- Conference Paper
The long-term performance of 3D printed concrete structures is essential and among the various durability issues, frost damage is one of key importance, especially in cold locations such as Switzerland. For 3D printed materials, the presence of layer interfaces and cold joints is a potential issue in terms of frost resistance. Therefore, after extrusion, both cast and printed samples were prepared, and they were subjected to 300 cycles of freeze-thaw in accordance with ASTM C666. It was found that printed samples have lower resistance to freeze-thaw conditions compared to their cast counterparts. The lower resistance of the printed samples could be attributed to the heterogeneity in the microstructure, in particular to the higher capillary porosity in the interface region compared to that in the bulk. The higher capillary porosity could be confirmed based on the sorptivity test results. Show more
Book titleThird RILEM International Conference on Concrete and Digital Fabrication
Journal / seriesRILEM Bookseries
Pages / Article No.
Subject3D printing; Frost damage; Interface; Capillary porosity
Organisational unit03891 - Flatt, Robert J. / Flatt, Robert J.
02284 - NFS Digitale Fabrikation / NCCR Digital Fabrication
-- - NCCR Digital Fabrication (SNF)
141853 - Digital Fabrication - Advanced Building Processes in Architecture (SNF)
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