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9 892 (0,087s) •

Project

Research on Energy Characteristics of Rocks under Dynamic Loading (GA105/05/0883)

place at anomalous geomechanical events in the rock mass. Up to now, the characteristics of rocks under dynamic loading have merely been studied from the stress-strain to evaluate in detail both the stress

DH - Báňský průmysl včetně těžby a zpracování uhlí

  • 2005 - 2007
    • •
  • 1 185 tis. Kč
    • •
  • 975 tis. Kč
    • •
  • GA ČR
Project

Experimental study of crack initiation and crack damage stress thresholds as critical parameters influencing the durability of natural porous stone (GA13-13967S)

fracture process (crack initiation and damage), which can be derived from stress-strain, granulometry, degree of cementation, and physical properties. Prior to the rock mechanical to evaluate effect of rock

JN - Stavebnictví

  • 2013 - 2019
    • •
  • 9 858 tis. Kč
    • •
  • 9 858 tis. Kč
    • •
  • GA ČR
Project

Laboratory study of the fracturing of rock samples under the long-term controlled deformation and loading (GA205/06/0906)

stress during long-term sample loading. The project's starting point consists in a knowledge concerning stress-strain properties of rocks from the ultradeep Kola borehole, plus experience from a study of ...

DC - Seismologie, vulkanologie a struktura Země

  • 2006 - 2008
    • •
  • 2 037 tis. Kč
    • •
  • 2 037 tis. Kč
    • •
  • GA ČR
Project

Resistance to brittle damage use of petrographic/ rock mechanical data for the technological-mechanical behaviour and serviceability of crushed stone (GA18-08826S)

. This involves crack initiation and crack damage stress-strain thresholds that can be derived from stress-strain curves in compression and/or tension. In contrast to empirical derived stress-strain

Geology

  • 2018 - 2022
    • •
  • 5 278 tis. Kč
    • •
  • 5 185 tis. Kč
    • •
  • GA ČR
Project

Influence of postgenetic alterations of granites on their resistance to weathering processes in cultural heritage structures (GA21-26542S)

in construction. These alterations are manifested by discrete phenomena in rock-forming minerals and rock microfabric (e.g., alteration of more basic cores of plagioclases and microstructural changes on mechanical properties

Civil engineering

  • 2021 - 2023
    • •
  • 7 051 tis. Kč
    • •
  • 7 051 tis. Kč
    • •
  • GA ČR
Project

Factors influencing the origin of the acoustic emission in rock samples in triaxial stress conditions (GA105/00/P064)

: This loading allowto model the stress-strain state in roclanass in laboratory conditions properties will be tested on samples of sedimentary rocks from the Czech part knowledge of the rock bëhaviour duri...

DH - Báňský průmysl včetně těžby a zpracování uhlí

  • 2000 - 2001
    • •
  • 443 tis. Kč
    • •
  • 318 tis. Kč
    • •
  • GA ČR
Project

Analysis of failure development of rock samples in deformation process by physical methods (GA105/02/0895)

to various degrees of state of stress and of strain up to those exceeding their limit stress by measurement of volumetric changes of rock sample and of velocity of passageStudy of the process of propagation of fai...

DH - Báňský průmysl včetně těžby a zpracování uhlí

  • 2002 - 2004
    • •
  • 2 029 tis. Kč
    • •
  • 919 tis. Kč
    • •
  • GA ČR
Project

Microstructural study of orthogneisses role of strain rate, stress and temperature (GA205/00/D043)

The orthogneisses are due to their simple mineralogical composition the appropriate rocks for microstructural study of deformational mechanisms of rock forming minerals and for rheological behaviour of the continental crust. Quartz,...

DB - Geologie a mineralogie

  • 2000 - 2003
    • •
  • 480 tis. Kč
    • •
  • 351 tis. Kč
    • •
  • GA ČR
Project

Research of rheological behavior of rocks at static and vibrational loading. (GP105/08/P307)

The samples of rock will be loaded at rheological mode as static as vibrational, on special equipment MTS 816 Rock Test System. During examination will be recorded time, force, deformation and eventually other parameters. Optimal da...

DH - Báňský průmysl včetně těžby a zpracování uhlí

  • 2008 - 2010
    • •
  • 617 tis. Kč
    • •
  • 617 tis. Kč
    • •
  • GA ČR
Project

Effect of rock microfabric on the brittle failure process of rocks stressed under simulated laboratory conditions (GA205/04/0088)

Relationships will be studied between stress-strain behaviour, the acoustic rock microfabric and modes of failure has direct effect on the solution of some analysis of acoustic emission events will facilitate determination ...

DB - Geologie a mineralogie

  • 2004 - 2006
    • •
  • 2 599 tis. Kč
    • •
  • 1 499 tis. Kč
    • •
  • GA ČR
  • 1 - 10 out of 9 892