Exploring Locust Bean Gum as a Robust Binder and Rheology Modifier for Earth Concrete (2024-09)¶

10.24355/dbbs.084-202408021232-0

Maierdan Yierfan, Armistead Samuel, Mikofsky Rebecca, Carcassi Olga, ben Alon Lola, Srubar Wil III, Kawashima Shiho
Contribution - Supplementary Proceedings of the 4^th RILEM International Conference on Concrete and Digital Fabrication

Abstract

This study explores locust bean gum (LBG), a biopolymer stabilizer, to improve the rheological and mechanical properties of earth-based concrete, addressing the need for sustainable and low-carbon construction materials. Microstructural analysis revealed strong binding between LBG and clay particles through a significant mass loss difference between pure kaolinite and kaolinite-LBG washed sample. Rheological investigations demonstrated the ability of LBG to increase yield stress. Notably, the yield stress of the clay suspension increased continuously with LBG concentration. For example, adding 3 % LBG to the mixture increased the static yield stress from 54.5 Pa to 340 Pa, more than a sixfold increase. Finally, the compressive strength tests revealed that a mere 3 % addition of LBG led to around a 13-fold increase in compressive strength, i.e., 0.67 MPa to 8.70 MPa. This exploration highlights the pivotal role of LBG as a dual-functionality agent, acting as a robust binder and a promising rheology modifier, thereby revolutionizing sustainable construction practices reliant on earth-based materials.

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BibTeX

@inproceedings{maie_armi_miko_carc.2024.ELBGaaRBaRMfEC,
  author            = "Yierfan Maierdan and Samuel J. Armistead and Rebecca A. Mikofsky and Olga Beatrice Carcassi and Lola ben Alon and Wil III V. Srubar and Shiho Kawashima",
  title             = "Exploring Locust Bean Gum as a Robust Binder and Rheology Modifier for Earth Concrete",
  doi               = "10.24355/dbbs.084-202408021232-0",
  year              = "2024",
  booktitle         = "Supplementary Proceedings of the 4th RILEM International Conference on Concrete and Digital Fabrication",
  editor            = "Dirk Lowke and Niklas Freund and David Böhler and Friedrich Herding",
}

Formatted Citation

IEEE

Y. Maierdan, “Exploring Locust Bean Gum as a Robust Binder and Rheology Modifier for Earth Concrete”, in Supplementary Proceedings of the 4^th RILEM International Conference on Concrete and Digital Fabrication, 2024. doi: 10.24355/dbbs.084-202408021232-0.

CMOS

Maierdan, Yierfan, Samuel J. Armistead, Rebecca A. Mikofsky, Olga Beatrice Carcassi, Lola ben Alon, Wil III V. Srubar, and Shiho Kawashima. “Exploring Locust Bean Gum as a Robust Binder and Rheology Modifier for Earth Concrete”. In Supplementary Proceedings of the 4^th RILEM International Conference on Concrete and Digital Fabrication, edited by Dirk Lowke, Niklas Freund, David Böhler, and Friedrich Herding, 2024. https://doi.org/10.24355/dbbs.084-202408021232-0.