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Bioinspired Biopolymer Hydrogel Application to Improve Installation Efficiency and Load Carrying Capacity of Piles
  • Park, Suhyuk ;
  • Yum, Jun Hyeok ;
  • Lee, Minhyeong ;
  • Cho, Gye Chun ;
  • Lee, Sojeong ;
  • Chang, Ilhan
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Publication Year
2024-01-01
Journal
Geotechnical Special Publication
Publisher
American Society of Civil Engineers (ASCE)
Citation
Geotechnical Special Publication, Vol.2024-February No.GSP 351, pp.268-277
Mesh Keyword
Adjacent structuresCrosslinkedFrictional resistanceGround improvementImprovement techniqueNoise impactPropertyReal world settingShear-thinningSoil treatments
All Science Classification Codes (ASJC)
Civil and Structural EngineeringArchitectureBuilding and ConstructionGeotechnical Engineering and Engineering Geology
Abstract
Installation of urban piles presents a number of difficulties in terms of noise, vibration, and impact on adjacent structures. The environmentally friendly ground improvement technique known as “biopolymer-based soil treatment” (BPST) is being actively considered in both academic and real-world settings. It is expected that the shear thinning properties of biopolymer hydrogels lessen frictional resistance during pile movement. In addition, trivalent ion-induced crosslinking between soil particles and xanthan gum biopolymer hydrogel improves the interaction between the soil and the pile after pile installation. Through these properties, in this study, the pile skin resistance reduction and pullout resistance enhancement effects induced by biopolymer hydrogel injection and subsequent crosslinking have been assessed. The interface direct shear test was conducted to evaluate the interface shear behavior between sandpaper and soil/treated soil. The model pile was pulled out to evaluate the load carrying capacity of the pile. The load carrying capacity of the biopolymer-treated pile was the smallest. Also, piles in sand and crosslinked biopolymer-treated piles exhibited similar load-displacement curves, especially in the initial displacement. However, in the residual state, the resistance of the pile in the crosslinked biopolymer-treated sand was higher. Through the experimental results, the feasibility of applying biopolymer to increase installation efficiency is reviewed. In addition, it was found appropriate to use the crosslinking method to increase the load carrying capacity.
ISSN
0895-0563
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/37115
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85186679620&origin=inward
DOI
https://doi.org/10.1061/9780784485330.028
Journal URL
http://ascelibrary.org/
Type
Conference
Funding
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2022R1A2C2091517).
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Chang, Il Han장일한
Department of Civil Systems Engineering
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