Experimental Research of Concrete Temperature-Distribution During Large-Scale On-Site 3D Printing Based on Infrared-Thermal-Imaging (2024-12)¶

On-site 3D printing offers the possibility of on-site concrete construction towards intelligence. However, the on-site 3D printing process faces the challenge of monitoring the variable temperature distribution and the mechanism of its effect on concrete. Here, infrared thermal imaging is used to monitor and analyze the temperature distribution patterns of concrete during large-scale on-site 3D printing tests at variable ambient temperatures. The results indicate that the temperature of the concrete has certain variations during the delivery process, and the maximum value of the temperature increases to 6.5% from the pumping equipment to the print head. In addition, there are significant differences in the temperature distribution patterns of the different printed layers, while the temperature within one layer is rather uniform.