Basic set of experiments for determination of mechanical properties of sand

• Autorzy: Sawicki A. , Mierczyński J. , Świdziński W.

Identyfikatory

DOI

10.2478/bpasts-2014-0015

• Języki publikacji: EN

Abstrakty

EN

A basic set of experiments for the determination of mechanical properties of sands is described. This includes the determination of basic physical and mechanical properties, as conventionally applied in soil mechanics, as well as some additional experiments, which provide further information on mechanical properties of granular soils. These additional experiments allow for determination of steady state and instability lines, stress-strain relations for isotropic loading and pure shearing, and simple cyclic shearing tests. Unconventional oedometric experiments are also presented. Necessary laboratory equipment is described, which includes a triaxial apparatus equipped with local strain gauges, an oedometer capable of measuring lateral stresses and a simple cyclic shearing apparatus. The above experiments provide additional information on soil’s properties, which is useful in studying the following phenomena: pre-failure deformations of sand including cyclic loading compaction, pore-pressure generation and liquefaction, both static and caused by cyclic loadings, the effect of sand initial anisotropy and various instabilities. An important feature of the experiments described is that they make it possible to determine the initial state of sand, defined as either contractive or dilative. Experimental results for the “Gdynia” model sand are shown.

Słowa kluczowe

EN

granular soils; mechanical properties; experimental determination

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2014
• Tom: Vol. 62, nr 1
• Strony: 129--137
• Opis fizyczny: Bibliogr. 31 poz., rys., fot., wykr.

Twórcy

autor

Sawicki A.

• Institute of Hydro-Engineering, Polish Academy of Sciences, 7 Kościerska St., 80-328 Gdańsk-Oliwa, Poland

autor

Mierczyński J.

• Institute of Hydro-Engineering, Polish Academy of Sciences, 7 Kościerska St., 80-328 Gdańsk-Oliwa, Poland

autor

Świdziński W.

• Institute of Hydro-Engineering, Polish Academy of Sciences, 7 Kościerska St., 80-328 Gdańsk-Oliwa, Poland

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