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Statements

Subject Item
n2:RIV%2F41192168%3A_____%2F12%3A%230000054%21RIV14-MPO-41192168
rdf:type
n10:Vysledek skos:Concept
rdfs:seeAlso
http://www.irsm.cas.cz/materialy/acta_content/2012_04/10.Novakova.pdf
dcterms:description
This paper investigates the matrix porosity and related properties of a leucocratic granite from the Krudum Massif, West Bohemia. The required samples were obtained from the 30-year old core of borehole KZ-25 (Material Documentation Depositories). In total, nine sample sets were taken from different depth levels within the borehole ranging from 18 m to 108 m. The hydraulic conductivity of the granite matrix was measured using a pressure cell whilst standard methods were employed to determine the dry density, connected porosity and total porosity. The pore size distribution was analysed using mercury porosimetry. The ultrasonic velocities were measured using a pulse source and oscilloscope. Dynamic Young’s modulus, dynamic shear modulus, Poisson’s ratio, static Young’s modulus, uniaxial compressive strength and moisture were determined according to measurements of ultrasonic velocities and deformability in uniaxial compression. The morphology and structure of the pore network was studied using high resolution scanning electron microscopy. The overall porosity values defined by the different porosimetry methods follow the same trends although the absolute values differ according to the specific method. A logarithmic relationship was found to exist between hydraulic conductivity and porosity within the granite matrix. In addition, a slight depth dependence was noted in the porosity, hydraulic conductivity, bulk density, and ultrasonic velocities of the granite matrix. The SEM images have allowed precise mapping and detailed description of the pore network. This paper investigates the matrix porosity and related properties of a leucocratic granite from the Krudum Massif, West Bohemia. The required samples were obtained from the 30-year old core of borehole KZ-25 (Material Documentation Depositories). In total, nine sample sets were taken from different depth levels within the borehole ranging from 18 m to 108 m. The hydraulic conductivity of the granite matrix was measured using a pressure cell whilst standard methods were employed to determine the dry density, connected porosity and total porosity. The pore size distribution was analysed using mercury porosimetry. The ultrasonic velocities were measured using a pulse source and oscilloscope. Dynamic Young’s modulus, dynamic shear modulus, Poisson’s ratio, static Young’s modulus, uniaxial compressive strength and moisture were determined according to measurements of ultrasonic velocities and deformability in uniaxial compression. The morphology and structure of the pore network was studied using high resolution scanning electron microscopy. The overall porosity values defined by the different porosimetry methods follow the same trends although the absolute values differ according to the specific method. A logarithmic relationship was found to exist between hydraulic conductivity and porosity within the granite matrix. In addition, a slight depth dependence was noted in the porosity, hydraulic conductivity, bulk density, and ultrasonic velocities of the granite matrix. The SEM images have allowed precise mapping and detailed description of the pore network.
dcterms:title
The matrix porosity and related properties of a leucocratic granite from the Krudum massif, West Bohemia The matrix porosity and related properties of a leucocratic granite from the Krudum massif, West Bohemia
skos:prefLabel
The matrix porosity and related properties of a leucocratic granite from the Krudum massif, West Bohemia The matrix porosity and related properties of a leucocratic granite from the Krudum massif, West Bohemia
skos:notation
RIV/41192168:_____/12:#0000054!RIV14-MPO-41192168
n10:predkladatel
n18:ico%3A41192168
n3:aktivita
n12:P n12:I
n3:aktivity
I, P(FR-TI1/367)
n3:cisloPeriodika
4
n3:dodaniDat
n8:2014
n3:domaciTvurceVysledku
n5:2011913 n5:1444816
n3:druhVysledku
n7:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
148776
n3:idVysledku
RIV/41192168:_____/12:#0000054
n3:jazykVysledku
n19:eng
n3:klicovaSlova
leucocratic granite, matrix porosity, geomechanical properties, hydraulic conductivity, ultrasonic velocities, scanning electron microscopy
n3:klicoveSlovo
n9:scanning%20electron%20microscopy n9:ultrasonic%20velocities n9:geomechanical%20properties n9:matrix%20porosity n9:hydraulic%20conductivity n9:leucocratic%20granite
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[3AEF9EA380F7]
n3:nazevZdroje
Acta Geodynamica et Geomaterialia
n3:obor
n17:DB
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
5
n3:projekt
n4:FR-TI1%2F367
n3:rokUplatneniVysledku
n8:2012
n3:svazekPeriodika
9
n3:tvurceVysledku
Brož, Milan Novák, Petr Nováková, Lucie Sosna, Karel Najser, Jan
n3:wos
000255169000006
s:issn
1214-9705
s:numberOfPages
20