TY - JOUR
T1 - Mechanical properties of 3D printed mortar cured by CO2
AU - Wang, Dianchao
AU - Xiao, Jianzhuang
AU - Sun, Bochao
AU - Zhang, Shipeng
AU - Poon, Chi Sun
N1 - Funding Information:
The financial support from the National Natural Science Foundation of China (No: 52078358 , 52208284 ), the National Key R&D Program of China ( 2022YFE0198300 ), the GCCRN Core Project 11, the Postdoctoral International Exchange Program of China ( YJ20200140 ), Shanghai Jianfeng Yichang Engineering Technology Co., Ltd. , and Hong Kong Innovation and Technology Fund (No: ITP/024/22NP ) are highly acknowledged.
Funding Information:
The financial support from the National Natural Science Foundation of China (No: 52078358, 52208284), the National Key R&D Program of China (2022YFE0198300), the GCCRN Core Project 11, the Postdoctoral International Exchange Program of China (YJ20200140), Shanghai Jianfeng Yichang Engineering Technology Co. Ltd., and Hong Kong Innovation and Technology Fund (No:ITP/024/22NP) are highly acknowledged.
Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/5
Y1 - 2023/5
N2 - Three-dimensional (3D) printing technology has received significant attention in construction building areas, and CO2 curing has been proven to be an effective method to enhance the properties of cementitious materials and sequestrate CO2. In this study, the mechanical properties of 3D printed mortar (3DPM) which had been subjected to CO2 curing were investigated. The effects of curing time and the interlayer bonding types on the mechanical properties were discussed. The results show that appropriate CO2 curing improved the mechanical properties of hardened 3DPM, especially the early age property, and the enhancement showed significant anisotropy in different test directions. In addition, the carbonation depths of the interlayers were higher than that of printed strips. Increasing carbonation time reduced the differences between the interlayer and strips’ carbonation depths. Moreover, the carbonation extent of 3DPM was evaluated, and it was found that with an appropriate printing setting, the maximum carbonation ingression of 24% was attained in 24 h CO2 curing.
AB - Three-dimensional (3D) printing technology has received significant attention in construction building areas, and CO2 curing has been proven to be an effective method to enhance the properties of cementitious materials and sequestrate CO2. In this study, the mechanical properties of 3D printed mortar (3DPM) which had been subjected to CO2 curing were investigated. The effects of curing time and the interlayer bonding types on the mechanical properties were discussed. The results show that appropriate CO2 curing improved the mechanical properties of hardened 3DPM, especially the early age property, and the enhancement showed significant anisotropy in different test directions. In addition, the carbonation depths of the interlayers were higher than that of printed strips. Increasing carbonation time reduced the differences between the interlayer and strips’ carbonation depths. Moreover, the carbonation extent of 3DPM was evaluated, and it was found that with an appropriate printing setting, the maximum carbonation ingression of 24% was attained in 24 h CO2 curing.
KW - 3D printed mortar (3DPM)
KW - Anisotropy
KW - Carbonation ingression
KW - CO curing
KW - Interlayer
KW - Mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=85149444688&partnerID=8YFLogxK
U2 - 10.1016/j.cemconcomp.2023.105009
DO - 10.1016/j.cemconcomp.2023.105009
M3 - Journal article
AN - SCOPUS:85149444688
SN - 0958-9465
VL - 139
JO - Cement and Concrete Composites
JF - Cement and Concrete Composites
M1 - 105009
ER -