Browsing by Subject "silty soil"

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Access status: Open Access ,
Charakterystyka ściśliwości gruntu pylastego, na przykładzie lessu z rejonu Wrocławia
(Wydawnictwa AGH, 2009) Stróżyk, Joanna
The results of laboratory examinations, of silty soil compressibility were presented. The soil sample have been taken from Wrocław area. Silty soil are creating a number of problems in geoengineering. The soil structure is characterized by a great sensitivity to changes water content what causes fast changes of engineering properties caused among others with change of the state from the unsaturated to saturated. In the paper a silty soil structure sensitivity was examined for the water content changes. The assessment were done by comparing of the oedometer curve get from test of soil about the natural structure, at first saturated as well as unsaturated with water, with oedometer curve gets from soil sample about the structure prepared in laboratory.
Access status: Open Access ,
Właściwości gruntów pylastych okolic Wrocławia - badania wstępne
(Wydawnictwa AGH, 2008) Stróżyk, Joanna
Preliminary edometer tests of silty soils - loesses from Wrocław area were presented. The coefficient of collapse value i/mp and effective yield stresses value were determined. The YSR were finally estimated. The calculated value of i/mp was less than 0,02 - i/pm = 0,016, so examined soils are not collapsing type. The YSR values changed together with the soil sample saturation - for Sr = 1 value of YSR = 1,45, and for Sr = 0,35 value of YSR = 0,95. They were noticed that the state of the consolidation of soils is changed after saturating from overconsolidated to normally consolidated state.
Access status: Open Access ,
Wpływ stabilizacji cementem lub silmentem na wytrzymałość i mrozoodporność gruntu pylastego
(Wydawnictwa AGH, 2008) Zawisza, Eugeniusz; Gruchot, Andrzej Tadeusz
Results of the tests of stabilization of a silty soil with cement and silment were presented in the paper. Compression strength of the silt with 3, 6 and 10% addition of stabilizer after 7, 14, 28 and 42 days was determined. Compression strength was also determined for the samples with stabilizer after 28 days treating with cycles of freezing at the temperature of - 23 degrees of Celsius and thawing in water. The obtained values of compression strength and frost resistance index were analysed in relation to the values required for the materials used in road building.