Influence of planes of anisotropy on physical and mechanical properties of freshwater limestone (Mudstone)

Ademović, Naida; Kurtović, Azra

doi:10.1016/j.conbuildmat.2020.121174

Cited by 13 publications

(6 citation statements)

References 33 publications

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“…Despite the environmental sensitivity of ice [1][2][3], experimental investigations considering various strain rates have been widely conducted to understand the mechanical behaviour of ice and establish a reliable material model. However, besides environmental factors, one important extra concern that should be stressed is that the mechanical properties of ice are significantly affected by the type of water: fresh, atmospheric, river, sea and distilled [1,[4][5][6][7]. Among these, ice generated from distilled water presents the highest strength [5].…”

Section: Introductionmentioning

confidence: 99%

“…However, the correct interpretation of the failure modes, due to different stress states, is complex with transparent material like ice. On the other hand, Brazilian tests, which were originally designed for brittle materials, are also capable to measure tensile strength of ice [2,6], as long as it is validated by the initial central failure of samples [10]. In particular, Brazilian tests by means of SHPB have been regarded as an effective way to obtain the tensile strength under high strain rates [3,5].…”

Section: Introductionmentioning

confidence: 99%

“…In particular, Brazilian tests by means of SHPB have been regarded as an effective way to obtain the tensile strength under high strain rates [3,5]. According to the existing experimental results [3,4,6], tensile strength of ice is around 1.0 MPa under the quasi-static conditions, while limited increase on the strength can be found with an increase of the strain rate and lowering of the temperature.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical modelling of ice: Mechanical behaviour of ice under high strain rates

Li²,

Manes³

et al. 2023

International Journal of Impact Engineering

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical modelling of ice: Mechanical behaviour of ice under high strain rates

Li²,

Manes³

et al. 2023

International Journal of Impact Engineering

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“…Over the past decades, several studies on Albanian heritage structures [ 15 ] and assessment and retrofitting of unreinforced masonry buildings have been conducted by the authors [ 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Physical-Mechanical Properties of Stone Masonry of Gjirokastër, Albania

et al. 2021

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In addition to reinforced concrete and steel buildings, a large part of the existing building stock in Europe is made of stone masonry. Prediction of the structural behavior requires the development of a systematic material characterization of the mechanical properties and structural details (units, arrangement, bonding, inter-connection). This study aims to analyze the mechanical and physical behavior of building stones in the historical city of Gjirokastër, Albania, known also as the Stone City. A thorough investigation of the regional stone quarries was performed, and the collected samples were cut into regular prismatic specimens for further analysis. The experimental campaign consisted of the determination of flexural strength and compressive strength, water absorption, porosity, specific gravity as well as structural analysis of the masonry material, using the MQI (Masonry Quality Index) method. The test results showed that there is a large scattering in the values of the mechanical and physical stone properties such as compressive strength varying from 20 to 115 MPa and flexural strength from 8 to 25 MPa. However, the analysis of the masonry material revealed a satisfactory structural performance, based on a frequent, systematic respect of the good construction practices (i.e., the rules of the art) in Gjirokastër.

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“…Sandstone, schist and shale are generally regarded as transversely isotropic (TI) materials [1]. Anisotropy in rock structures leads to anisotropy in physical and mechanical properties, which can significantly affect the stability and safety of engineered structures such as underground chambers and rock slopes and should be considered in the design and construction processes [2][3][4]. Rocks exist in complex geological and hydrogeological environments and their moisture state are often in a dynamic state [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Variation in Anisotropy with Dehydration in Layered Sandstone

Liu

Jia

2021

Water

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Anisotropy in rock could significantly affect the stability and safety of rock engineering by differing physical and mechanical properties of rock in different directions. Another major factor for physical and mechanical properties of rock is moisture state, however, whether anisotropy can be altered by it remains unclear. This study investigated variation in anisotropy (by conduct-ing ultrasonic tests) with moisture state (measured by nuclear magnetic resonance) in layered sandstones, and interpreted the phenomenon from the perspective of linking dehydration with pore structure of rock. The results show that (1) sandstone with more obvious bedding bears stronger anisotropy, the P-wave velocity in the perpendicular direction is much lower than that in the parallel direction. (2) The anisotropy index fluctuates around 1 with dehydration of sandstone without obvious bedding, while the anisotropy in sandstone with obvious bedding was significantly enhanced be dehydration. (3) During dehydration bulk water escaped firstly then capillary water and bound water. (4) Dehydration is controlled by the bedding structure. The different dehydration rates of pore water in different directions inevitably lead to heterogeneity in moisture state that change the anisotropy of the rock, which is reflected by the non-synchronous changes in P-wave velocities in different directions.

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Influence of planes of anisotropy on physical and mechanical properties of freshwater limestone (Mudstone)

Cited by 13 publications

References 33 publications

Numerical modelling of ice: Mechanical behaviour of ice under high strain rates

Numerical modelling of ice: Mechanical behaviour of ice under high strain rates

Physical-Mechanical Properties of Stone Masonry of Gjirokastër, Albania

Variation in Anisotropy with Dehydration in Layered Sandstone

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