The Influence of Internal Structure Change on Sandstone Strength

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00235757" target="_blank" >RIV/68407700:21110/15:00235757 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.engmech.cz/2015/" target="_blank" >http://www.engmech.cz/2015/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The Influence of Internal Structure Change on Sandstone Strength

Popis výsledku v původním jazyce

During their “life” sandstones are influenced by actions of weathering processes which usually lead to changes in their internal structure. Porosity and the character of pore space is one of the main factors affecting the resistance to weathering processes and, consequently, to the changes of mechanical-physical properties of these stones. Rock material is generally negatively influenced especially during the winter period. The effect of salt crystals and ice formation depends on the character of pore space, including the pore size distribution. Our research was focused on three commonly used Czech Cretaceous sandstones – Hořice, Božanov and Kocbeře. These stones were exposed to the accelerated durability test and then the change of uniaxial compressive strength was determined. We used the mercury porosimetry and X-Ray microtomography methods to evaluate the changes of pore space properties. Use of these methods enabled more detailed understanding of the processes inside the stone structure and their influence on strength characteristics of sandstones.

Název v anglickém jazyce

The Influence of Internal Structure Change on Sandstone Strength

Popis výsledku anglicky

During their “life” sandstones are influenced by actions of weathering processes which usually lead to changes in their internal structure. Porosity and the character of pore space is one of the main factors affecting the resistance to weathering processes and, consequently, to the changes of mechanical-physical properties of these stones. Rock material is generally negatively influenced especially during the winter period. The effect of salt crystals and ice formation depends on the character of pore space, including the pore size distribution. Our research was focused on three commonly used Czech Cretaceous sandstones – Hořice, Božanov and Kocbeře. These stones were exposed to the accelerated durability test and then the change of uniaxial compressive strength was determined. We used the mercury porosimetry and X-Ray microtomography methods to evaluate the changes of pore space properties. Use of these methods enabled more detailed understanding of the processes inside the stone structure and their influence on strength characteristics of sandstones.

Druh

O - Ostatní výsledky

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/DF12P01OVV020" target="_blank" >DF12P01OVV020: Komplexní metodika pro výběr a řemeslné opracování náhradního kamene pro opravy kvádrového zdiva historických objektů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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