Effects of Aging on Freshly Deposited or Densified Calcareous Sands

Abstract

The effect of aging on the strength and compressibility of calcareous desert sands was examined by laboratory and field tests. The field tests included standard penetration and dynamic cone penetration tests on freshly deposited loose calcareous sand at one site in Kuwait City. The laboratory tests included direct shear, consolidation, and California bearing ratio tests on reconstituted compacted specimens from a naturally cemented sand. These tests were conducted at zero time and after aging for different periods in the laboratory. The results indicate an increase in the shear strength and a reduction in compressibility at a decreasing rate with time. The penetration resistance increased by 100 to 200 percent as a result of aging over a period of 1 year. The changes in strength and compressibility are attributed to mechanical effects resulting from particle interlocking, reorientation, and dispersion and increased friction at a constant effective stress.

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References

Mitchell

J. K.

, and Solymar

Z. V.

. Time-Dependent Strength Gain in Freshly Deposited or Densified Sand. Journal of Geotechnical Engineering, ASCE, Vol. 110, No. 11, 1984, pp. 1559–1576.

Schmertmann

J. H.

Discussion of “Time-Dependent Strength Gain in Freshly Deposited or Densified Sand” by J. Mitchell and Z. Solymer. Journal of Geotechnical Engineering, ASCE, Vol. 113, No. 2, 1987, pp. 173–175.

Charlie

W. A.

, Rwebyogo

M. F. J.

, and Doehring

D. O.

. Time-Dependent Cone Penetration Resistance Due to Blasting. Journal of Geo-technical Engineering, ASCE, Vol. 118, No. 8, 1992, pp. 1200–1215.

Daramola

Effect of Consolidation Age on Stiffness of Sand. Geo-technique, June 1980, p. 214.

York

D. L.

, Brusey

W. G.

, Clemente

F. M.

, and Law

S. K.

. Setup and Relaxation in Glacial Sands. Journal of Geotechnical Engineering, ASCE, Vol. 120, No. 9, 1994, pp. 1498–1513.

Fellenius

B. H.

, Riker

R. E.

, O' Brien

A. J.

, and Tracy

G. R.

. Dynamic and Static Testing in Soil Exhibiting Set-up. Journal of Geotechnical Engineering, ASCE, Vol. 115, No. 7, 1989, pp. 984–1001.

Tavenas

, and Audy

. Limitations of the Driving Formulas for Predicting the Bearing Capacities of Pile in Sand. Canadian Geotechnical Journal, Vol. 9, No. 1, 1972, pp. 47–62.

Schmertmann

J. H.

The Mechanical Aging of Soils. Journal of Geo-technical Engineering, ASCE, Vol. 117, No. 9, 1991, pp. 1288–1330.

Mesri

, Feng

T. W.

, and Benak

J. M.

. Postdensification Penetration Resistance of Clean Sands. Journal of Geotechnical Engineering, ASCE, Vol. 116, No. 7, 1990, pp. 1095–1115.

10.

Jefferies

M. G.

, and Rogers

B. T.

. Discussion of “Time-Dependent Cone Penetration Resistance Due to Blasting” by W. A. Charlie et al. Journal of Geotechnical Engineering, ASCE, Vol. 119, No. 12, 1993, pp. 2008–2012.

11.

Dudler

I. V.

, Durante

V. A.

, and Smirnov

C. D.

. Experience Gained in Using the Penetrometer Probe for Soil Investigation in Conjunction with Energy-Related Construction in the Soviet Union. INFORM-ENEGRO, Moscow, No. 63, 1968.

12.

Ismael

N. F.

, Jeragh

A. M.

, Mollah

M. A.

, and Al-Khalidi

. A Study of the Properties of Surface Soils in Kuwait. Geotechnical Engineering, Journal of Southeast Asian Geotechnical Society, Vol. 17, No. 1, June 1986, pp. 67–87.

13.

Mitchell

J. K.

Fundamental Aspects of Thixotropy in Soils. Journal of Soil Mechanics and Foundations, ASCE, Vol. 86, No. 3, 1960, pp. 19–52.