Predicting Uniaxial Compression Strength (UCS) Using …
Predicting Uniaxial Compression Strength (UCS) Using Bulk Density for Kuala Lumpur Granite and Limestone Haryati Awang and Noor Akma Mohd Naru Abstract In engineering practice particularly in measuring strength properties of rock, uniaxial compressive strength (UCS) is considered as one of the key in characterizing rock material.
Evaluation of Damage Stress Thresholds and Mechanical
Several studies report an increase in uniaxial compressive strength (UCS) of granitic rocks with the decrease in grain size (Brace ... Zalooli A (2020) Crack evolution in damage stress thresholds in different minerals of granite rock. Rock Mech Rock Eng 53(3):1163–1178. Google Scholar Hart RD, Cundall PA (1992) Numerical modelling of ...
Rock mass properties
jointed rock masses, three 'properties' of the rock mass have to be estimated. These are: ξ uniaxial compressive strength of the intact rock pieces, ξ value of the Hoek-Brown constant for these intact rock pieces, and ξ value of the Geological Strength Index GSI for the rock mass. Intact rock properties
Estimation of uniaxial compressive strength of rock materials …
Uniaxial compressive strength (UCS) is one of the most widely used rock mechanical parameters in rock engineering like design and construction of foundations, tunneling, slope stability investigations, etc. UCS is also the only parameter to assess rock material strength in Rock Mass Rating (RMR) proposed by Bieniawski (1989).However, uniaxial compression …
What is UCS rock?
Unconfined compressive strength (UCS) of rock is the strength of the rock specimen when loaded along its longitudinal axis without lateral restraint. It is a parameter, which is very commonly used to define and model the strength of rocks in various engineering applications. ... The results of the strength tests show that granite has the ...
Relationship between uniaxial compression strength (UCS…
Download scientific diagram | Relationship between uniaxial compression strength (UCS) and Young's modulus. ... the selection of the proper rock type as a natural stone is of prime importance.
UCS values and corresponding failure modes of …
The dominant failure mode in granite up to the UCS value of 120 MPa is axial splitting (single extensional Failure modes observed on granite specimens under uniaxial compression. ... View in...
A review of test methods for uniaxial compressive strength …
The UCS is also a significant parameter for characterization of the mechanical properties of the rock/rock mass (Zhang et al., 2011).In scientific research, the UCS is useful to analyze the mechanical and fatigue behavior of rocks (Alizadeh et al., 2023; Haeri et al., 2023).A series of experiments and numerical simulations based on uniaxial compression test have …
UCS values and corresponding failure modes of granite …
UCS value along with the corresponding failure mode of the granite specimens is given in Table 2 and Fig. 7a. The dominant failure mode in granite up to the UCS value of 120 MPa is axial splitting ...
The Effect of Mineralogical Composition on Strength and Drillability …
The strength characteristics of a rock is a criterion for its ability to be drilled and fractured. The uniaxial compressive strength (UCS) is the most commonly used strength index in construction industry and in rock engineering projects. Therefore, a comprehensive knowledge on the factors that could influence the value of the compressive strength is essential in any rock …
Uniaxial compressive strength ( c) and deformation …
* Test results mainly from "Handbook of physical properties of rocks and minerals" by R.S. Carmichael (1989); some test results also from Lama and Vutukuri (1978). ** mi is the factor for …
Correlation Between Uniaxial Compressive Strength and Brazilian Tensile
The Hoek-Brown (H-B) criterion is one of the most commonly used rock failure criteria in recent years. This criterion includes a constant parameter called mi which is a fundamental parameter for ...
UNIAXIAL COMPRESSIVE STRENGTH OF THE GRANITE …
Although the compressive strength of granite is high, the 406 tensile strength is an order of magnitude lower; possible as low as 4% of the compressive strength, 407i.e., 8 MPa (Anikoh et al ...
Closed-Form Equation for Estimating Unconfined …
The use of three artificial neural network (ANN)-based models for the prediction of unconfined compressive strength (UCS) of granite using three non-destructive test indicators, …
Correlation of the point-load strength index to the UCS for …
The granite is in various states... | Digitization, Rocks and Granite | ResearchGate, the professional network for scientists. ... such as the unconfined compressive strength (UCS) of rock. Based ...
Prediction of Rock Abrasivity Index (RAI) and Uniaxial …
In rock, mining, and/or tunneling engineering, determination of uniaxial compressive strength (UCS) of rocks is an important and crucial task, which is often estimated from readily available index ...
ucs rock strength granite
Ucs Rock Strength Granite Predictive model for uniaxial compressive strength for . Determination of the uniaxial compressive strength (UCS) of rocks is an important task for rock and geotechnical engineering applications.Direct measurement is expensive, time consuming and even infeasible in some circumstances due to the difficulty in obtaining
Prediction of Rock Abrasivity Index (RAI) and Uniaxial …
Keywords Granite building stones · Rock abrasivity index (RAI) · Uniaxial compressive strength (UCS) · ... RAI is calculated by multiplying the stone's uniaxial compressive strength (UCS) and equivalent quartz content (EQC) according to Eq. 1 : Based on this equation, the RAI is calculated
Prediction of the strength and elasticity modulus of granite …
The uniaxial compressive strength (UCS) and Young's modulus (E) are important parameters in designing solutions to rock engineering problems. However, determination of these properties in the laboratory is expensive and time consuming. Therefore, many attempts have been made to estimate these properties indirectly by defining various correlations. These …
Prediction of compressive strength of granite: use of
Shang 2018). As a result, the determination of UCS for rock materials is in high demand within the engineering field, representing a foundational step preceding actual construc-tion. Following the guidelines established by the Interna-tional Society of Rock Mechanics (ISRM) (2007), the UCS value for a given rock material can be ascertained through
Prediction of uniaxial compressive strength of rock based …
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 UCS and are extensively applied for the indirect estimation of UCS. ... Granite belongs to igneous rock and is a common rock that ...
Reverse Size Effect of the Unconfined Compressive Strength …
The rock strength is largely determined by internal defects, ... Figure 5 shows the size effect curve depicting the UCS of granite, while Table 4 summarizes the average peak strength, standard deviation (SD), and coefficient of variation (CV) obtained from the unconfined compressive strength test.
Influence of rock heterogeneity on the correlation between …
Uniaxial compressive strength (UCS) has been widely referenced by the rock mass classification systems (i.e., RMR (rock mass rating) 1 or rock failure criteria (i.e., Hoek-Brown criterion) 2,3 ...
Evaluation of empirical estimation of uniaxial compressive strength …
The uniaxial compressive strength (UCS) of rock is an important parameter required for design and analysis of rock structures, and rock mass classification. ... To investigate the effectiveness of empirical equations for estimation of UCS, three rock types, i.e. granite, schist and sandstone belonging to igneous, metamorphic and sedimentary ...
A numerical integrated approach for the estimation of the …
In this section, the ability of the NPM to determine the UCS of different rock strengths is further investigated. To obtain rock samples of five different strengths, 50-mm cubic granite specimens were heat-treated at room temperature and 300, 400, 500, and 600 °C.
Point Load Index Applicability to Predicting Rocks' Uniaxial
In projects that are in contact with rocks, it is very important to determine the strength parameters of the rock correctly. While there are several approaches to this, the experimental approach is the most recommended. The strength of the rocks is determined by laboratory experiments. However, these experiments can sometimes be complicated, time …
Grades of unconfined compressive strength (Geological Society
The variation of quartz and feldspar contents affected the physical and mechanical properties of rock samples. Some studies (Sajid and Arif 2015; Tugrul and Zarif 1999;Yesiloglu-Gultekin et al ...
Uniaxial Compressive Strength
Uniaxial compressive strength (UCS) is a key physical test relevant to iron ore crusher design and rock geomechanics for mining. Tests are typically performed on intact lengths of NQ, HQ, or …
Predictive model for uniaxial compressive strength for Grade …
For optimum designs of rock-socketed piles in granitic rocks, the UCS of Grade III granite is possibly more critical than Grade I and Grade II. In this regards, reliable estimation of …
Average uniaxial compressive strength (UCS), tensile strength …
Download Table | Average uniaxial compressive strength (UCS), tensile strength and Young's modulus of the rock samples tested Unheated 400 • C 750 • C 1100 • C from publication: Effect of ...