Determination of Shear Strength of Organic Soil in Kashmir
Keywords:
Shear Strength, Peat, Organic Soil, Jammu and Kashmir, SEMAbstract
As a conference and tourist resort hub, Kashmir is one of India’s most rapidly expanding states. There is a lot of building work going on right now. It's also projected that there will be a lot more building in the future. However, there has been relatively little research on the engineering qualities of Kashmir valley’s soils. Shear strength, or the capacity to resist sliding along internal surfaces inside a soil mass, is one of the most essential engineering qualities of soil. All stability assessments in geotechnical engineering, whether they be for foundations, slopes of cuttings, or earth dams, require a fundamental understanding of this soil engineering feature. The shear strength parameters of Kashmir’s alluvial soil are going to be investigated in this study. The shear strength parameters (c and Ф) are investigated using disturbed soil samples that have been remoulded with various densities and water contents to imitate field conditions. Infrastructural developments have now progressed in Jammu and Kashmir and strength evaluation of peat remains complex and uncertain. Considering failures of infrastructures resulting from inappropriate measurement of peat shear strength, this research paper present on the shear strength of peat and the modification of existing testing methods to assess its strength in the laboratory and on the field. The initial part of this research is the laboratory testing of peat specimens. Scanning electron microscopy (SEM), triaxial tests are conducted to characterise the morphology, compressibility and shear strength properties of peat. The results of the microstructural and compressibility analysis are presented together with the triaxial stress-strain analysis. The analysed results show the effect of decomposition on peat and shear strength characteristics.
Downloads
References
Ajlouni, M. A. (2000). Geotechnical properties of organic soil and related engineering problems. Ph.D Thesis. University of Illinois at Urbana–Champaign, Urbana, Ill.
ASTM D2435. (2004). Standard test methods for one dimensional consolidation properties of soils using incremental loading. ASTM International.
Boylan, N., & Long, M. (2009). Development of a direct simple shear apparatus for organic soil soils. Geotechnical Testing Journal, 32(2), 126–138.
Chung, S. F., Randolph, M. F., & Schneider, J. A. (2006). Effect of Penetration Rate on Penetrometer Resistance in Clay. Offshore (Conroe, TX), (September), 1188–1196.
Cotecchia, F., & Chandler, R. J. (1997). The influence of structure on the pre-failure behaviour of a natural clay. Géotechnique, 47(3), 523–544.
Den Haan, E. J., & Grognet, M. (2014). A large direct simple shear device for the testing of organic soil at low stresses. Géotechnique Letters, 4(4), 283–288.
Hanzawa, H., Nutt, N., Lunne, T., Tang, Y. X., & Long, M. (2007). a Comparative Study Between the Ngi Direct Simple Shear Apparatus and the Mikasa Direct Shear Apparatus. Soils and Foundations, 47(1), 47–58.
Helenelund, K. V. (1972). Influence of sampling disturbance on the engineering properties of organic soil samples. In Proceedings of the 4th International Organic soil Congress - Volume II: Geotechnics (pp. 229–240). Otaniemi, Finland.
Hobbs, N. B. (1986). Mire morphology and the properties and behaviour of some British and foreign organic soils. Quarterly Journal of Engineering Geology and Hydrogeology, 19(1), 7– 80.
Krage, C. P., DeJong, J. T., & Wilson, D. W. (2014). Variable Penetration Rate Cone Testing in Sands with Fines. In Geo Congress 2014 Technical Papers (pp. 170–179).
Landva, A. (2006). Characterization of Escuminac organic soil and construction on organic soilland. In Characterisation and Engineering Properties of Natural Soils (pp. 2135–2191). Singapore: Taylor and Francis.
Lee, J. S., Seo, S. Y., & Lee, C. (2015). Geotechnical and geophysical characteristics of muskeg samples from Alberta, Canada. Engineering Geology, 195, 135141.
Salgado, R. (2012). The mechanics of cone penetration : Contributions from experimental and theoretical studies. Geotechnical and Geophysical Site Characterization 4, 131– 153. https://doi.org/10.1201/b13251-9
Yamaguchi, H., Ohira, Y., Kogure, K., & Mori, S. (1985). Undrained Shear Characteristics of Normally Consolidated Organic soil Under Triaxial Compression and Extension Conditions. Soils and Foundations, 25(3), 1–18. https://doi.org/http://doi.org/10.3208/sandf1972.25.3_1
Zhang, L., & O ’kelly, B. C. (2013). Constitutive models for organic soil - a review. In Proceedings of the 12th International Conference on Computational Plasticity – Fundamentals and Applications (COMPLAS XII) (pp. 1294–1304). Barcelona, Spain: International Center for Numerical Methods in Engineering (CIMNE).
Zulkifley, M. T. M., Ng, T. F., Raj, J. K., Hashim, R., Ghani, A., Shuib, M. K., & Ashraf, M. A. (2013). Definitions and engineering classifications of tropical lowland organic soils. Bulletin of Engineering Geology and the Environment, 72(3– 4), 547–553. https://doi.org/10.1007/s10064-013-0520-5
Zwanenburg, C., Den Haan, E. J., Kruse, G. A. M., & Koelewijn, A. R. (2012). Failure of a trial embankment on organic soil in Booneschans, the Netherlands. Géotechnique, 62(6), 479–490. https://doi.org/10.1680/geot.9.P.094
Amuda, Akeem & Hasan, Alsidqi & Datu Unoi, Dayang Norfaranina & Linda, Siti. (2018). STRENGTH AND COMPRESSIBILITY CHARACTERISTICS OF AMORPHOUS TROPICAL PEAT. 14. 85-96. 10.6310/jog.201906_14(2).4.
Wang, Qiong & ye, Xinyu & Wang, Shanyong & Sloan, Scott & Sheng, Daichao. (2016). Degree of saturation effect on the grout-soil interface shear strength of soil nailing. E3S Web of Conferences. 9. 15007. 10.1051/e3sconf/20160915007.