Abstract
This study focuses on one of the bottlenecks facing the concrete 3D printing technology, the lack of proper bonding between the two adjacent layers of 3D printed concrete. Herein, a new polymer consisting of black carbon and sulfur was used to glue the two layers together. The experimental results, verified via molecular dynamics and density functional theory calculations, showed a considerable increase in the interlayer bonding strength. Two-fold rise in interlayer tensile strength as well as chemical cohesion depicted by scanning electron microscopy proves this approach to be successful in providing enhanced bonding between two adjacent printed mortar layers without hindering the printing process. The improvement arises from different types of forces in the interlayer region of modified samples, compared to that of the interlayer region of original sample. The uniform surface provided by the hardened polymer is a good substrate for the top layer in addition to extending the time gap between printing layers. This novel method can accelerate the automation of the construction industry, while reducing the costs in terms of both human labor and capital.
| Original language | English |
|---|---|
| Pages (from-to) | 112-119 |
| Number of pages | 8 |
| Journal | Cement and Concrete Composites |
| Volume | 99 |
| DOIs | |
| Publication status | Published - 1 May 2019 |
Keywords
- 3D printing concrete
- Interlayer interaction
- Interlayer strength
- Molecular dynamics
- Sulfur-black carbon polymer
Cite this
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A novel method to enhance the interlayer bonding of 3D printing concrete : an experimental and computational investigation. / Hosseini, Ehsan; Zakertabrizi, Mohammad; Korayem, Asghar Habibnejad; Xu, Guanzhong.
In: Cement and Concrete Composites, Vol. 99, 01.05.2019, p. 112-119.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - A novel method to enhance the interlayer bonding of 3D printing concrete
T2 - an experimental and computational investigation
AU - Hosseini, Ehsan
AU - Zakertabrizi, Mohammad
AU - Korayem, Asghar Habibnejad
AU - Xu, Guanzhong
PY - 2019/5/1
Y1 - 2019/5/1
N2 - This study focuses on one of the bottlenecks facing the concrete 3D printing technology, the lack of proper bonding between the two adjacent layers of 3D printed concrete. Herein, a new polymer consisting of black carbon and sulfur was used to glue the two layers together. The experimental results, verified via molecular dynamics and density functional theory calculations, showed a considerable increase in the interlayer bonding strength. Two-fold rise in interlayer tensile strength as well as chemical cohesion depicted by scanning electron microscopy proves this approach to be successful in providing enhanced bonding between two adjacent printed mortar layers without hindering the printing process. The improvement arises from different types of forces in the interlayer region of modified samples, compared to that of the interlayer region of original sample. The uniform surface provided by the hardened polymer is a good substrate for the top layer in addition to extending the time gap between printing layers. This novel method can accelerate the automation of the construction industry, while reducing the costs in terms of both human labor and capital.
AB - This study focuses on one of the bottlenecks facing the concrete 3D printing technology, the lack of proper bonding between the two adjacent layers of 3D printed concrete. Herein, a new polymer consisting of black carbon and sulfur was used to glue the two layers together. The experimental results, verified via molecular dynamics and density functional theory calculations, showed a considerable increase in the interlayer bonding strength. Two-fold rise in interlayer tensile strength as well as chemical cohesion depicted by scanning electron microscopy proves this approach to be successful in providing enhanced bonding between two adjacent printed mortar layers without hindering the printing process. The improvement arises from different types of forces in the interlayer region of modified samples, compared to that of the interlayer region of original sample. The uniform surface provided by the hardened polymer is a good substrate for the top layer in addition to extending the time gap between printing layers. This novel method can accelerate the automation of the construction industry, while reducing the costs in terms of both human labor and capital.
KW - 3D printing concrete
KW - Interlayer interaction
KW - Interlayer strength
KW - Molecular dynamics
KW - Sulfur-black carbon polymer
UR - http://www.scopus.com/inward/record.url?scp=85062895977&partnerID=8YFLogxK
U2 - 10.1016/j.cemconcomp.2019.03.008
DO - 10.1016/j.cemconcomp.2019.03.008
M3 - Article
VL - 99
SP - 112
EP - 119
JO - Cement and Concrete Composites
JF - Cement and Concrete Composites
SN - 0958-9465
ER -