Investigation on the microstructure of a 3D-printed mortar through a novel leaching-subsidiary tomography
Source abstract
Abstract
The microstructure of a 3D-printed mortar was investigated in present study. To enhance the density contrast between sand and cementitious slurry, a novel leaching strategy was used as an auxiliary method, based on which the spatial dispersion of sands in 3D-printed mortar was rendered. Meanwhile, to alleviate the problem of CT’s limited resolution, X-ray attenuation method (XRAM) was introduced in this study to investigate the spatial distribution of local porosity in 3D-printed mortar. Besides, focusing on single filaments, the upper part of the filaments presented lower sand rate and higher porosity than the lower part, and the difference between the filaments located near the top of 3D-printed mortar was more significant. Finally, based on the sliding method, the interlayer width, average porosity and average sand ratio of 3D-printed mortar were estimated as 640 μm, 21.9% and 43.1%, respectively. The research results would deepen the understanding of 3D-printed concrete.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Innovations in Concrete and Construction Materials · Building materials and conservation · 3D Surveying and Cultural Heritage
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil Engineering, School of Science, Nanjing University of Science & Technology, Nanjing, China
Jian Yan Hua Ce Science and Technology Co., Ltd, Hangzhou, China
Department of Applied Physics, School of Science, Nanjing University of Science & Technology, Nanjing, China
Department of Civil Engineering, Central South University, Changsha, China
Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, Tongji University, Shanghai, China
Funding
National Natural Science Foundation of China · Jiangsu Province Science Foundation · Fundamental Research Fund for the Central Universities · Undergraduate scientific research training program from Nanjing University of Science and Technology
References (42)
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