Properties and microstructure of extrusion-based 3D printing mortar containing a highly flowable, rapid set grout

dc.contributor.author Wang, Kejin
dc.contributor.author Wang, Kejin
dc.contributor.author Taylor, Peter C.
dc.contributor.author Laflamme, Simon
dc.contributor.author Sritharan, Sri
dc.contributor.author Qin, Hantang
dc.contributor.other Electrical and Computer Engineering
dc.contributor.other Civil, Construction and Environmental Engineering
dc.contributor.other Center for Nondestructive Evaluation (CNDE)
dc.date.accessioned 2021-11-11T17:32:25Z
dc.date.available 2021-11-11T17:32:25Z
dc.date.issued 2021-11
dc.description.abstract In this study, a highly flowable, rapid set crack repair grout powder (CRG) was used to facilitate mix design of 3D printing mortar. Various mortar mixtures with different amounts of CRG were evaluated for setting time, flowability, and printability. For the first time, pore/micro-structures of printed filaments and their bonds were examined in detail. The results have provided a better understanding of the anisotropic mechanical behavior of printed mortar. Plausible explanations have been made for the observations that printed samples displayed lower compressive but higher flexural strength than cast samples. It is demonstrated that CRG can be simply used as a raw material component to expedite the 3D printing concrete mix design process since finding the balance among various admixtures (e.g., water-reducing agent, thixotropic agent, accelerator, etc.) is not required.
dc.description.comments This is a manuscript of an article published as Wi, Kwangwoo, Kejin Wang, Peter C. Taylor, Simon Laflamme, Sri Sritharan, and Hantang Qin. "Properties and microstructure of extrusion-based 3D printing mortar containing a highly flowable, rapid set grout." Cement and Concrete Composites (2021): 104243. DOI: 10.1016/j.cemconcomp.2021.104243. © 2021 Elsevier Ltd. Posted with permission. CC BY-NC-ND
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/Dw88lOWw
dc.language.iso en_US
dc.publisher Elsevier Ltd.
dc.source.uri https://doi.org/10.1016/j.cemconcomp.2021.104243 *
dc.subject 3D printing concrete
dc.subject Grout
dc.subject Anisotropic behavior
dc.subject Strength
dc.subject Pore structure
dc.subject Microstructure
dc.subject.disciplines DegreeDisciplines::Engineering::Civil and Environmental Engineering
dc.title Properties and microstructure of extrusion-based 3D printing mortar containing a highly flowable, rapid set grout
dc.type Article
dspace.entity.type Publication
relation.isAuthorOfPublication f9071b81-012f-4b6d-a040-9083bc33535c
relation.isAuthorOfPublication 84547f08-8710-4934-b91e-ba5f46ab9abe
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