Effect of incremental loading on the creep behaviour of chemically grouted sand |
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Authors: | M Mollamahmutoglu |
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Affiliation: | (1) Gazi University, Faculty of Engineering and Architecture, Civil Engineering Department, Maltepe/Ankara, Turkey Fax: +90-312-2308434 e-mail: molla@mikasa.mmf.gazi.edu.tr, TR |
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Abstract: | This paper describes the results of a study on the stress-strain time dependent (creep) behaviour of silicate-Hardener 600B
grouted Leighton Buzzard sand specimens when subjected to incremental loading at certain time intervals. Unconfined and confined
multi-stage creep tests were conducted on sand specimens injected with different silicate content grouts which cover the range
generally used in engineering practice. The laboratory results showed that creep movements increase with the increase in stress
ratio causing a rise in strain rate which ultimately leads to creep rupture (complete failure). However, an increase in the
stress ratio does not affect the linear relationship between logarithm of strain rate and the logarithm of time suggesting
that the three parameter phenomenological relationship of Singh and Mitchell (1968) may be suitable to describe the multi-stage
creep behaviour of silicate-Hardener 600B grouted sand.
Received: 25 September 1998 · Accepted: 19 February 1999 |
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Keywords: | Sand Chemical grout Stress ratio Single-stage creep Multi-stage creep |
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