Porosity and engineering parameters of thermally degraded Westerly granite

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F23%3A00578252" target="_blank" >RIV/67985831:_____/23:00578252 - isvavai.cz</a>

Alternative codes found

RIV/67985891:_____/23:00578252

Result on the web

<a href="https://onepetro.org/ARMAUSRMS/proceedings-abstract/ARMA23/All-ARMA23/532395" target="_blank" >https://onepetro.org/ARMAUSRMS/proceedings-abstract/ARMA23/All-ARMA23/532395</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.56952/ARMA-2023-0378" target="_blank" >10.56952/ARMA-2023-0378</a>

Result language

angličtina

Original language name

Porosity and engineering parameters of thermally degraded Westerly granite

Original language description

We present a textural analysis study based on the combination of ultrasonic testing (UT) and mercury intrusion porosimetry (MIP) of 36 Westerly granite (WG) samples exposed to different heating temperatures in the range between 100°C and 800°C. Specimens subjected to elevated temperature treatment were also subjected to the thin section analysis. Identical WG cylindrical specimens with diameter 11.5 and height 15 mm were used for UT and MIP study. UT of all specimens was made by P and S wave 1 MHz resonant frequency sensors. It was found that P-S wave velocity, amplitude, frequency and elastic modulus decrease more than 60% as a result of thermal rock material disintegration due to the increased temperature treatment. The damage parameters based on measured values were also determined. MIP showed that the pore size distributions vary with different heating temperature in dependence of the thermal WG treatment. The higher rising porosity values were observed for samples with heating temperature > 500°C. The influence of thermal treatment to the 3D – velocity distribution of P, S1, S2 by UT of spherical sample of 50 mm in diameter was also studied, that enables us to calculate full stiffness tensor. Based on the knowledge of stiffness tensor of WG material heated up to 800°C and loaded to hydrostatic pressure up to 120 MPa the 3D distribution of dynamic engineering parameters like Young and shear modulus and Poisson ratio were determined. Fundamental dynamic engineering parameters for material primary directions in temperature range 100 – 800°C and pressure range 0.1 to 120 MPa were determined.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GA21-26542S" target="_blank" >GA21-26542S: Influence of postgenetic alterations of granites on their resistance to weathering processes in cultural heritage structures</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

57th U.S. Rock Mechanics/Geomechanics Symposium. Proceeding papers

ISBN

978-0-9794975-8-2

ISSN

—

e-ISSN

—

Number of pages

4

Pages from-to

2023-0378

Publisher name

American Rock Mechanics Association

Place of publication

Atlanta, Georgia

Event location

Atlanta, Georgia

Event date

Jun 25, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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