Author
Evan Cochran
Bio: Evan Cochran is an academic researcher from University of Southern California. The author has contributed to research in topics: Scale (ratio) & Cementitious. The author has an hindex of 2, co-authored 2 publications receiving 266 citations.
Topics: Scale (ratio), Cementitious
Papers
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TL;DR: In this paper, a framework for performance-based laboratory testing of cementitious mixtures for construction-scale 3D printing is developed, where workability of a fresh "printing mixture" is studied in terms of print quality, shape stability, and printability window.
411 citations
24 Jul 2017
17 citations
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TL;DR: A comprehensive review of the main 3D printing methods, materials and their development in trending applications was carried out in this paper, where the revolutionary applications of AM in biomedical, aerospace, buildings and protective structures were discussed.
Abstract: Freedom of design, mass customisation, waste minimisation and the ability to manufacture complex structures, as well as fast prototyping, are the main benefits of additive manufacturing (AM) or 3D printing. A comprehensive review of the main 3D printing methods, materials and their development in trending applications was carried out. In particular, the revolutionary applications of AM in biomedical, aerospace, buildings and protective structures were discussed. The current state of materials development, including metal alloys, polymer composites, ceramics and concrete, was presented. In addition, this paper discussed the main processing challenges with void formation, anisotropic behaviour, the limitation of computer design and layer-by-layer appearance. Overall, this paper gives an overview of 3D printing, including a survey on its benefits and drawbacks as a benchmark for future research and development.
4,159 citations
TL;DR: In this article, a numerical model was developed to analyse the mechanical behavior of fresh, 3D printed concrete, in the range of 0 to 90 min after material deposition, based on a time-dependent Mohr-Coulomb failure criterion and linear stress-strain behaviour up to failure.
422 citations
TL;DR: In this article, the effects of print-time interval on the inter-layer strength, along with compressive and flexural strengths of extrusion-based 3D printed concrete in different directions were investigated.
322 citations
TL;DR: In this article, the main required concrete states for extrusion and deposition processes are analyzed with respect to required performances and potential admixtures, and possible side effects and incompatibilities are discussed, as well as how they could be unconventionally used for printable concrete purposes.
301 citations
TL;DR: In this article, an environmental friendly cementitious mixture that is compatible with an extrusion-based printing process was proposed, where the authors investigated the six replacement ratio of tailing to sand from 0% to 50% and developed a single nozzle printing system.
300 citations