard to be incorporated in the 3DCP process. To overcome this limitation, this study aims to develop 3D-printable engineered cementitious composites (ECCs) exhibiting ultra-high tensile strain capacity of more than 8%, which can be used for digital construction of ‘self-reinforced’ concrete structures, reducing the reliance on the conventional steel reinforcement. Different volume fractions of polyethylene fibers (1%, 1.5% and 2%) were used to reinforce the ECC matrix. The fresh properties (including the workability, rheological properties and buildability) and the hardened properties (including the compressive and flexural strengths, and the uniaxial tensile performance), along with the microstructure of the developed 3D printable ECCs were experimentally investigated. Conventionally mold-cast ECCs were also prepared and tested for comparison purposes. The results showed that the developed 3D printable PE-ECCs exhibited strong strain-hardening behavior with the tensile strength and tensile strain capacity of up to 5.7 MPa and 11.4%, respectively. In addition, the results showed that the 3D printed PE-ECCs exhibited superior tensile performance to the conventionally mold-cast PE-ECC counterparts. This finding is in good agreement with the results of the microstructural analysis.
Subfields: Automotive Engineering, Building and Construction
View Paper: https://www.semanticscholar.org/paper/e4b5cc58a4aa918f0fe142946de8288e18cddb67
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Automotive Engineering
- J. Sanjayan
- B. Nematollahi
- Fred Bos
- V. Mechtcherine
- Richard A. Buswell
- R. Wolfs
- Kequan Yu
- Victor C. Li
In Building and Construction
Citations in the corpus
- Integrating reinforcement in digital fabrication with concrete: A review and classification framework (2021, methodology): “[55] reported the development of printable SHCC reinforced by different percentages of PE fibres, exhibiting very high tensile strength and tensile strain capacity of up to 5.”
- 3D-printable engineered cementitious composites (3DP-ECC): Fresh and hardened properties (2021, background): “2 demonstrate that the tensile properties, including the tensile strength and ductility of printed ECC, are comparable or higher than those of cast ECC, which is attributed to the enhanced fiber alignment during mixture delivery and filament extrusion processes [16,18,19].”