Computers and Concrete

  • 제31권6호
  • /
  • Pages.501-511
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  • 2023
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Study on engineering properties of xanthan gum reinforced kaolinite

  • Zhanbo Cheng (School of Engineering, University of Warwick) ;
  • Xueyu Geng (School of Engineering, University of Warwick)
  • 투고 : 2021.09.24
  • 심사 : 2023.01.12
  • 발행 : 2023.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

The strengthening efficiency of biopolymer treated soil depends on biopolymer type, concentration ratio, soil type, initial water content, curing time and mixing method. In this study, the physical and mechanical properties of xanthan gum (XG) treated kaolinite were investigated through compaction test, Atterberg limit test, triaxial test and unconfined compression test. The results indicated that the optimum water content (OWC) increased from 30.3% of untreated clay to 33.5% of 5% XG treated clay, while the maximum dry density has a slight increase from 13.96 kg/m3 to 14 kg/m3 of 0.2% XG treated clay and decrease to 2.7 kg/m3 of 5% XG treated clay. Meanwhile, the plastic limit of XG treated clay increased with the increase of XG concentration, while 0.5% XG treated clay can be observed the maximum liquid limit with 79.5%. Moreover, there are the ideal water content about 1.3-1.5 times of the optimum water content achieving the maximum dry density and curing time to obtain the maximum compressive strength for different XG contents, which the UCS is 1.52 and 2.07 times of the maximum UCS of untreated soil for 0.5% and 1% XG treated clay, respectively. In addition, hot-dry mixing can achieve highest UCS than other mixing methods (e.g., dry mixing, wet mixing and hot-wet mixing).

키워드

과제정보

The authors wish to acknowledge the support from the National Natural Science Foundation of China (51608323, 51678319) and this project has received funding from the European Union's Horizon 2020 research and innovation programme Marie Sklodowska-Curie Actions Research and Innovation Staff Exchange (RISE) under grant agreement No. 778360.

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