Browse > Article

Behavior Analysis of Particle Crushing about Sabkha Layer under Hydrotest  

Kim, Seokju (Dept. of Civil Engineering, Kumoh National Institute Technology)
Han, Heuisoo (Dept. of Civil Engineering, Kumoh National Institute Technology)
Publication Information
Journal of the Korean GEO-environmental Society / v.14, no.9, 2013 , pp. 57-65 More about this Journal
Abstract
Carbonate sands can be crushed under low confining pressure to achieve high compressibility. So particle crushing has significant influence on characteristics of strength and deformation. Trial embankment and hydrotest are conducted on Sabkha layer, consisting of carbonate sand to build tank structure. In this paper the settlement behavior was analyzed from each test. Particle crushing happened from 80 to 170kPa stress under compression test, and calcium was detected from chemical test. The test result came out Sabkha soil was very weak and easy to be crushing. About trial embankment test, particle crushing was not happen, and then extinction of pore water pressure and settlements were finished just during 2 days. On the other hand, the long-term settlement was happened in hydrotest. So the two test results did not correspond to each other. If loading stress is higher than yielding stress, instant settlement and secondary compression settlement are happened as a result of the particle crushing.
Keywords
Sabkha; Trial embankment; Hydrotest; Particle crushing; Carbonate sand;
Citations & Related Records
연도 인용수 순위
  • Reference
1 API 650.(2007), Welded tanks for oil storage, Eleventh Edition, American Petroleum Institute, Washington, U.S.A., pp. 7-7.
2 Coop, M. R.(1990), The mechanics of uncemented carbonate sands, Geotechnique Vol. 40, No. 4, pp. 607-626.   DOI
3 Golightly, C. R. and Hyde, A. F. L.(1988), Some fundamental properties of carbonate sands, International Conference on Calcareous Cediments, Perth, Australia, Vol. 1, pp. 173-184.
4 Ismael, N. F.(1993), Laboratory and field leaching tests on coastal salt-bearing soils, Journal of Geotechnical Engineering, Vol. 119, Issue, 3, pp. 453-470.   DOI
5 Kwag, J. M., Ochiai, H. and Yasufuku, N.(1999), Yielding stress characteristics of carbonate sand in relation to individual particle fragmentation strength, Engineering for Calcareous Sediments, Balkema, Rotterdam, pp. 79-86.
6 Lee, K. L. and Seed, H. B.(1967), Drained strength characteristics of sands, Journal of the Soil Mechanics and Foundations Division, Vol. 93, No. 6, pp. 117-141.
7 Lee, K. L. and Farhoomand, I.(1967), Compressibility and crushing of granular soil in anisotropic triaxial compression, Canadian Geotechnical Journal, Vol. 4, No. 1, pp. 68-86.   DOI
8 Miura, N. and O-hara, S. N.(1979), Particle crushing of a decomposed granite soil under shear stresses, Soil and Foundations, Vol. 19, No. 3, pp. 1-14.
9 Terzaghi, K., Peck, R. B. and Mesri, G.(1996), Soil mechanics in engineering practice 3rd Edition, John Wiley and Sons, New York, pp. 161-208.