@Article{icces.2023.09829,
AUTHOR = {Mengyi Li, Zhijun Wu},
TITLE = {Measuring the Tensile Strength Degradations of Mineral Grain Interfaces  (MGIs) in the Granite After Thermo-hydro-mechanical (THM) Coupling},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {25},
YEAR = {2023},
NUMBER = {1},
PAGES = {1--2},
URL = {http://www.techscience.com/icces/v25n1/53788},
ISSN = {1933-2815},
ABSTRACT = {Buried in depth for decades of years, granite in the deep geological repository will be subjected to extremely 
complex effects of thermo-hydro-mechanical (THM) treatment, and the tensile strengths of mineral grain 
interfaces (MGIs) are inevitably impacted by the THM treatment [1, 2]. Originated by the failure modes of 
granite after THM treatment, the tensile strength of MGI plays an important role in determining the macro 
mechanical properties of THM-treated granite [3, 4]. However, the accurate characterization of the tensile 
strength degradations of MGIs with THM treatment is still lacking. In this study, the varied tensile strengths 
of MGIs, including the interfaces of quartz (q-q), feldspar (f-f) and the interfaces between quartz and 
feldspar (q-f) in the granite after different THM treatments were first directly measured based on a selfdeveloped single-MGI mechanical test system. The degradations of tensile strengths of different MGIs were 
distinguished, which was the most obvious in q-f, followed by f-f and then q-q. The tensile strength 
degradation models of the granite related to the THM treatments were proposed based on the results of the 
experiment. The findings in this study can provide key references for estimating the THM effects on the meso 
and macro mechanical properties of granites.},
DOI = {10.32604/icces.2023.09829}
}