3D printing concrete containing thermal responsive gelatin: Towards cold environment applications

Zhengyao Qu; Qingliang Yu; Ghim Ping Ong; Ruth Cardinaels; Lin Ke; Yi Long; Guoqing Geng

doi:10.1016/j.cemconcomp.2023.105029

3D printing concrete containing thermal responsive gelatin: Towards cold environment applications

Zhengyao Qu (Corresponding author), Qingliang Yu (Corresponding author), Ghim Ping Ong, Ruth Cardinaels, Lin Ke, Yi Long, Guoqing Geng (Corresponding author)

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Construction with cementitious materials via 3D printing requires a highly thixotropic behavior, which is a challenge for construction industry. In this work a facile and low-cost gelatin-modified thermal responsive smart cement paste formulation was developed for extrusion-based 3D printing in cold environments The paste's temperature-dependent rheological properties were characterised, and the underlying mechanism was explored. At room temperature, the modified paste presents similar rheological properties as the reference cement paste. After resting for 10 min at 5 °C, the modified cement paste has a yield stress of 1900 Pa which is 10 times that of the reference paste. Moreover, the mechanical properties of the modified paste are comparable to or higher than that of the reference paste at later age. Our approach may inspire a facile manipulation of paste rheology through temperature, which facilitates smartly controlled 3D concrete printings.

Original language	English
Article number	105029
Number of pages	10
Journal	Cement and Concrete Composites
Volume	140
DOIs	https://doi.org/10.1016/j.cemconcomp.2023.105029
Publication status	Published - Jul 2023

Bibliographical note

Funding Information:
This research is supported by the MOE Tier 1 project in Singapore under WBS R-302-000-242-133 . The authors would like to thank Prof. Leo Pel at Eindhoven University of Technology for his help on the 1 H-NMR tests. Qasim Khan, Yannick Choy Hin Ng and Dawn Wong at National University of Singapore are acknowledged for providing support on the rheology tests.

Funding

This research is supported by the MOE Tier 1 project in Singapore under WBS R-302-000-242-133 . The authors would like to thank Prof. Leo Pel at Eindhoven University of Technology for his help on the 1 H-NMR tests. Qasim Khan, Yannick Choy Hin Ng and Dawn Wong at National University of Singapore are acknowledged for providing support on the rheology tests.

Keywords

3D printing concrete
Hydrogel
Rheology control
Thermal response

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title = "3D printing concrete containing thermal responsive gelatin: Towards cold environment applications",

abstract = "Construction with cementitious materials via 3D printing requires a highly thixotropic behavior, which is a challenge for construction industry. In this work a facile and low-cost gelatin-modified thermal responsive smart cement paste formulation was developed for extrusion-based 3D printing in cold environments The paste's temperature-dependent rheological properties were characterised, and the underlying mechanism was explored. At room temperature, the modified paste presents similar rheological properties as the reference cement paste. After resting for 10 min at 5 °C, the modified cement paste has a yield stress of 1900 Pa which is 10 times that of the reference paste. Moreover, the mechanical properties of the modified paste are comparable to or higher than that of the reference paste at later age. Our approach may inspire a facile manipulation of paste rheology through temperature, which facilitates smartly controlled 3D concrete printings.",

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note = "Funding Information: This research is supported by the MOE Tier 1 project in Singapore under WBS R-302-000-242-133 . The authors would like to thank Prof. Leo Pel at Eindhoven University of Technology for his help on the 1 H-NMR tests. Qasim Khan, Yannick Choy Hin Ng and Dawn Wong at National University of Singapore are acknowledged for providing support on the rheology tests. ",

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AU - Ke, Lin

AU - Long, Yi

AU - Geng, Guoqing

N1 - Funding Information: This research is supported by the MOE Tier 1 project in Singapore under WBS R-302-000-242-133 . The authors would like to thank Prof. Leo Pel at Eindhoven University of Technology for his help on the 1 H-NMR tests. Qasim Khan, Yannick Choy Hin Ng and Dawn Wong at National University of Singapore are acknowledged for providing support on the rheology tests.

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AB - Construction with cementitious materials via 3D printing requires a highly thixotropic behavior, which is a challenge for construction industry. In this work a facile and low-cost gelatin-modified thermal responsive smart cement paste formulation was developed for extrusion-based 3D printing in cold environments The paste's temperature-dependent rheological properties were characterised, and the underlying mechanism was explored. At room temperature, the modified paste presents similar rheological properties as the reference cement paste. After resting for 10 min at 5 °C, the modified cement paste has a yield stress of 1900 Pa which is 10 times that of the reference paste. Moreover, the mechanical properties of the modified paste are comparable to or higher than that of the reference paste at later age. Our approach may inspire a facile manipulation of paste rheology through temperature, which facilitates smartly controlled 3D concrete printings.

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3D printing concrete containing thermal responsive gelatin: Towards cold environment applications

Abstract

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