Investigating PCM encapsulated NaOH additive for set-on-demand in 3D concrete printing

Article

Kanagasuntharam, Sasitharan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2024. "Investigating PCM encapsulated NaOH additive for set-on-demand in 3D concrete printing." Cement and Concrete Composites. 145. https://doi.org/10.1016/j.cemconcomp.2023.105313
Article Title

Investigating PCM encapsulated NaOH additive for set-on-demand in 3D concrete printing

ERA Journal ID21082
Article CategoryArticle
AuthorsKanagasuntharam, Sasitharan, Ramakrishnan, Sayanthan and Sanjayan, Jay
Journal TitleCement and Concrete Composites
Journal Citation145
Article Number105313
Number of Pages12
Year2024
PublisherElsevier
Place of PublicationUnited Kingdom
ISSN0958-9465
1873-393X
Digital Object Identifier (DOI)https://doi.org/10.1016/j.cemconcomp.2023.105313
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0958946523003876
AbstractThis study investigates the print head activation of an encapsulated additive to attain on-demand setting in 3D concrete printing for buildability enhancement. Sodium hydroxide (NaOH) is considered as a set accelerating additive, and it is encapsulated using a phase change material (PCM). The encapsulated NaOH is added during the initial mixing stage and the mix is heated at the print head to release the NaOH, which subsequently reacts with cementitious materials to attain the on-demand setting of the printed layer. The dosage of NaOH was varied from 0 to 5 wt% of the cement to determine the optimum dosage for buildability enhancement. The results showed that the static yield strength of the printable concrete after the print head activation increased with the NaOH dosage, however, this has resulted in reducing the compressive strength of the mixes. The fresh and hardened properties of the mixes with encapsulated NaOH were compared with the mix with nano-clay to assess two buildability enhancement approaches (set-on-demand vs traditional). It was found that the buildability enhancement using nano-clay was limited by pumpability constraints, whereas the activation of encapsulated NaOH was limited by compressive strength reductions.
KeywordsBuildability; Concrete 3D printing ; Stiffening control ; Phase change material ; Set-on-demand ; Thermal intervention
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 20204005. Civil engineering
Byline AffiliationsSwinburne University of Technology
Centre for Future Materials
Permalink -

https://research.usq.edu.au/item/z5v2z/investigating-pcm-encapsulated-naoh-additive-for-set-on-demand-in-3d-concrete-printing

Log in to edit

Download files

Published Version
1-s2.0-S0958946523003876-main.pdf
License: CC BY-NC-ND
File access level: Anyone

  • 7
    total views
  • 1
    total downloads
  • 1
    views this month
  • 0
    downloads this month

Export as

Related outputs

The ambient and elevated temperature performance of hemp fibre reinforced alkali-activated cement foam: Effects of fibre dosage and alkali treatment
Dhasindrakrishna, K, Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2023. "The ambient and elevated temperature performance of hemp fibre reinforced alkali-activated cement foam: Effects of fibre dosage and alkali treatment." Journal of Building Engineering. 76. https://doi.org/10.1016/j.jobe.2023.107131
3D concrete printing of eco-friendly geopolymer containing brick waste
Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2023. "3D concrete printing of eco-friendly geopolymer containing brick waste." Cement and Concrete Composites. 138. https://doi.org/10.1016/j.cemconcomp.2023.104943
Rapid early age strength development of in-line activated geopolymer for concrete 3D printing
Muthukrishnan, Shravan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2023. "Rapid early age strength development of in-line activated geopolymer for concrete 3D printing." Construction and Building Materials. 406. https://doi.org/10.1016/j.conbuildmat.2023.133312
Effect of Magnetorheological additives on the buildability of 3D concrete printing
Kanagasuntharam, Sasitharan, Ramakrishnan, Sayanthan, Muthukrishnan, Shravan and Sanjayan, Jay. 2023. "Effect of Magnetorheological additives on the buildability of 3D concrete printing." Journal of Building Engineering. 74. https://doi.org/10.1016/j.jobe.2023.106814
In-line activation of cementitious materials for 3D concrete printing
Ramakrishnan, Sayanthan, Kanagasuntharam, Sasitharan and Sanjayan, Jay. 2022. "In-line activation of cementitious materials for 3D concrete printing." Cement and Concrete Composites. 131. https://doi.org/10.1016/j.cemconcomp.2022.104598
Enhancing the properties of foam concrete 3D printing using porous aggregates
Pasupathy, Kirubajiny, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2022. "Enhancing the properties of foam concrete 3D printing using porous aggregates." Cement and Concrete Composites. 133. https://doi.org/10.1016/j.cemconcomp.2022.104687
In-line activation of geopolymer slurry for concrete 3D printing
Muthukrishnan, Shravan, Ramakrishnan, Sayanthan and Sanjayan, Jay. 2022. "In-line activation of geopolymer slurry for concrete 3D printing." Cement and Concrete Research. 162. https://doi.org/10.1016/j.cemconres.2022.107008
Use of geopolymer concrete in column applications
Lokuge, Weena, Sanjayan, Jay and Setunge, Sujeeva. 2015. "Use of geopolymer concrete in column applications." 27th Biennial National Conference of the Concrete Institute of Australia (Concrete 2015) in conjunction with the 69th RILEM Week: Construction Innovations, Research into Practice. Melbourne, Australia 30 Aug - 02 Sep 2015 Australia.
Stress-strain model for high strength concrete confined by FRP
Lokuge, W. P., Setunge, S. and Sanjayan, J. G.. 2011. "Stress-strain model for high strength concrete confined by FRP." Fragomeni, Sam, Venkatesan, Srikanth, Lam, Nelson T. K. and Setunge, Sujeeva (ed.) 21st Australasian Conference on the Mechanics of Structures and Materials (ACMSM 21). Melbourne, Australia 07 - 10 Dec 2010 Leiden, Netherlands. https://doi.org/10.1201/b10571-85
Modelling eccentrically loaded high-strength concrete columns
Lokuge, Weena, Setunge, Sujeeva and Sanjayan, J. G.. 2003. "Modelling eccentrically loaded high-strength concrete columns." Magazine of Concrete Research. 55 (4), pp. 331-341.
Triaxial test results of high-strength concrete subjected to cyclic loading
Lokuge, Weena, Sanjayan, J. G. and Setunge, Sujeeva. 2003. "Triaxial test results of high-strength concrete subjected to cyclic loading." Magazine of Concrete Research. 55 (4), pp. 321-329.
Constitutive model for confined high strength concretes subjected to cyclic loading
Lokuge, Weena, Sanjayan, J. G. and Setunge, Sujeeva. 2004. "Constitutive model for confined high strength concretes subjected to cyclic loading." Journal of Materials in Civil Engineering. 16 (4), pp. 297-305. https://doi.org/10.1061/~ASCE!0899-1561~2004!16:4~297!
Stress-strain model for laterally confined concrete
Lokuge, Weena P., Sanjayan, J. G. and Setunge, Sujeeva. 2005. "Stress-strain model for laterally confined concrete." Journal of Materials in Civil Engineering. 17 (6), pp. 607-616. https://doi.org/10.1061/ASCE0899-1561200517:6607