Swelling behavior of volcanic rocks under cyclic wetting and drying

Vergara, Maximiliano R.; Triantafyllidis, Theodoros

doi:10.1016/j.ijrmms.2015.08.021

Cited by 39 publications

(14 citation statements)

References 10 publications

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“…These minerals would swell after absorbing water and eventually lead to rock damage and destruction [66][67][68][69][70]. The cyclic dry-wet treatment process would cause repeated expansion and contraction of clay components, and moisture fluctuation is the main reason [71][72][73][74]. The volume of expanded clay changes with the fluctuation of water, which causes the air pressure in the pores to rise sharply, and finally ruptures to form cracks.…”

Section: Clay Content and Swellingmentioning

confidence: 99%

Deterioration of Physical and Mechanical Properties of Rocks by Cyclic Drying and Wetting

et al. 2021

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Both surface and underground rocks in nature often undergo repeated drying and wetting. The dry-wet cycle is a weathering effect that includes physical and chemical processes, which has varying degrees of degradation effects on the physical and mechanical properties of rocks. This paper analyzes and discusses this kind of rock degradation based on the existing literature data. First, the deterioration degree of various physical and mechanical properties (including density, P-wave velocity, porosity, static and dynamic compressive/tensile strength, and fracture toughness) is summarized as the number of dry-wet cycles increases. Secondly, the possible degradation mechanism of the dry-wet cycle is explained in terms of clay mineral swelling, solute migration, and microcrack evolution. Then, the damage constitutive model of the rock after cyclic dry-wet treatment is introduced. Finally, the issues that need to be studied in the future are put forward.

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Section: Clay Content and Swellingmentioning

confidence: 99%

Deterioration of Physical and Mechanical Properties of Rocks by Cyclic Drying and Wetting

et al. 2021

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“…(1) maximum swelling pressure test (ISRM 1999) and (2) the cyclic swelling test with controlled deformation (Vergara and Triantafyllidis 2015). The maximum swelling pressure test was performed on both powder and intact rock specimens, whereas the cyclic oedometer test was applied on the intact rock specimen.…”

Section: Oedometer Swelling Testsmentioning

confidence: 99%

“…Apparatus for performing oedometer swelling tests (1) Rigid frame, (2) ring and specimen, (3) watering cell, (4) porous metal sintered plates, (5) manual spindle, (6) load cell and (7) dial gauges(Vergara and Triantafyllidis 2015) …”

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confidence: 99%

Investigation on the Effect of Cyclic Moisture Change on Rock Swelling in Hydropower Water Tunnels

et al. 2020

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“…Many valuable achievements about the influence of drying and wetting cycles to various rocks have been studied by domestic and foreign researchers. Liu and Deng et al [6,7] examined the deterioration laws of sandstone under waterrock interaction, including the changes of compressive strength and rheological properties; Hua et al [8] studied the fracture toughness of sandstone subjected to cyclic wetting and drying; the swelling behavior of volcanic rocks or mudstone and stabilized expansive soils has been studied by Vergara et al, Doostmohammadi et al, and Rao et al, respectively [9][10][11]; the effects of acid rain on the mechanical properties and the stability of reservoir slope slump under the condition of acid rain were examined by Liu et al [12][13][14]; Zhao et al [15] have investigated the change laws of tensile strength of sandstone with low clay mineral content; Liu et al [16] have studied the crack growth mechanism, especially subcritical crack under water-rock interaction; and Saleh-Mbemba et al [17] examined the water retention of tailings behavior. As for altered rock, the hydromechanical properties of altered rock have been analyzed by Wang et al [18], and Kohno et al and Chen et al [19,20] have studied the relations between point load strength index and UCS (uniaxial compressive strength) of hydrothermally altered soft rock.…”

Section: Introductionmentioning

confidence: 99%

Damage Features of Altered Rock Subjected to Drying-Wetting Cycles

Qin

Chen

2018

Advances in Civil Engineering

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An abandoned open pit was used as a tailing pond for a concentrating mill, with the height of the water surface subject to cyclic fluctuation. e effects of drying and wetting cycles on the mechanical parameters of pit rock were tested. Interactions of the hydrochemical environment, due to the dissolution of tailings, and drying and wetting cycles caused degradation of mechanical properties in the rock. It was found that uniaxial compressive strength and elastic modulus decreased as the number of dry/wet cycles increased. e quantitative relationship between the mechanical parameters and the number of dry/wet cycles was indicated by an exponential function. In addition to uniaxial testing, cohesion and the internal friction angle were determined through triaxial testing.e shear strength index deteriorated under the drying and wetting cycles. e hydrochemical environment also negatively affected the mechanical parameters. Potential effects between drying and wetting cycles and slope displacement were analyzed by on-site monitoring.e results show that the displacement increased because of the drying and wetting cycles, which may lead to sudden failure of the slope.

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Swelling behavior of volcanic rocks under cyclic wetting and drying

Cited by 39 publications

References 10 publications

Deterioration of Physical and Mechanical Properties of Rocks by Cyclic Drying and Wetting

Deterioration of Physical and Mechanical Properties of Rocks by Cyclic Drying and Wetting

Investigation on the Effect of Cyclic Moisture Change on Rock Swelling in Hydropower Water Tunnels

Damage Features of Altered Rock Subjected to Drying-Wetting Cycles

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