Vliv vysoušení zemin na vyhodnocení vlhkosti na mezi tekutosti

Abstract

This bachelor thesis deals with the influence of soil drying on determining the moisture content at liquid limit. The liquid limit is one of Atterberg’s three basic consistency limits and is one of the most basic and important characteristics of cohesive soils. The first part of the thesis contains a theoretical analysis. The second part describes the laboratory preparation of twenty soil samples and determining the moisture content at liquid limit which was assessed by the fall-cone test. Liquid limit values of samples being dried at the temperature of 105 °C for 24 hours were compared with liquid limit assessed on samples which gradually dried out within outside temperature. According to the standard ČSN EN ISO 17892-12 (November 2018), the tests for determining the consistency limits should only be done with soils in their natural state. The soil should not be dried out before the testing can begin, if it is, however, necessary, it should be noted in the laboratory protocol. The goal of this thesis is to find out whether drying a soil sample with a dryer at the temperature of 105 °C will influence the resultant levels of the moisture content at liquid limit or not.