Time-Dependent Creep Behavior of Particulate Materials
Publication: Journal of Materials in Civil Engineering
Volume 13, Issue 3
Abstract
The analysis of creep curves is usually based on the rate process approach originated by Eyring in 1936. The modified Eyring equation predicts that creep rate resulting from the viscous behavior is temperature dependent. All authors have so far assumed that the temperature term in the Eyring equation is time independent. In this paper it is recognized that, during the short period of sudden application of a given load to the material, the inevitable deformation that takes place at the interparticle contact zones will cause a sudden increase in the temperature of these zones. During creep, this excess temperature will dissipate and cause a progressive increase in the viscosity of the contact zones resulting in a decreasing creep rate with time. Based on the foregoing concept a theoretical equation for creep rate dependence on time has been developed. Analysis of the experimental data obtained from the creep test of lime–pulvervized-fuel-ash mixtures shows that the derived equation can only account for the decrease in strain rate during the early stages of creep.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Barenberg, E. J. ( 1979). “Utilization of lime-fly ash mixes in road construction.” Symp. on Utilization of Pulverised Fuel Ash, Pretoria, South Africa, 1–25.
2.
British Standards Institution. ( 1990). “Methods of test for soils for civil engineering purposes.” British Standard 1377, Part 2, 1–27.
3.
Christensen, R. W., and Wu, T. H. (1964). “Analysis of clay deformation as a rate process.”J. Soil Mech. and Found. Div., ASCE, 6, 125– 157.
4.
Day, R. L., and Gamble, B. R. ( 1983). “The effect of changes in structure on the activation energy for the creep of concrete.” Cement and Concrete Res., 13, 529–540.
5.
Eyring, H. ( 1936). “Viscosity, plasticity and diffusion as examples of absolute reaction rates.” J. Chem. Phys., 4, 283–291.
6.
Feda, J. ( 1989). “Interpretation of creep of soils by rate process theory.” Géotechnique, London, 39(4), 667–677.
7.
Jalali, S. ( 1991). “A study of factors affecting the behaviour of lime-fly ash mixtures.” PhD thesis, Coventry Polytechnic, Coventry, U.K.
8.
Keedwell, M. J. ( 1984). Rheology and soil mechanics, Elsevier Science, London.
9.
Kuhn, M. R., and Mitchell, J. K. (1993). “New perspectives on soil creep.”J. Geotech. Engrg., ASCE, 119(3), 507–524.
10.
Leppard, C. ( 1999). “Mathematical modelling of some mechanical properties of construction materials.” PhD thesis, Coventry Univ., Coventry, U.K.
11.
Mitchell, J. K., Campanella, R. G., and Singh, A. (1968). “Soil creep as a rate process.”J. Soil Mech. and Found. Engrg., ASCE, 94(1), 231–253.
12.
Townsend, F. C., and Donaghe, R. T. ( 1976). Investigation of accelerated curing of soil lime and lime fly ash aggregate mixtures, Part 2, U.S. Army Corps of Engineers Waterways Experiment Station, Vicksburg, Miss., 8/13, 6–34.
Information & Authors
Information
Published In
History
Received: Aug 4, 1999
Published online: Jun 1, 2001
Published in print: Jun 2001
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.