Experimental investigations of fracture toughness and crack initiation in marble under different freezing and thermal cyclic loading

On the decay of fracture toughness of sandstone subjected to freeze–thaw cycles

“…Based on semi-circular bend specimen (SCB), Cao et al 13 performed mode I, mode II, and four types of mixed-mode I-II fracture toughness of sandstone specimens experiencing varied freeze-thaw cycles, and predictions by the modified maximum tangential stress criterion (MMTS) displayed good agreement with test results. Dehghani and Faramarzi 14 studied the fracture toughness of the SCB of marble under four types of freezing and thermal cyclic treatments. The extended maximum tangential strain criterion (EMTSN) provided satisfied estimations.…”

A New Method for Predicting the Crack Propagation Process of Brittle Rock Under Thermo-Hydro-Mechanical Loading Conditions

“…Fracture criterion is the key to predicting the crack initiation and current fracture criteria can be divided into three categories: 1) stress-based fracture criterion, such as maximum tensile stress criteria (σ θ -criterion) [19], maximum tangential principle stress criterion (σ 1θ -criterion) [20] and twin shear stress criterion [21], 2) strain-based fracture criteria, such as maximum tangential strain criterion (ε θ -criterion) [22], and 3) energy-based fracture criteria, such as minimum strain energy density criterion (Scriterion) [23], maximum energy release rate criterion (Gcriterion) [24][25], maximum volumetric strain energy density criterion (T-criterion) [26][27][28], and maximum distortional strain energy release rate criterion (Y-criterion) [29]. These criteria can successfully predict crack initiation of most materials (e.g., metal and glass) under pure tensile [20][21][22][23][24][25][26][27][28][29][30][31][32] and shear [33][34][35][36], and mixed loading conditions [37][38][39][40][41][42][43]. For brittle rock, pure shear loading applied on a pre-existing crack is not certain to lead to Mode II fracture, and Mode I fracture is easy to occur before Mode II fracture is initiated under pure shear loading condition [44][45], since the tensile strength of rock is substantially smaller than its shear strength.…”

Fracture mechanism and constitutive model considering post-peak plastic deformation of marble under thermal-mechanical action

“…. It is a new topic to deal with rock engineering problems under high temperature environment (Ogata et al, 2022;Federico et al, 2019; Bijan & Lohrasb, 2019) [5][6][7] . Influenced by factors such as geological tectonics, engineering depth, fire accidents, magma and underground hot water activities (Huang et al, 2021; Wang et al, 2022; Hao et al, 2022) [8][9][10] , high temperature phenomenon of rocks is finding in many fields such as mining, energy, geology and civil engineering (Etzelmüller et al, 2022; Hu et al, 2022) [11][12] .…”

“…Peng et al (2016) [16] studied the physical and mechanical behaviors of a thermal-damaged coarse marble under uniaxial compression, found that specimens are exposed to high temperatures, their color changes significantly and many microcracks are generated in the specimens, and with the applied temperature increasing, the longitudinal wave velocity, uniaxial compressive strength, and Young's modulus decrease gradually. Dehghani & Faramarzi (2019) [7] have investigated marble specimens crack initiation and propagation and fracture modes under freezing and thermal cyclic loading conditions. Huang et al (2021) [8] have investigated the variations in physical and mechanical properties of granite, sandstone, and marble from room temperature to 1000 •C, and pointed out that the main reason for heated rock damage is the increase of cracks which destroy the structure and weaken the bonding between particles.…”