Experimental study on the effect of chitosan biopolymer on sandy soil stabilization
| Autor: | Pooria Ghadir, Nader Shariatmadari, Akbar A. Javadi, Amiri Tasuji, Mohammad Reza |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
02 engineering and technology 010501 environmental sciences engineering.material complex mixtures 01 natural sciences Chitosan chemistry.chemical_compound 020401 chemical engineering Hydraulic conductivity Soil stabilization Cohesion (geology) 0204 chemical engineering lcsh:Environmental sciences Curing (chemistry) 0105 earth and related environmental sciences lcsh:GE1-350 2. Zero hunger Cement Pulp and paper industry Environmentally friendly 6. Clean water chemistry 13. Climate action engineering Biopolymer |
| Zdroj: | E3S Web of Conferences E3S Web of Conferences, Vol 195, p 06007 (2020) |
| ISSN: | 2267-1242 |
| DOI: | 10.1051/e3sconf/202019506007 |
| Popis: | Due to the environmental impacts of conventional soil stabilization materials, such as cement, ongoing efforts have been carried out by different researchers to find alternative economical materials for substitution. Biopolymers are environmentally friendly materials that are widely used in different geoenvironmental applications such as removal of heavy metals from contaminated soils, reduction of soil hydraulic conductivity, erosion control, and soil improvement. In this research the feasibility of using chitosan biopolymer for sandy soil stabilization has been studied. The effects of biopolymer content, curing time, and curing conditions have investigated using unconfined compression tests. The results indicated that incorporation of chitosan has the potential to increase the interparticle cohesion between the particles and considerable improvement of sandy soil mechanical properties. After initial strengthening of the soil, some strength reduction over time was observed due to the degradation characteristics of the chitosan. With regards to the curing condition, better performances at dry condition compare to the wet and saturated environment were achieved. In addition to soil mechanical properties, the pore plugging effect of chitosan biopolymer on highly permeable sandy soil has been studied in this study. |
| Databáze: | OpenAIRE |
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