Documents

  • Untitled-9

    Final published version, 1 MB, PDF-document

DOI

In conventional concrete, replacing high-volume (more than 45%) of ordinary Portland cement (OPC) by supplementary cementitious materials (SCMs) is not a novel CO2 reduction method, whereas rarely in 3D printable concrete. This study attempts to explore the feasibility of using SCMs in 3D printable concrete. Initially, the existing binder mixes, required fresh properties and a research method of 3D printable concrete are investigated by reviewing the relevant papers. Additionally, the constraints and opportunities of using SCMs in 3D printable concrete are illustrated and summarized. Finally, it has been found that up to 45% of cement can be replaced by a blend of fly ash and silica fume. The essential fresh properties of 3D printable concrete include extrudability, workability, open time, buildability and structural build-up, which are influenced by the binder mix, particle size distribution, water to binder ratio, binder to aggregate ratio, admixture addition, the dosage of reinforced-fibers, etc. On the other hand, there are many limitations to develop SCMs-based 3D printable concrete, such as few relevant studies, a lack of the certificated standard, massive related-parameters and the shortage of common SCMs. For the first three problems, it can be solved with the development of 3D printable concrete. For the last one, calcined clay is one potential alternative for developing sustainable 3D printable concrete in the areas where are in short supply of fly ash and silica fume.
Original languageEnglish
Title of host publicationFirst RILEM International Conference on Concrete and Digital Fabrication – Digital Concrete 2018
EditorsTimothy Wangler, Robert J. Flatt
PublisherSpringer
Chapter25
Pages269-276
Number of pages8
ISBN (Electronic)978-3-319-99519-9
ISBN (Print)978-3-319-99518-2
DOIs
Publication statusPublished - 2018
Event1st RILEM International Conference on Concrete and Digital Fabrication - ETH-Zurich, Zurich, Switzerland
Duration: 10 Sep 201812 Sep 2018
Conference number: 1
http://digitalconcrete2018.ethz.ch/

Publication series

NameRILEM bookseries
Publisherspringer
Volume19
ISSN (Print)2211-0844
ISSN (Electronic)2211-0852

Conference

Conference1st RILEM International Conference on Concrete and Digital Fabrication
CountrySwitzerland
CityZurich
Period10/09/1812/09/18
Internet address

ID: 47211882