Development of CO2-activated interface enhancer to improve the interlayer properties of 3D-printed concrete

• Published in: Cement & concrete composites Vol. 162; p. 106122
• Main Authors: Lucen, Hao, Hanxiong, Lyu, Huanghua, Zhang, Shipeng, Zhang, Jianzhuang, Xiao, Sun, Poon Chi
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.09.2025
• Subjects: CO2-Activated interface enhancer; Dicalcium silicate; Interlayer strength; Microstructure; Pore characteristics; Dicalcium silicate; Interlayer strength; Microstructure; CO2-Activated interface enhancer; Pore characteristics

This paper presents an approach to enhance the interlayer properties of 3D-printed concrete (3DPC) by synchronously spraying CO2-activated interface enhancer (CIE) onto the surface of printed concrete filament during the printing process, thus overcoming the inherent limitation of weak interlayer pr...