Efektívnosť ílových minerálov pri znižovaní vodoodpudivosti počas dlhého suchého a teplého obdobia

[img]
Preview
PDF
Language: Slovak
246Kb
Title:Efektívnosť ílových minerálov pri znižovaní vodoodpudivosti počas dlhého suchého a teplého obdobia
Creators:
Lichner, Ľubomír; lichner at uh dot savba dot sk; Ústav hydrológie SAV, Račianska 75, 831 02 Bratislava, Slovenská republika
Dlapa, Pavel; dlapa at fns dot uniba dot sk; Katedra pedológie Prírodovedeckej fakulty UK, Mlynská dolina B-2, 842 15 Bratislava, Slovenská republika
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 52, 3, pp. 205-214
Uncontrolled Keywords:Water Repellency, Sand, Stearic Acid, Clay Minerals

Abstract

The aim of this study was to evaluate an efficiency of clay minerals (kaolinite, illite, Na- and Ca-montmorillonite) in alleviating the water repellency of stearic acid sand during the course of long-term hot and dry spell. This spell was simulated by prolonged drying (incubation) of the samples in oven at 50°C. It was found that the kaolinite addition resulted in a drop in the persistence of water repellency of the stearic acid sand. On the contrary, the Ca-montmorillonite addition increased markedly the persistence of water repellency of the stearic acid sand. In most cases, the illite addition resulted in an increase in the persistence of water repellency, even though not so markedly as it was in the case of Ca-montmorillonite addition. In the case of Na-montmorillonite addition, the striking drop in the persistence of water repellency of the stearic acid sand was registered only after lowering the moisture below 5 %. An increase in the persistence of water repellency of the sand–clay mixture with an increase in the clay amount is another interesting finding, observed in case of kaolinite and Ca-montmorillonite.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:Efektívnosť ílových minerálov pri znižovaní vodoodpudivosti počas dlhého suchého a teplého obdobia
Translated title:The efficiency of clay minerals in alleviating the water repellency during the course of long-term hot and dry spell
Creators:
Lichner, Ľubomír; lichner at uh dot savba dot sk; Ústav hydrológie SAV, Račianska 75, 831 02 Bratislava, Slovenská republika
Dlapa, Pavel; dlapa at fns dot uniba dot sk; Katedra pedológie Prírodovedeckej fakulty UK, Mlynská dolina B-2, 842 15 Bratislava, Slovenská republika
Uncontrolled Keywords:Water Repellency, Sand, Stearic Acid, Clay Minerals
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:52
Number:3
Page Range:pp. 205-214
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:5986
Item Type:Article
Deposited On:15 Jun 2010 12:14
Last Modified:15 Jun 2010 10:14

Citation

Lichner, Ľubomír; Dlapa, Pavel (2004) Efektívnosť ílových minerálov pri znižovaní vodoodpudivosti počas dlhého suchého a teplého obdobia. Journal of Hydrology and Hydromechanics, 52 (3). pp. 205-214. ISSN 0042-790X

Repository Staff Only: item control page