Rapid early age strength development of in-line activated geopolymer for concrete 3D printing

Article


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
Article Title

Rapid early age strength development of in-line activated geopolymer for concrete 3D printing

ERA Journal ID3470
Article CategoryArticle
AuthorsMuthukrishnan, Shravan, Ramakrishnan, Sayanthan and Sanjayan, Jay
Journal TitleConstruction and Building Materials
Journal Citation406
Article Number133312
Number of Pages13
Year2023
PublisherElsevier
Place of PublicationNetherlands
ISSN0950-0618
Digital Object Identifier (DOI)https://doi.org/10.1016/j.conbuildmat.2023.133312
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0950061823030295
Abstract

The in-line activation using print head mixing technology involves two parts pumping and mixing at the print head. This technology can be applied in geopolymer concrete, where the base mix (precursors, sand and water) and alkaline activators can be pumped as two separate parts and mixed at the print head for activation. While such methods provide prolonged open time, the early age strength development is low since water from the base mix dilutes the activator solution during print head mixing. Besides, choosing an activator solution with high alkalinity to combat the dilution effect reduces the immediate static yield strength development after print head mixing, which is essential for rapid building. Therefore, this study investigates the hydrated lime as an additive in the base mix to overcome the challenge to attain high 1-day compressive strength along with immediate static yield strength development. The effect of hydrated lime dosage on the pumpability (i.e. evolution of viscosity with time), static yield strength development after print head mixing (buildability) and hardened properties were assessed. The optimum hydrated lime dosage of 1 wt% of the precursors exhibited 1-day compressive strength of 20 MPa and static yield strength of 38.8 kPa after 5 min from print head mixing with minimal changes in pumpability of the base mix for up to 6 h. Moreover, the effect of rapid static yield strength development of the printed layers on the interlayer bond strength was assessed with varying cycle times between 5 s and 40 min. It was found that the interlayer bond strength reduced by 63% when the cycle time was increased from 5 s to 40 min, however, the reduction can be decreased to 15% by surface wetting of the previous layers.

KeywordsPumpability; Set-on-demand ; Alkali Activated Concrete ; Hydrated Lime ; Buildability; Interlayer bond strength
ANZSRC Field of Research 2020400505. Construction materials
401401. Additive manufacturing
401602. Composite and hybrid materials
Byline AffiliationsSwinburne University of Technology
Dresden University of Technology, Germany
School of Engineering
Centre for Future Materials
Permalink -

https://research.usq.edu.au/item/z1q2w/rapid-early-age-strength-development-of-in-line-activated-geopolymer-for-concrete-3d-printing

Download files


Published Version
1-s2.0-S0950061823030295-main.pdf
License: CC BY 4.0
File access level: Anyone

  • 31
    total views
  • 28
    total downloads
  • 1
    views this month
  • 3
    downloads this month

Export as

Related outputs

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