A Bounding Surface Plasticity Model for Intact Rock Exhibiting Size-Dependent Behaviour

Masoumi, Hossein; Douglas, Kurt; Russell, Adrian R.

doi:10.1007/s00603-015-0744-8

Cited by 34 publications

(12 citation statements)

References 62 publications

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“…Section C presents a best fit set of constants based on eight different measurements by Hart and Wang (1995) in which water (K f = 2.3 GPa) was the pore fluid. Section D of the table is derived from Bertuzzi and Pells (2002); Bertuzzi (2014) (1) , Zhang et al (2016), Zhang et al (2018) (2) , and Masoumi et al (2016) (3) , who used a 50-mm core (the normal core test size is 42 mm) for the Gosford Sandstone. a Values calculated using variations of equation (3). whereas the drained Poisson's ratio is…”

Section: Undrained Versus Drained Groundwater Response To Stress and mentioning

confidence: 99%

Utilizing the Impact of Earth and Atmospheric Tides on Groundwater Systems: A Review Reveals the Future Potential

McMillan

Rau

Timms

et al. 2019

Reviews of Geophysics

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Groundwater extraction is increasing rapidly in many areas of the world, causing serious impacts such as falling water tables, ground surface subsidence, water quality degradation, and reduction of stream baseflow on which many ecosystems depend. Methods for understanding and predicting the impacts of groundwater extraction generally lack detailed spatial and temporal knowledge of the subsurface hydrogeomechanical properties. This review provides a comprehensive understanding of Earth and atmospheric tides and their impact on subsurface pore pressure. First, we evaluate the global occurrence of Earth and atmospheric tides. Then, we illustrate their impact on the groundwater response and connect this with the theory of poroelasticity, which underpins quantitative analyses. Finally, we review methods that utilize these impacts to characterize groundwater systems and to quantify their hydrogeomechanical properties. We conclude by highlighting their potential as passive and low‐cost investigation techniques and by outlining the research and developments required to progress and make analyses readily available. Thus, hydrogeomechanical properties of subsurface systems could be obtained at unprecedented spatial and temporal resolution, adding additional value to commonly acquired groundwater and atmospheric pressure data.

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Section: Undrained Versus Drained Groundwater Response To Stress and mentioning

confidence: 99%

Utilizing the Impact of Earth and Atmospheric Tides on Groundwater Systems: A Review Reveals the Future Potential

McMillan

Rau

Timms

et al. 2019

Reviews of Geophysics

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“…One example relates to the room and pillar mining method, which relies on the strength of pillars to support underground openings. However, pillar sizes and thus their strengths can vary significantly (Masoumi, Douglas & Russell, 2016). Laboratory strength measurements made on small samples are to be corrected so that they can be suitably applied to the design of larger rock structures.…”

Section: Introductionmentioning

confidence: 99%

“…Analytical methods can be divided into three categories: statistical theories, empirical and semi-empirical models, and theories based on fracture mechanics. The following studies used statistical theories: Weibull (1939), Bieniawski (1968), Pretorius and Se (1972), Bazant (Bazant & ASCE, 1984;Bazant & Chen, 1997;Bazant & Planas, 1998;Bazant & Oh, 1983), Darlington and Ranjith (2011), Manouchehrian, Sharifzadeh and Hamidzadeh Moghadam (2012) and Masoumi et al (2015Masoumi et al ( , 2016. The empirical and semi-empirical size-effect models were utilized in the studies by Mogi (1962), Hoek and Brown (1980), Yoshinaka et al (2008) and Darlington and Ranjith (2011).…”

Section: Introductionmentioning

confidence: 99%

“…The empirical and semi-empirical size-effect models were utilized in the studies by Mogi (1962), Hoek and Brown (1980), Yoshinaka et al (2008) and Darlington and Ranjith (2011). Theories based on fracture mechanics were used in studies by Griffith (1924), Adey and Pusch (1999), Bazant (1993), Carpinteri (Carpinteri, 1994;Carpinteri et al, 1995;Carpinteri & Mainardi, 1997) and Masoumi et al (2016). In the areas of rock mechanics and solid mechanics, the most notable analytical models proposed to predict specimen size-effect on uniaxial compressive strength include the Weibull statistical theory (Weibull, 1951), the Hoek and Brown empirical model (Hoek & Brown, 1980), the multi-fractal scaling model (Carpinteri et al, 1995), the specimen size-effect model using the fracture energy theory (Bazant & ASCE, 1984), the fractal fracture size-effect model (Bazant, 1997) and the unified size-effect model for intact rock (Masoumi et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Size-dependent compressive strength properties of hard rocks and rock-like cementitious brittle materials

Darbor

Faramarzi

Sharifzadeh

2018

Geosystem Engineering

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Size-dependent compressive strength properties of hard rocks and rock-like cementitious brittle materialsRock engineering projects have always been constructed on different (from micro to macro) scales. This makes understanding rock behavior at different scales essential. In previous statistical studies on igneous hard rocks, the correlation of uniaxial compressive strength values in different diameters with estimations of specimen size-effect models was weak. In view of this knowledge gap, the present research proposed a model of appropriate size-effect in igneous hard rocks. This research also aimed at discussing the effect of specimen size and grain size on the uniaxial compressive strength of concrete specimens. To achieve these aims, studies were conducted in parallel on the previous and new experimental data.Non-linear regression analysis on igneous hard rocks indicated that there is a better agreement between the outputs of the multifractal scaling model and the specimen size-effect model using the fracture energy theory and the results of previous laboratory tests. In addition, in the experimental study, the grain size effect on the predictions of specimen size-effect models was exhibited. The results of this research can be used for designing engineering projects at different scales.

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“…This theory, firstly proposed by Mroz [8] and Dafalias et al [9,10] to simulate metal behaviors, was successively applied by Bardet [11] on saturated sands and later on followed by Gajo and Muirwood [12] as well as by Yu and Khong [13]. BSP theory was later extended to partially saturated materials in order to describe suction effects [14][15][16][17][18][19]. In addition, BSP theory is also applied on geomaterials other than soils due to its versatility, such as rockfills and clay-fouled ballast [20,21].…”

Section: Introductionmentioning

confidence: 99%

Modelling the poroplastic damageable behaviour of earthen materials

Wong

Fabbri

et al. 2018

Mater Struct

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This paper presents a new constitutive model on the poroplastic behaviour of earthen materials accounting for stiffness degradation, using the approach of continuum damage mechanics. The poroplastic behaviour is modelled based on the bounding surface plasticity (BSP) theory and the concept of effective stress while isotropic damage is modelled using a scalar variable. Plastic flow and damage evolution occur simultaneously in a coupled process which take into account the impact of suction. The model was successfully validated against results of triaxial compression tests performed at different relative humidities and confining pressures. Despite the relatively small number of material parameters, this model can reproduce the essential features of earthen materials behaviour observed experimentally: suctioninduced hardening and stiffening, post-peak softening, as well as the progressive transition from contractant to dilatant volumetric behaviour. Use of the BSP theory allows to reproduce a smooth stress-strain relation as experimentally observed, instead of an abrupt change upon plastic yielding predicted by classic elastoplastic models. Furthermore, the present model also furnishes a quantitative description on the degradation of elastic properties hitherto not accounted for, thanks to the additional scalar damage variable. Keywords Unsaturated rammed earth Á Bounding surface plasticity Á Suction Á Damage Á Degradation The original version of this article was revised due to a retrospective Open Access order.

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A Bounding Surface Plasticity Model for Intact Rock Exhibiting Size-Dependent Behaviour

Cited by 34 publications

References 62 publications

Utilizing the Impact of Earth and Atmospheric Tides on Groundwater Systems: A Review Reveals the Future Potential

Utilizing the Impact of Earth and Atmospheric Tides on Groundwater Systems: A Review Reveals the Future Potential

Size-dependent compressive strength properties of hard rocks and rock-like cementitious brittle materials

Modelling the poroplastic damageable behaviour of earthen materials

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