Effects of Mineral Composition and Texture on Durability of Sulfate Rocks in Gachsaran Formation, Iran

Rahimi, Mohammad Reza; Mohammadi, Seyed Davoud; Beydokhti, Alireza Taleb

doi:10.1007/s10706-019-01173-9

Cited by 14 publications

(4 citation statements)

References 32 publications

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“…На блочной модели дискретных элементов изучалось влияние ранее существовавшей текстуры естественных трещин на форму коллектора при его гидрорасчленении [20]. Влияние минерального состава и текстуры породы на индекс эрозиоустойчивости (Slake Durability, SDI), а также зависимость между SDI некоторых горных пород и их инженерными свойствами исследованы в [21]. Взаимосвязь между текстурными и механическими свойствами различных горных пород исследована в [22].…”

Section: Introductionunclassified

Formation of synthetic structures and textures of rocks when simulating in COMSOL Multiphysics

Voznesensky

Kidima-Mbombi

2021

Min.Sci.Technol. (RUS)

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Rock texture and structure play an important role in the formation of the rock physical properties, and also carry information about their genesis. The paper deals with the simulation of geometric shapes of various structures and textures of rocks by the finite-element method (FEM). It is carried out by programmed detailing of the element properties and their spatial location in the simulated object. When programming structures, it is also possible to set the physical properties of various parts of the model, grids, initial and boundary conditions, which can be changed in accordance with the scenarios for numerical experiments. In this study, on the basis of FEM, simulation of various structures and textures of rocks with inclusions and disruptions was implemented in COMSOL Multiphysics in conjunction with Matlab. Such structures are used to conduct computer generated simulations to determine physical properties of geomaterials and study the effect on them of agents of various physical nature. The building of several models was considered: a rock specimen with inclusions in the form of ellipses of equal dimensions with different orientations; a sandstone specimen containing inclusions with high modulus of elasticity in cement matrix when deforming; a limestone specimen with fractures filled with oil and saline water when determining its specific electrical resistance. As an example of a fractured structure analysis, the influence of the filler on the electrical resistance of the limestone specimen containing a system of thin elliptical predominantly horizontal fractures was considered. The change in the lines of current flow at different ratios between the matrix and the fracture filler conductivities and their effect on the effective (averaged) conductivity of the rock specimen was clearly demonstrated. The lower conductivity of the fracture filler leads to increasing the length and decreasing the cross-section of the current flow lines that, in turn, leads to significant decrease in the conductivity of the fractured rock specimen. The higher filler conductivity results in a slight increase in the conductivity of the fractured specimen compared to that of the homogeneous isotropic specimen. The resulting structures can be used for numerical experiments to study physical properties of rocks.

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Section: Introductionunclassified

Formation of synthetic structures and textures of rocks when simulating in COMSOL Multiphysics

Voznesensky

Kidima-Mbombi

2021

Min.Sci.Technol. (RUS)

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“…The SDI test is required for sustainable, durable, reliable and safe engineering structures and provides a critical index parameter (I d ) for estimating the mechanical and chemical breakdown characteristics of rocks under cyclic (I d1 -I d4 ) drying and wetting conditions with various slaking fluids. The mineralogical and textural features of rocks and the slaking fluid properties greatly control the rock degradability [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] .The study of evaporitic rocks is valuable in basic geology, mineral deposits, petroleum geology, and engineering geology of which its dissolution has been a research highlight for several decades [17][18][19][20][21] . Subsurface evaporitic rocks are susceptible to being dissolved in water and forming cavities, sinkholes, and karst features, which can lead to unfortunate disasters due to the collapse of infrastructure, foundations, and dams [22][23][24][25][26] .…”

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“…composition. Rahimi et al 11 studied the mineral composition and texture effects on the durability of sulfate rocks, they applied slake durability test in 5 cycles of 10 min using ionized water under dry and saturated conditions, these tests have revealed that these sulfate rock contain gypsum and anhydrite and a rock's mineral composition affects how durable it is. Their study showed that in both dry and saturated conditions, the durability index drops as the gypsum percentage rises, and inversely, it rises when the anhydrite content rises.…”

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Effects of groundwater and distilled water on the durability of evaporitic rocks

Arman

Abdelghany

Mahmoud

et al. 2023

Sci Rep

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Evaporitic rock durability induced by groundwater cause several construction challenges, but representative experimental studies to evaluate such conditions are still missing. Therefore, this study intended to provide better and more realistic degradability features of evaporites with groundwater besides a comparison with distilled water as slaking fluids. Forty-eight evaporitic rock blocks were collected from Abu Dhabi area, United Arab Emirates. 96 slake durability index (SDI) tests were performed, 48 with each of the slaking fluids; groundwater and distilled water, and their textural, mineralogical, and geochemical attributes were also examined before and after the SDI tests. In comparison to mineralogical and textural modifications, slaking fluid had a greater impact on the chemical composition of evaporitic rock. The study shows that the degradability of evaporites with groundwater and distilled water indicates a wide range from very low to high. The mean weight loss values after four cycles with groundwater and distilled water vary from 11 to 77 and from 4 to 81 wt.%, respectively. Consequently, slaking with groundwater illustrates a wide range compared to the slaking with distilled water. This could be due to quick interactions between groundwater and evaporites and fast hydration-dehydration process than distilled water due to the chemical composition of the groundwater. It is recommended to investigate the attributes of evaporitic rocks as well as groundwater geochemistry for safe, cost-effective, and sustainable structures.

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Kinematic Stability Evaluation of the Cut Slopes Along Islamabad–Muzaffarabad Dual Carriageway (IMDC), Pakistan

Ahmed,

Akram

2024

Advances in Science, Technology &Amp; Innovation

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Effects of Mineral Composition and Texture on Durability of Sulfate Rocks in Gachsaran Formation, Iran

Cited by 14 publications

References 32 publications

Formation of synthetic structures and textures of rocks when simulating in COMSOL Multiphysics

Formation of synthetic structures and textures of rocks when simulating in COMSOL Multiphysics

Effects of groundwater and distilled water on the durability of evaporitic rocks

Kinematic Stability Evaluation of the Cut Slopes Along Islamabad–Muzaffarabad Dual Carriageway (IMDC), Pakistan

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