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Journal articles on the topic 'GEOMATERIAL SUBJECT'

Author: Grafiati
Published: 11 September 2023

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1

Kim, Minkwan, and Joo Hyoung Lee. "STUDY ON NONLINEAR PAVEMENT RESPONSES OF LOW VOLUME ROADWAYS SUBJECT TO MULTIPLE WHEEL LOADS / NETIESINĖS KELIO DANGOS PRIKLAUSOMYBĖS NUO MAŽO INTENSYVUMO KELIŲ, VEIKIAMŲ DAUGKARTINĖMIS RATŲ APKROVOMIS, TYRIMAS." Journal of Civil Engineering and Management 17, no. 1 (2011): 45–54. http://dx.doi.org/10.3846/13923730.2011.554012.

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This paper describes numerical analyses on low volume roads (LVRs) using a nonlinear three-dimensional (3D) finite element model (FEM). Various pavement scenarios are analyzed to investigate the effects of pavement layer thicknesses, traffic loads, and material properties on pavement responses, such as surface deflection and subgrade strain. Each scenario incorporates a different combination of wheel/axle configurations and pavement geomaterial properties to analyze the nonlinear behavior of thinly surfaced asphalt pavement. In this numerical study, nonlinear stress-dependent models are employ
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2

Bista, Hemanta, Sadrish Panthi, and Liangbo Hu. "Chemo-Mechanical Couplings at Granular Contact: The Effect of Mineral Dissolution and Precipitation across the Scales." Geotechnics 2, no. 1 (2022): 158–70. http://dx.doi.org/10.3390/geotechnics2010007.

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Strong interactions between mechanical deformation and chemical reactions may play a critical role in the response of geomaterials or geological systems to evolving environmental circumstances that may occur in both natural and engineered processes. The present study focuses on mineral dissolution and precipitation at the intergranular contact whose consequences are often manifested at the macro-scale where the mechanical and transport properties of the geomaterial may be altered. Discrete element modeling is employed to explore two applications involving such mineral transformations. The firs
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3

Rammelkamp, Kristin, Susanne Schröder, Alessandro Pisello, Gianluigi Ortenzi, Frank Sohl, and Vikram Unnithan. "Explorative Data Analysis Methods: Application to Laser-Induced Breakdown Spectroscopy Field Data Measured on the Island of Vulcano, Italy." Sensors 23, no. 13 (2023): 6208. http://dx.doi.org/10.3390/s23136208.

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One of the strengths of laser-induced breakdown spectroscopy (LIBS) is that a large amount of data can be measured relatively easily in a short time, which makes LIBS interesting in many areas, from geomaterial analysis with portable handheld instruments to applications for the exploration of planetary surfaces. Statistical methods, therefore, play an important role in analyzing the data to detect not only individual compositions but also trends and correlations. In this study, we apply two approaches to explore the LIBS data of geomaterials measured with a handheld device at different locatio
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4

Nova, R., R. Castellanza, and C. Tamagnini. "A constitutive model for bonded geomaterials subject to mechanical and/or chemical degradation." International Journal for Numerical and Analytical Methods in Geomechanics 27, no. 9 (2003): 705–32. http://dx.doi.org/10.1002/nag.294.

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Pathak, Shashank, and G. V. Ramana. "On Stress–Strain Function of Geomaterials Subjected to Blast-Loads." Indian Geotechnical Journal 51, no. 3 (2021): 520–38. http://dx.doi.org/10.1007/s40098-021-00527-6.

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6

Wang, Lu Jun, and Zhi Yong Ai. "Transient Thermal Response of a Multilayered Geomaterial Subjected to a Heat Source." KSCE Journal of Civil Engineering 22, no. 9 (2018): 3292–301. http://dx.doi.org/10.1007/s12205-018-2035-x.

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7

Mehra, Sagar, and Ashutosh Trivedi. "Pile Groups Subjected to Axial and Torsional Loads in Flow-Controlled Geomaterial." International Journal of Geomechanics 21, no. 3 (2021): 04021002. http://dx.doi.org/10.1061/(asce)gm.1943-5622.0001928.

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8

Zhu, Wan Cheng, K. T. Chau, and Chun An Tang. "Numerical Simulation on Failure Patterns of Rock Discs and Rings Subject to Diametral Line Loads." Key Engineering Materials 261-263 (April 2004): 1517–22. http://dx.doi.org/10.4028/www.scientific.net/kem.261-263.1517.

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Brazilian test is a standardized test for measuring indirect tensile strength of rock and concrete disc (or cylinder). Similar test called indirect tensile test has also been used for other geomaterials. Although splitting of the disc into two halves is the expected failure mode, other rupture modes had also been observed. More importantly, the splitting tensile strength of rock can vary significantly with the specimen geometry and loading condition. In this study, a numerical code called RFPA2D (abbreviated from Rock Failure Process Analysis) is used to simulate the failure process of disc an
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9

Murray, Ian, and Alessandro Tarantino. "Mechanisms of failure in saturated and unsaturated clayey geomaterials subjected to (total) tensile stress." Géotechnique 69, no. 8 (2019): 701–12. http://dx.doi.org/10.1680/jgeot.17.p.252.

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10

Zhou, Xiao-Ping, and Chang-Qing Li. "Permeability prediction of porous geomaterials subjected to freeze-thaw cycles based on 3D reconstruction technology." Cold Regions Science and Technology 181 (January 2021): 103180. http://dx.doi.org/10.1016/j.coldregions.2020.103180.

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11

Çoşkun, Canberk, and Tamer Rızaoğlu. "Investigation of the Physical, Mechanical and Aesthetic Characteristics of Terrazo Tiles Obtained from Different Rock Aggregates." Multidisciplinary Aspects of Production Engineering 3, no. 1 (2020): 477–90. http://dx.doi.org/10.2478/mape-2020-0040.

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AbstractThroughout history, people have covered the floors of the buildings with materials such as carpet, rock pieces, wood, mosaic, ceramic and tile according to the conditions of the day due to their desire to protect them from moisture, make them hygienic environment easy to clean and give an aesthetic appearance. The merging of mechanization with cement based materials with the industrial revolution in the 19th century has brought along the development of diversity and different production methods in these floor covering materials. One of these coating materials is terrazo tiles that form
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12

Bulíček, Miroslav, Tomáš Los, Yong Lu, and Josef Málek. "On planar flows of viscoelastic fluids of Giesekus type." Nonlinearity 35, no. 12 (2022): 6557–604. http://dx.doi.org/10.1088/1361-6544/ac9a2c.

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Abstract Viscoelastic rate-type fluid models of higher order are used to describe the behaviour of materials with complex microstructure: geomaterials like asphalt, biomaterials such as vitreous in the eye, synthetic rubbers such as styrene butadiene rubber. A standard model that belongs to the category of viscoelastic rate-type fluid models of the second order is the model due to Burgers, which can be viewed as a mixture of two Oldroyd-B models of the first order. This viewpoint allows one to develop the whole hierarchy of generalized models of the Burgers type. We study one such generalizati
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13

Daag, Arturo S., Oliver Paul C. Halasan, Arielle Anne T. Magnaye, Rhommel N. Grutas, and Renato U. Solidum. "Empirical Correlation between Standard Penetration Resistance (SPT-N) and Shear Wave Velocity (Vs) for Soils in Metro Manila, Philippines." Applied Sciences 12, no. 16 (2022): 8067. http://dx.doi.org/10.3390/app12168067.

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The measurement of the shear wave velocities (Vs) of soils is an important aspect of geotechnical and earthquake engineering, due to its direct relation to the shear modulus (G), which in turn influences the stress–strain behavior of geomaterials. Vs can be directly measured or estimated using a variety of onsite tests or in a laboratory. Methods such as downhole PS logging require boreholes and may not be logistically and economically feasible in all situations. Many researchers have estimated Vs from other geotechnical parameters, such as standard penetration test resistance (SPT-N), by mean
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14

Pękala, Agnieszka, Michał Musiał, and Tomasz Galek. "Pyritization in Stone-Building Materials Modeling of Geochemical Interaction." Sustainability 14, no. 20 (2022): 13206. http://dx.doi.org/10.3390/su142013206.

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Stone-building materials, despite their natural origin, must be tested for the concentration of trace elements necessary to assess their impact on the environment and humans. In addition to basic research determining their mineral composition and structural and textural features, it is important to analyze the geochemical interactions between the material matrix and the concentration of elements that have a negative impact on the surrounding natural environment and our health. In the presented study, mineralogical and geochemical studies were carried out on the Carpathian sandstones. It was sh
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15

Nguyen, Trung-Kien, Thanh-Trung Vo, and Nhu-Hoang Nguyen. "DEM investigation on strain localization in a dense periodic granular assembly with high coordination number." Frattura ed Integrità Strutturale 16, no. 59 (2021): 188–97. http://dx.doi.org/10.3221/igf-esis.59.14.

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Strain localization is one of key phenomena which have been studied extensively in geomaterials and for different kinds of materials including metals and polymers. This well-known phenomenon appears when structure/material is closed to failure. Theoretical, experimental, and numerical research have been dedicated to this subject for a long while. In the numerical aspects, strain localization inside the periodic granular assembly has not been well studied in the literature. In this paper, we investigate the occurrence and development of strain localization within a dense cohesive-frictional gra
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16

Wang, X. B. "Residual Stress Distribution in Pure Bending Beam Subjected to Tensile Failure on One Side." Materials Science Forum 524-525 (September 2006): 253–58. http://dx.doi.org/10.4028/www.scientific.net/msf.524-525.253.

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The stress distribution on the midsection of a pure bending beam where tensile strain localization band initiates on the tensile side of the beam and propagates within the beam is analyzed. Using the static equilibrium condition on the section of the midspan of the beam and the assumption of plane section as well as the linear softening constitutive relation beyond the tensile strength, the expressions for the length of tensile strain localization band and the distance from the tip of the band to the neutral axis are derived. After superimposing a linear unloading stress distribution over the
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17

Martín, M. Martín, Sanz de Galdeano, and S. Moliner Aznar. "The Geological Heritage of Salobreña (South Spain): example of a touristic area." American Research Journal of Earth Science 2, no. 1 (2021): 1–17. http://dx.doi.org/10.21694/2642-3022.21001.

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Salobreña consist of a touristic area with a typical Andalusian white town built on a hill and crowned with a Castle from the medieval era of Moors occupation. The urban area is bordered by fields of tropical crops and fruit trees that, together with its location by the sea, confer on Salobreña a beautiful postcard. These features, as a whole, are an attraction for visitors. Although the authorities are very interested in developing the beach tourism and displaying and protecting the historical center of the town, the interest in geological heritage is negligible. So, this paper tries to expos
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18

Alvarez-Borges, Fernando, Genoveva Burca, Robert Atwood, Andrew James, Mark Wolstenholme, and Sharif Ahmed. "Correlative neutron and X-ray tomography imaging of pile installation in chalk." Géotechnique, July 25, 2022, 1–32. http://dx.doi.org/10.1680/jgeot.21.00318.

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Neutron and X-ray tomography (NCT and XCT, respectively) are imaging techniques increasingly being applied in geomechanics research. They are used to non-destructively reveal different microstructural aspects of geomaterials: XCT is often used to observe/quantify differences in density or porosity, while NCT reveals the presence and distribution of hydrogenous materials such as water. The correlated use of NCT and XCT for geomechanics and geotechnics research is in its infancy. To this date, very few experiments have been carried out that combine both techniques, and none have been used to inv
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19

Farrag, Rabie. "Shear Demands of Rock-Socketed Piles Subject to Cyclic Lateral Loading." DFI Journal The Journal of the Deep Foundations Institute 14, no. 2 (2020). http://dx.doi.org/10.37308/dfijnl.20200526.223.

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The determination of internal pile reactions is critical to designing and assessing the structural performance of deep foundations. Internal shear and moment profiles strongly depend on lateral pile-soil interaction, which in turn depends on pile and soil stiffnesses as well as the stiffness contrast between soft and stiff strata, such as occurs at a soil/rock interface. At zones of strong geomaterial stiffness contrast, Winkler-spring-type analyses predict abrupt changes in the internal pile reactions for laterally-loaded foundation elements. In particular, the sudden deamplification of inter
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