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Additive manufacturing utilising cement-based materials can potentially remove the technological\/economic barriers associated with innovative architectural\/structural shapes which are not suitable for conventional formworks adopted for concrete material. However, in the \u201cfree-form\u201d digital fabrication with concrete, the mechanical properties prediction of the material in the fresh state is essential for controlling both the element deformations and overall stability during printing. In this paper, the authors explore the critical aspects related to the determination of the early-age creep properties of a 3D printable cement-based material, particularly investigating such a behaviour at different resting times. The experimental results are used to calibrate the Burgers\u2019 analytical model to consider both the elastic and the viscous response of the 3D printable mortar investigated in the fresh state. The visco-elastic model is validated by comparing the analytical total strain vs time curve with the corresponding experimental counterpart replicating the layer-by-layer stacking process in the 3D concrete printing process. It was found that the Burgers\u2019 model represents a valuable numerical approach to evaluate the overall accumulation of layer deformation of a 3D printed element, since it is capable of taking into account the time dependency due to the time gap and the variable material stiffness over the process time.<\/jats:p>","DOI":"10.1617\/s11527-021-01800-z","type":"journal-article","created":{"date-parts":[[2021,10,29]],"date-time":"2021-10-29T17:02:54Z","timestamp":1635526974000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Early-age creep behaviour of 3D printable mortars: Experimental characterisation and analytical modelling"],"prefix":"10.1617","volume":"54","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1619-1190","authenticated-orcid":false,"given":"Laura","family":"Esposito","sequence":"first","affiliation":[]},{"given":"Lorenzo","family":"Casagrande","sequence":"additional","affiliation":[]},{"given":"Costantino","family":"Menna","sequence":"additional","affiliation":[]},{"given":"Domenico","family":"Asprone","sequence":"additional","affiliation":[]},{"given":"Ferdinando","family":"Auricchio","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2021,10,29]]},"reference":[{"key":"1800_CR1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cemconres.2018.05.006']","author":"R Buswell","year":"2018","unstructured":"Buswell R, de Silva WRL, Jones SZ, Dirrenberger J (2018) 3D printing using concrete extrusion: a roadmap for research. 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