자연주의적 탐구조사(Naturalistic Inquiry)

Basics of qualitative research: Grounded theory procedures and techniques

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.

Additive manufacturing (3D printing): A review of materials, methods, applications and challenges

The Personal Interview

Theory in Practice: Increasing Professional Effectiveness

Developments in construction-scale additive manufacturing processes

https://www.forumat.net.br/at/sites/default/arq-paginas/4_-_contributing_factors_in_construction_accidents_-_haslam_et_al_2005.pdf

Contributing factors in construction accidents.

This paper presents the experimental results concerning the mix design and fresh properties of a high-performance fibre-reinforced fine-aggregate concrete for printing concrete. This concrete has been designed to be extruded through a nozzle to build layer-by-layer structural components. The printing process is a novel digitally controlled additive manufacturing method which can build architectural and structural components without formwork, unlike conventional concrete construction methods. The most critical fresh properties are shown to be extrudability and buildability, which have mutual relationships with workability and open time. These properties are significantly influenced by the mix proportions and the presence of superplasticiser, retarder, accelerator and polypropylene fibres. An optimum mix is identified and validated by the full-scale manufacture of a bench component.

/pdf/mix-design-and-fresh-properties-for-high-performance-14xj77biiw.pdf

Alistair G.F. Gibb

Papers

Developments in construction-scale additive manufacturing processes

Contributing factors in construction accidents.

Mix design and fresh properties for high-performance printing concrete

Hardened properties of high-performance printing concrete

Freeform construction: mega-scale rapid manufacturing for construction