Effects of malonic acid crosslinked starch for soil strength improvement

The strengthening behavior of crosslinked starch using malonic acid is examined in this study. Since the conventional binding materials used in construction engineering practices have been shown to be environmentally hazardous, the use of eco-friendly and biological approaches (e.g. microbial induced calcite precipitation, biopolymer-based soil treatment) has been studied in recent years. Among such methods, biopolymers have a large variety of possible applications in the field of construction engineering. Biopolymers can enhance soil strength, reduce soil hydraulic conductivity, improve erosion resistance, and even promote vegetation growth. However, most of the biopolymers studied have shown several limitations and challenges for their reliable use. The use of crosslinking may help alter specific properties of biopolymers for soil enhancement. In this study, the strengthening behavior of crosslinked starch using malonic acid was examined. Various parameters for the crosslinking effect were measured and their effect on the soil strength was observed. Results showed that the binding strength of starch could be enhanced for soil strengthening with the use of crosslinking but was highly sensitive to the duration of the applied heat.

• Record URL:
  https://doi.org/10.1016/j.trgeo.2021.100653
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S2214391221001434
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/22143912
• Supplemental Notes:
  • © 2021 Published by Elsevier Ltd. Abstract reprinted with permission of Elsevier.
• Authors:
  • Im, Jooyoung
  • Chang, Ilhan
  • Cho, Gye-Chun
• Publication Date: 2021-11

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Serial:
  • Transportation Geotechnics
  • Volume: 31
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 2214-3912
  • Serial URL: http://www.sciencedirect.com/science/journal/22143912

Subject/Index Terms

• TRT Terms: Binders; Biological materials; Compressive strength; Polymers; Soil stabilization
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 01786867
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 29 2021 3:40PM