compressive strength of different rocks

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compressive strength of different rocks

Empirical Estimation of Uniaxial Compressive Strength of Rock

The tables show that regression equations using physical properties to estimate UCS for the three types of rock (i.e., igneous, sedimentary, and metamorphic Rock engineering tasks like tunnelling, dam and building construction, and rock slope stability rely heavily on properly estimating the rock’s uniaxial Prediction of Uniaxial Compressive Strength of Rocks from

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Azarshahr travertine compression strength prediction based

The estimation of rock compressive strength typically involves various geotechnical in-situ or laboratory tests, including the uniaxial compressive strength Introduction. The uniaxial compressive strength (UCS) is one of the most important physical and–mechanical characteristic parameters of rock masses in civil and Comparative Evaluation of Empirical Approaches and

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Estimating uniaxial compressive strength of rocks using

The aim of this paper is to estimate the uniaxial compressive strength (UCS) of rocks with different characteristics by using genetic expression programming (GEP). Micromechanical models (Paliwal & Ramesh, 2008) demonstrate that the behavior of the compressive strength of rocks from quasi-static to high strain rates can Dynamic Compressive Strength and Fragmentation in Felsic Crystalline Rocks

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Applied Sciences Free Full-Text Experimental Investigation

The effectiveness of the proposed method has been tested and verified by numerical modelling and in situ triaxial compressive experiments. Cao et al. examined The direct measurement of uniaxial compressive strength (UCS) as one of the main important rock engineering parameters is destructive, cumbersome, difficult and costly. Therefore, the prediction of this parameter using simpler, cheaper indirect methods is of interest. In this paper, the UCS was predicted using a developed hybrid intelligent Prediction of Uniaxial Compressive Strength of Different Quarried Rocks

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Determining Dry and Saturated Strength of Rocks by Using

Determining the geotechnical properties of rocks is an essential factor in different engineering projects including dams, tunnels and mining (Tuğrul and Zarif 1999; Diamantis et al. 2014; Mishra et al. 2019).The strength of different rocks is a substantial characteristic when investigating the engineering behavior of rocks in geotechnical Uniaxial compressive strength (UCS) of an intact rock is an important geotechnical parameter for engineering applications. Using standard laboratory tests to determine UCS is a difficult, expensive and Application of statistical methods for predicting

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Compressive strength values of rock materials. Download

In general, rocks are composed of different percentages of minerals with various grain sizes, grain shapes, and micro-fabric features (Aligholi et al. 2018).The uniaxial compressive strength (UCS) of rocks is one of the key parameters for evaluating the safety and stability of civil and mining structures. In this study, 386 rock samples containing four properties named the load strength (PLS), the porosity (Pn), the P-wave velocity (Vp), and the Schmidt hardness rebound number (SHR) are Comparative Evaluation of Empirical Approaches and

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Lithological Control on the Estimation of Uniaxial Compressive Strength

Uniaxial compressive strength (UCS) is the most fundamental physico–mechanical parameter used for any rock mass classification in geotechnical and geological engineering. However, determining UCS is a very tough, expensive, time consuming and destructive method and requires experienced workers. On the other Despite extensive research on the size effect of intact rock, very few have included the weak rocks with low uniaxial compressive strength (UCS). Thus, in this study, the size-dependent behaviour of two different weak rocks namely, Gambier limestone and artificial rock with uniaxial compressive strength of less than 10 MPa were investigatedSize-dependent Behaviour of Weak Intact Rocks SpringerLink

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Dynamic response and failure characteristics of combined rocks

The dynamic compressive strength and elastic modulus of combined rock–coal is lower than the average value of single rock and coal, while the ultimate strain and strain rate of combined coalRock tensile strength is one of the critical mechanical properties governing the stability of rock structures, such as tunnels, caverns, and slopes. The tensile strength of rocks is usually ten times lower than the compressive strength (Hoek 1968), making underground openings vulnerable under tensile stress conditions (Diederichs and Kaiser Loading Rate and Mineralogical Controls on Tensile Strength of Rocks

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Prediction of uniaxial compressive strength and modulus of

Its durability as an essential property has been used to determine its different applications for centuries. In rock engineering, uniaxial compressive strength (UCS) and the young’ modulus of elasticity (E) are two main factors that have been widely considered to assess travertine and other rocks’ durability.where σ B means the Brazilian tensile strength; P is the concentrated line load; D and t are sample diameter and thickness, respectively; and π indicates the circular constant.. The Brazilian test has been widely used in tensile strength determination of rock materials (Patel and Martin 2018; Stirling et al. 2013; Vervoort et al. Mechanical behavior of different sedimentary rocks in the

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Rock Strength an overview ScienceDirect Topics

The tensile strength of rock is defined as the pulling force, required to rupture a rock sample, divided by the sample’s cross-sectional area. The tensile strength of rock is very small and is of the order of 0.1 times the compressive strength. Thus, a rock material is more likely to fail in tension than in compression.Propose stacking models to estimate uniaxial compressive strength in different rocks and verify their application. Abstract. Uniaxial compressive strength (UCS) of rock is an essential parameter in geotechnical engineering. Point load strength (PLS), P-wave velocity, and Schmidt hammer rebound number (SH) are more easily obtained than Prediction of uniaxial compressive strength of rock based on

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Several machine learning techniques comparison for the

In engineering practices, it is critical and necessary to either measure or estimate the uniaxial compressive strength (UCS) of the rock. Measuring the UCS of rocks requires comprehensive studiesMeasuring-while-drilling has been considered as an effective method to determine the mechanical properties of rock. In this paper, drilling models are improved for predicting the rock strength on the basis of nonlinear M-C criterion. The analytical relationship between the ratio of unconfined compressive strength to tensile strength and Determining Method of Tensile Strength of Rock Based on

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Comparison of artificial intelligence and multivariate

Uniaxial compressive strength is one of the most important mechanical characteristics of rocks, and its prediction is essential in most rock engineering projects. Recently, several types of research have been conducted regarding the relationship between the petrophysical and geomechanical properties of rocks and geophysical The physico-mechanical properties of five different intact rock types including sandstone, arkoses and limestone were determined through standardized laboratory tests. Ninety six specimens were tested to obtain the relationships between P-wave velocity (Vp), dry unit weight (DUW), uniaxial compressive strength (UCS), point Correlating physico-mechanical properties of intact rocks

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Special Issue "Mechanical Properties of Rocks under

At present, there are many studies of the microscopic characteristics of rocks under different cooling methods, but few on the mechanical characteristics of rocks under the same conditions. The change in the mechanical properties (compressive strength and elastic modulus) of coal caused by methane adsorption can be described by Uniaxial compressive strength (UCS) of rocks is the most commonly used parameter in geo-engineering application. However, this parameter is hard for measurement due to a time consuming and requires expensive equipment. Therefore, obtaining this value indirectly using non-destructive testing methods has been a frequently preferred method A New Predictive Model for Uniaxial Compressive Strength of Rock

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Experimental study on the competing effects of strain rate

The correlations between rock compressive strength, including static compressive strength σ cs and dynamic compressive strength σ cd, and water-weakening factors f w with strain rate are derived. The experimental AE waveform data is analyzed using a new methodology named statistical analysis of dominant frequency, from which

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