Can Superabsorbent Polymers Be Used as Rheology-Modifiers for Cementitious Materials in the Context of 3D Concrete Printing (2023-02)¶

10.1016/j.conbuildmat.2023.130777

Chen Yu, Liang Minfei, Zhang Yu, Li Zhenming, Šavija Branko, Schlangen Erik, Çopuroğlu Oğuzhan
Journal Article - Construction and Building Materials, Vol. 371

Abstract

Autogenous shrinkage may be a critical issue concerning the use of limestone-calcined clay-cement (LC3) in highperformance concrete and 3D printable cementitious materials, which have relatively low water to binder (W/B) ratio. Adding an internal curing agent, i.e., superabsorbent polymer (SAP), could be a viable solution in this context. However, employing SAP (without adding additional water) may also influence the fresh properties of LC3 composites by increasing yield stress and viscosity, which may be beneficial for 3D printability. Therefore, this study attempts to use SAP as a rheology modifying admixture with the aim of investigating the impact of SAP on flow behavior, structural build-up, hydration kinetics, compressive strength, and autogenous shrinkage of LC3 pastes with a fixed W/B (0.3). In addition, hydroxypropyl methylcellulose (a typical rheology/viscosity modifier in 3D printable cementitious materials) was also employed in two mixtures to compare their effects. Results show that adding SAP increases the dynamic yield stress and the apparent viscosity, as well as structural build-up and hydration, but decreases the compressive strength at 3, 7 and 28 days. Furthermore, using SAP (especially 0.2 wt % SAP) not only promotes the early-age expansion but also effectively mitigates the autogenous shrinkage of LC3 pastes for up to 7 days. Overall, the obtained results indicated that SAP could act as a promising rheology modifier for the development of 3D printable cementitious materials.

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9 References

10 Citations

BibTeX

@article{chen_lian_zhan_li.2023.CSPBUaRMfCMitCo3CP,
  author            = "Yu Chen and Minfei Liang and Yu Zhang and Zhenming Li and Branko Šavija and Erik Schlangen and Oğuzhan Çopuroğlu",
  title             = "Can Superabsorbent Polymers Be Used as Rheology-Modifiers for Cementitious Materials in the Context of 3D Concrete Printing",
  doi               = "10.1016/j.conbuildmat.2023.130777",
  year              = "2023",
  journal           = "Construction and Building Materials",
  volume            = "371",
}

Formatted Citation

IEEE

Y. Chen, “Can Superabsorbent Polymers Be Used as Rheology-Modifiers for Cementitious Materials in the Context of 3D Concrete Printing”, Construction and Building Materials, vol. 371, 2023, doi: 10.1016/j.conbuildmat.2023.130777.

CMOS

Chen, Yu, Minfei Liang, Yu Zhang, Zhenming Li, Branko Šavija, Erik Schlangen, and Oğuzhan Çopuroğlu. “Can Superabsorbent Polymers Be Used as Rheology-Modifiers for Cementitious Materials in the Context of 3D Concrete Printing”. Construction and Building Materials 371 (2023). https://doi.org/10.1016/j.conbuildmat.2023.130777.