Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multiscale Study of Soil Stabilization Using Bacterial Biopolymers
Conventional methods of soil stabilization employing materials, such as lime or cement, have considerable environmental penalties due to their high embodied energy. Alternatives such as biopolymers can significantly alleviate this problem. This paper is the first attempt to reveal the basic mechanism of stabilizing sand using bacterial biopolymer by conducting investigations spanning from microscopic to macroscopic scales. Xanthan gum, a bacterial biopolymer, has been microscopically characterized both as a stand-alone binder and with varying proportions of clay reinforcement. Sand columns have been produced using xanthan gum as the binder with varying quantities of clay. The biopolymer stabilized samples were characterized by strength and water absorption. Although xanthan gum was able to bind the sand, exposure to moisture considerably affected its strength. The addition of clay significantly improved the performance by reinforcing the polymer. The mechanism of stabilization has been revealed through advanced microscopic investigations using scanning electron microscopy, nanoindentation, and atomic force microscopy. The study reveals the potential of bacterial polymerization as a means of sustainable soil stabilization.
Multiscale Study of Soil Stabilization Using Bacterial Biopolymers
Conventional methods of soil stabilization employing materials, such as lime or cement, have considerable environmental penalties due to their high embodied energy. Alternatives such as biopolymers can significantly alleviate this problem. This paper is the first attempt to reveal the basic mechanism of stabilizing sand using bacterial biopolymer by conducting investigations spanning from microscopic to macroscopic scales. Xanthan gum, a bacterial biopolymer, has been microscopically characterized both as a stand-alone binder and with varying proportions of clay reinforcement. Sand columns have been produced using xanthan gum as the binder with varying quantities of clay. The biopolymer stabilized samples were characterized by strength and water absorption. Although xanthan gum was able to bind the sand, exposure to moisture considerably affected its strength. The addition of clay significantly improved the performance by reinforcing the polymer. The mechanism of stabilization has been revealed through advanced microscopic investigations using scanning electron microscopy, nanoindentation, and atomic force microscopy. The study reveals the potential of bacterial polymerization as a means of sustainable soil stabilization.
Multiscale Study of Soil Stabilization Using Bacterial Biopolymers
Ramachandran, Asha Latha (Autor:in) / Dubey, Anant Aishwarya (Autor:in) / Dhami, Navdeep Kaur (Autor:in) / Mukherjee, Abhijit (Autor:in)
04.06.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Efficacy of Cross-Linking of Biopolymers in Soil—Stabilization
| Springer Verlag | 2024
Clay Soil Stabilization Using Xanthan Gum and Sodium Alginate as Biopolymers
| Springer Verlag | 2023
Soil strengthening using thermo-gelation biopolymers
| Online Contents | 2015
A Review on Biopolymers as an Eco-Friendly and Sustainable Solution for Soil Stabilization
| Springer Verlag | 2024