Fracture and size effect characters of cemented sand

DEM analysis of the crack propagation in brittle clays under uniaxial compression tests

“…Several authors have studied the mechanics of crack propagation in brittle materials such as stiff clays [13][14][15][16][17][18][19] and cemented sands [20]. These authors used LEFM to analyze the mechanics of crack propagation and failure of those materials.…”

Brittle fracture evaluation of a fine grain cement mortar in combined tensile‐shear deformation

“…Conventional MTS criterion [19] Test data (HSCM) [1] Modified MTS criterion (r c = 1.5 mm) Curve fitted to the average test data [6] [13] Fig. 5 Estimates of modified MTS theory for fracture toughness under combined mode loading in the tested HSCM specimens.…”

“…However, the nonlinear region in some of the quasi‐brittle materials like rocks and fine grain cement mortars or in large structures like dams are very often small relative to the characteristic dimensions of the cracked component (like the crack length, specimen thickness, ligament, etc.). For such cases, the components are usually susceptible to brittle fracture due to sudden extension of their inherent cracks and their fracture behaviour can still be investigated by means of LEFM principles 1–6 …”

“…For such cases, the components are usually susceptible to brittle fracture due to sudden extension of their inherent cracks and their fracture behaviour can still be investigated by means of LEFM principles. [1][2][3][4][5][6] The crack behaviour depends also on the type of loading. In the absence of out-of-plane (mode III) deformation, the crack extension takes place as a result of combined tension and shear (or combined mode I and II) loading.…”

Análise do processo de ressecamento em misturas de resíduos de construção civil (RCC) e bentonita para aplicação em camadas de cobertura de aterros de resíduos sólidos

“…Estudos da mecânica da fratura elástica linear (MFLE) aplicado à fissuração dos solos, não são muitos, embora nos últimos anos tenham mostrado que esta abordagem é promissora para entender os mecanismos de fissuração e em particular para avaliar as condições da extensão das fissuras, portanto começaram algumas pesquisas sistemáticas (KONRAD e AYAD, 1997;STURE et al, 1999;KONRAD e CUMMINGS, 2001;ÁVILA et al, 2004).…”