RHEOMETER USE IN ANALYSIS OF SOIL CREEP BEHAVIOUR

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-57-5 / ISSN 1314-2704, June 28 - July 6, 2016, Book1 Vol. 3, 237-244 pp

ABSTRACT
Soil creep is an important geodynamic process, which can cause deterioration of engineering geological condition of construction site. This paper presents results of rotational controlled shear stress tests, oscillatory tests and creep tests of remolded clay samples performed with rheometer. Based on the results, the creep behavior of analyzed Warsaw Mio-Pliocene clay paste samples were characterized. The application of rheometer techniques in soil mechanic is uncommon; nevertheless, these techniques have many advantages as short test time, small size of samples and not sophisticated samples preparation. A parallel-plate-rheometer AR 2000 was used for conducted tests. In the soil creep analyses, the key it is the change of soil structure at specific constant stress states that enables rheometry. For this reason, presented research can give a new light on the soil creep phenomenon.

Keywords: clay, constant stress state, soil rheology, Mio-Pliocene, Poland