DOI: 10.5593/SGEM2014/B12/S2.039


G. Nguyen
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-08-7 / ISSN 1314-2704, June 19-25, 2014, Book 1, Vol. 2, 299-306 pp

The paper deals with some differences in determination of soils shear strength parameters and deformation characteristics in Slovakia and Poland. Poorly-graded sand (SP) and clay of high plasticity (CH) as subsoil in an area of industrial and technology park belonging to territory of town Tarnobrzeg (Poland) will serve as example soils. The results show that for the same soils, values of geotechnical parameters determined by well-known procedures, quoted in the Slovak standard STN 73 1001, Polish standard PN-81/B-03020 and applied in Slovakia and Poland are different. The biggest differences are in the values of a deformation modulus, where difference for the soil SP is -24.566 MPa (-79.5%) and for the soil CH is -12.671 MPa (-372.6%). Difference in an angle of internal friction for the soil SP is 3.38o (9.8%). The comparison of shear strength parameters of the soil CH (and generally of cohesive soils) is questionable since, by the analysed Polish procedure, the values of shear strength parameters are not exactly neither effective nor total. Based on the results of analysis, one can state that it is not suitable to apply the values of geotechnical parameters obtained in Poland to design geotechnical structures according to the Slovak standard and vice-versa.

Keywords: shear strength parameters, deformation characteristics, STN 73 1001, PN-81/B-03020, spread foundation.