Abstract
Because of its angularity, crushability, and high void ratio, calcareous gravelly soil has peculiar geotechnical properties. A series of large-scale direct laboratory shear tests was conducted on calcareous gravelly soil taken from coral reefs in the South China Sea. This study aimed to investigate the shear characteristics of calcareous gravelly soil under conditions of varying gradation, water content, density, and mineral composition. The experimental results revealed the extremely different mechanical properties of calcareous gravelly soil compared to common non-cohesive soil: calcareous gravelly soil has greater apparent cohesion, larger friction angle, and lower softening value than quartz sand. The friction angle increases with dry density, while the apparent cohesion increases with the median particle size (D 50) of the soil. After shear failure, the apparent cohesion decreases significantly from the peak value, but friction angle decreased slightly. Grouting can be employed to reinforce foundations and enhance slopes consisting of calcareous gravelly soil at the early stage of shear failure. This study intends to provide reference information for engineering constructions on coral reefs and report new findings on coarse-grained soil.
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References
Alba JL, Audibert JM (1999) Pile design in calcareous and carbonaceous granular materials, an historic overview. In: The second international conference on engineering for calcareous sediments, Manama, Bahrain, vol 1. Balkema, Rotterdam, pp 29–44
Angemeer J, Carlson E, Klick JH (1973) Techniques and results of offshore pile load testing in the calcareous sands. In: The 5th annual offshore technology conference, Houston, Texas
ASTM Standard D 2487-00 (2016) standard practice for classification of soil for engineering purposes (unified soil classification system), annual Book of ASTM Standards, ASTM International, West Conshohocken
Brandes HG (2011) Simple shear behavior of calcareous and quartz sands. Geotech Geol Eng 29(1):113–126
Brandes HG, Seidman J (2008) Dynamic and static behavior of calcareous sands. In: Proceedings of the eighteenth international offshore and polar engineering conference. Vancouver, BC, Canada, July 6–11
Celestino TB, Mitchell JD (1983) Behavior of carbonate sands for foundations of offshore structures. In: Proceedings Brazil Offshore ‘83, Rio de Janeiro, pp 85–102
Chen QC (2003) Biodiversity code of Nansha Islands (in Chinese). Science, Beijing, pp 62–69
Chen HY (2005) Study of the inner pore in calcareous sand (in Chinese). Dissertation for the Master of geotechnical engineering. Institute of Rock & Soil Mechanics. Chinese Academy of Sciences, P.R. China
Cullity BD (1978) Elements of X-ray diffraction. Addison-Wesley, Reading
Fioravante V, Giretti D, Jamiolkowski M (2013) Small strain stiffness of carbonate Kenya Sand. Eng Geol 161:65–80
Ladd RS (1978) Preparing test specimens using undercompaction. Geotech Test J ASTM 1:16–23
Mooer DM, Reynolds RC (1997) X-ray diffraction and the identification and analysis of clay minerals. Oxford University Press, New York
Nauroy JF, Brucy F, Le Tirant P (1988) Skin friction of piles in calcareous sands. Proc Int Conf Calcareous Sands, Perth, pp 239–244
Ngan-Tillard D, Haan J, Laughton D, Mulder A, van der Kolff AN (2009) Index test for the degradation potential of carbonate sands during hydraulic transportation. Eng Geol 108:54–64
Ohno S, Ochiai H, Yasufuku N (1999) Estimation of pile settlement in calcareous sands. In: Al-Shafei KA (ed) Engineering for calcareous sediments. Baklkema, Rotterdam, pp 1–6
Salem M, Elmamlouk H, Agaiby S (2013) Static and cyclic behavior of North Coast calcareous sand in Egypt. Soil Dynam Earthq Eng 55:83–91
Shahnazari H, Rezvani R (2013) Effective parameters for the particle breakage of calcareous sands: an experimental study. Eng Geol 159:98–105
Shaqour FM (2007) Cone penetration resistance of calcareous sand. Bull Eng Geol Environ 66:59–70
Tian YH, Cassidy MJ, Gaudin c (2010) Advancing pipe-soil interaction models in calcareous sand. Appl Ocean Res 32:284–297
Veron J (2000) Corals of the world. Australian Institute of Marine Science and CRR Old Pty, Townsville, Queensland, Australia, pp 1–49
Wang XZ, Jiao YY, Wang R, Hu MM, Meng QS, Tan FY (2011) Engineering characteristics of the calcareous sand in Nansha Islands, South China Sea. Eng Geol 120:40–47
Wang XZ, Tan FY, Jiao YY, Wang R (2014) A new apparatus for testing the bearing capacity of calcareous sand in laboratory. Mar Georesour Geotechnol 32(4):379–386
Warren BE (1990) X-ray diffraction. Dover, New York, pp 29–30
Wess JA, Chamberlin RS (1971) Khazzan Dubai no. 1: pile design and installation. J Soil Mech Found Div 10:1415–1429
Ye JH (2012) 3D liquefaction criterion for seabed considering the cohesion and friction of soil. Appl Ocean Res 37:111–119
Ye JH, Jeng D-S, Chan AHC (2012) Consolidation and dynamics of 3D unsaturated porous seabed under rigid caisson breakwater under hydrostatic pressure and wave. Sci China Technol Sci 55(8):2362–2376
Zhang JM, Jiang GS, Wang R (2009) Research on influences of particle breakage and dilatancy on shear strength of calcareous sands (in Chinese). Rock Soil Mech 30:2043–2048
Acknowledgements
This work was funded by National Program on Key Basic Research Project of China (No. 2013CB956104) and the National Natural Science Foundation of China (Nos. 41572297, 51108449, 41372318 and 41330642). Specially, the authors highly appreciate the three reviewers and editors for their critical and constructive comments.
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Wang, XZ., Wang, X., Jin, ZC. et al. Shear characteristics of calcareous gravelly soil. Bull Eng Geol Environ 76, 561–573 (2017). https://doi.org/10.1007/s10064-016-0978-z
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DOI: https://doi.org/10.1007/s10064-016-0978-z