<p></p><p>Additive Manufacturing (AM) allows
for the creation of elements with novel forms and functions. Utilizing AM
in development of components of civil infrastructure allows for achieving more advanced, innovative, and unique performance characteristics. The
research presented in this dissertation is focused on development of a better understanding
of the fabrication challenges and opportunities in AM of cement-based materials. Specifically, challenges related to printability and opportunities offered by
3D-printing technology, including ability to fabricate intricate structures and
generate unique and enhanced mechanical responses have been explored. Three aspects
related to 3D-printing of cement-based materials were investigated. These aspects include: fresh stability of 3D-printed elements in relation to materials
rheological properties, microstructural characteristics of the interfaces
induced during the 3D-printing process, and the mechanical response of 3D-printed
elements with bio-inspired design of the materials’ architecture. This research
aims to contribute to development of new pathways to obtain stability in freshly
3D-printed elements by determining the rheological properties of material that
control the ability to fabricate elements in a layer-by-layer manner, followed
by the understanding of the microstructural features of the 3D-printed hardened
cement paste elements including the interfaces and the pore network. This
research also introduces a new approach to enhance the mechanical response of
the 3D-printed elements by controlling the spatial arrangement of individual
filaments (i.e., materials’ architecture) and by harnessing the weak interfaces
that are induced by the 3D-printing process. </p><br><p></p>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/12413036 |
| Date | 16 June 2020 |
| Creators | Mohamadreza Moini (8922227) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/BUILDABILITY_AND_MECHANICAL_PERFORMANCE_OF_ARCHITECTURED_CEMENT-BASED_MATERIALS_FABRICATED_USING_A_DIRECT-INK-WRITING_PROCESS/12413036 |
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