@Article{fdmp.2023.030028,
AUTHOR = {Wei Chen, Wenhao Zhao, Yue Liang, Frederic Skoczylas},
TITLE = {Experimental Study of Thermal-Hydraulic-Mechanical Coupling Behavior of High-Performance Concrete},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {19},
YEAR = {2023},
NUMBER = {9},
PAGES = {2417--2430},
URL = {http://www.techscience.com/fdmp/v19n9/52764},
ISSN = {1555-2578},
ABSTRACT = {The design of an underground nuclear waste disposal requires a full characterization of concrete under various
thermo-hydro-mechanical-chemical conditions. This experimental work studied the characterization of coupled
thermo-hydro-mechanical effects using concretes made with cement CEM I or CEM V/A (according to European
norms). Uniaxial and triaxial compression under 5 MPa confining pressure tests were performed under three different temperatures (T = 20°C, 50°C, and 80°C). The two concretes were dried under relative humidity (RH) to
obtain a partially saturated state of approximately 70%. The results showed that the effects of water saturation and
confining pressure are more important than that of temperature. Drying in high RH at different target temperatures led to an increase in uniaxial and triaxial strength but drying at 105°C had a negative effect on the strength
and Young‘s modulus. Oven drying caused microcracking in the concrete. The microcracks deeply influenced the
thermal damage to the material, affecting its mechanical behavior. The triaxial strength clearly increased due to
the presence of confining pressure. Moreover, an important influence of cement type was observed on the
mechanical properties; the concrete based on CEM V/A had a greater porosity than CEM I, and a finer pore structure appeared due to the presence of mineral admixtures.},
DOI = {10.32604/fdmp.2023.030028}
}