Time‐Dependent Cone Penetration Resistance due to Blasting
Publication: Journal of Geotechnical Engineering
Volume 118, Issue 8
Abstract
Changes in tip resistance, local friction, and friction ratio following blasting in saturated, sandy alluvium are reported. Cone penetration tests (CPT) were performed one week prior to blasting and one, three, and 18 weeks after blasting. Blasting initially decreased the tip resistance by 62%, decreased the local friction by 30%, and increased the friction ratio by 100% of the preblast values. From one week to 18 weeks after blasting, the normalized tip resistance increased by 18%, the normalized local friction decreased by 39%, and the normalized friction ratio decreased by 80% of the postblast values. The rate of increase of normalized tip resistance observed in this research is less than that reported from tests conducted in warmer climates but is greater for tests in colder climates. This suggests that the rate of aging of sands may be temperature‐dependent. Time‐dependent changes in local friction observed in this research have not been reported in the literature.
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References
1.
Afifi, S. S., and Woods, R. D. (1971). “Long‐term pressure effects on shear modulus of soils.” J. Soil Mech. Found. Div., ASCE, 97(10), 1445–1460.
2.
Anderson, D. G., and Stokoe, K. H. (1978). “Shear modulus, a time‐dependent soil property,” Dynamic geotechnical testing, STP 654, American Society for Testing and Materials, Philadelphia, Pa., 66–90.
3.
Annual book of ASTM standards, soil and rock; Building stones, Section 4, Vol. 8. (1987). ASTM, Philadelphia, Pa.
4.
Blasters handbook. (1980). E. I. du Pont de Nemours and Co., Wilmington, Del.
5.
Chapman, G. A. (1974). “A calibration chamber for field test equipment.” Proc. 1st European Symp. on Penetration Testing, International Society for Soil Mechanics and Foundation Engineering, vol. 2.2, 66–90.
6.
Doesken, N. J., and McKee, T. B. (1988). “Colorado climate summary, October 1986–September 1987.” Climatology Report No. 88‐1, Dept. of Atmospheric Sci., Colorado State Univ., Fort Collins, Colo.
7.
Douglas, B. J., and Olsen, R. S. (1981). “Soil classification using electric cone.” Conf. Cone Penetration and Experience, ASCE, 209–227.
8.
Dowding, C. H., and Hryciw, R. D. (1986). “A laboratory study of blast densification of saturated sand.” J. Geotech. Engrg., ASCE, 112(2), 187–199.
9.
Fordham, C. J., McRoberts, E. C., Purcell, B. C., and McLaughlin, P. D. (1991). “Practical and theoretical problems associated with blast densification of loose sands.” Proc., 44th Canadian Geotech. Conf., Canadian Geotechnical Society, vol. 2, 92.1–92.2.
10.
Hall, C. E. (1962). “Compacting a dam foundation by blasting.” J. Soil Mech. Found. Engrg., ASCE, 88(3), 33–52.
11.
Ivanov, P. L. (1967). “Compaction of non‐cohesive soils by explosions.” U.S. Department of the Interior, Bureau of Reclamation and National Science Foundation, Washington, D.C.
12.
Jamiolkowski, M., Baldi, G., Belloti, F., and Pasqualini, E. (1985). “Penetration resistance and liquefaction of sands.” Proc. 11th Int. Conf. of Soil Mech. and Found. Engrg., International Society for Soil Mechanics and Foundation Engineering, vol. 4, 1891–1896.
13.
Jefferies, M. G., Rogers, B. T., Stewart, H. R., Shinde, S., James, D., and Williams‐Fitzpatrick, S. (1988). “Island construction in the Canadian Beaufort Sea.” Proc. Hydr. Fill Struct. (Geotech. Special Publications No. 21), ASCE, 816–883.
14.
Kaniraj, S. R., Wijeweera, H., Joshi, R. C., and Shinde, S. B. (1991). “Aging of sands.” Proc. 44th Canadian Geotech. Conf., Canadian Geotechnical Society, vol. 1,4‐1–4‐7.
15.
Lukas, R. G. (1980). “Densification of loose deposits by pounding.” J. Geotech. Engrg., ASCE, 106(4), 435–446.
16.
Mesri, G., Feng, T. W., and Benak, J. M. (1990). “Postdensification penetration of clean sands.” J. Geotech. Engrg., ASCE, 116(7), 1095–1115.
17.
Mitchell, J. K. (1984). “Practical problems from surprising soil behavior.” J. Geotech. Engrg., ASCE, 112(3), 259–289.
18.
Mitchell, J. K., and Solymar, Z. V. (1984). “Time‐dependent strength gain in freshly deposited or densified sand.” J. Geotech. Engrg., ASCE, 110(11), 1559–1576.
19.
Prugh, B. J. (1963). “Densification of soils by explosives vibrations.” J. Constr. Div., ASCE, 89(1), 79–100.
20.
Rad, N. S., and Tumay, M. T. (1986). “Effect of cementation on the cone penetration resistance of sand.” Proc. In‐Situ Specialty Conf., ASCE, 926–948.
21.
Robertson, P. K., and Campanella, R. G. (1983). “Interpretation of cone penetration tests. Part 1. Sand.” Can. Geotech. J., 20(4), 718–733.
22.
Rwebyogo, M. F. J. (1987). “Time dependent cone penetration resistance of a disturbed natural sand deposit,” MS thesis, Colorado State University, Fort Collins, Colo.
23.
Schmertmann, J. H. (1975). “The measurements of in‐situ shear strength.” Specialty Conf. of In‐Situ Measurements of Soil Properties, ASCE, vol. 2, 57–138.
24.
Schmertmann, J. H. (1987). Discussion on “Time‐dependent strength gain in freshly deposited or densified sand,” by J. K. Mitchell and Z. V. Solymar.J. Geotech. Engrg., ASCE, 113(2), 171–176.
25.
Schmertmann, J. H. (1991). “The mechanical aging of soils.” J. Geotech. Engrg., ASCE, 117(9), 1288–1330.
26.
Seed, H. B. (1979). “Soil liquefaction and cyclic mobility evaluation for level ground during earthquakes.” J. Geotech. Engrg. Div., ASCE, 105(2), 201–255.
27.
Stewart, H. R., and Hodge, W. E. (1988). “Molikpaq core densification by explosives at Amauligak F‐24.” Proc., 20th Offshore Tech. Conf., ASCE et al., 23–34.
28.
Yan, X. H., Klemas, V. V., and Chen, D. (1992). “The western Pacific warm pool observed from space.” Trans. EOS, American Geophysical Union, 73(4), 41–44.
Information & Authors
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Published In
Journal of Geotechnical Engineering
Volume 118 • Issue 8 • August 1992
Pages: 1200 - 1215
Copyright
Copyright © 1992 ASCE.
History
Published online: Aug 1, 1992
Published in print: Aug 1992
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