Evaluation of Void Ratio of Sands with Various Amount of Fines On the Basis of Shear Wave Velocity Measurement

3rd World Multidisciplinary Civil Engineering, Architecture, Urban Planning Symposium

土木建筑工程;文学

Lipinski, Miroslaw J.^1 ; Wdowska, Malgorzata K.^1

Warsaw University of Life Sciences, Faculty of Civil and Environmental Engineering, Department of Geotechnical Engineering, Nowoursynowska 159, Warsaw

02-776, Poland^1

关键词: Cohesionless soil;    Effective stress;    Effective stress analysis;    Laboratory test;    Logarithm function;    Sandy materials;    Shear wave velocity;    Shear-wave velocity measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/471/4/042026/pdf
DOI  :  10.1088/1757-899X/471/4/042026

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The paper is focused on the possibility of evaluation of soil state of cohesionless soils containing fines on the basis of shear wave velocity. The paper presents laboratory test results obtained on the basis of large volume of triaxial tests data. Shear wave velocity was measured with piezoelectric transducers embodied in top and bottom platens of the triaxial cell. Three kinds of cohesionless soils containing various amount of fines (from 0 to 57%) were tested. In order to obtain vast ranges of void ratio, specimens were reconstituted by moist tamping technique with application of under compaction. For each kind of material, a series of tests was carried out in which shear wave velocity was measured. The data were categorized in several ranges of void ratio. In sandy material it was possible to distinguish a few subranges of void ratio, while in sands containing large amount of fines, the range of void ratio was significantly reduced. The tests delivered shear wave velocity values related to state of material represented by void ratio, and mean effective stress Analysis of test results revealed that relationship between shear wave velocity and mean effective stress p' can be approximated by logarithm function in distinguished void ratio ranges. This made possible to set a formula for calculating void ratio for a given state of stress on the basis of shear wave velocity measurement. Such formulae were obtained for all tested type of soil.