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Predicting the unconfined compressive strength of granite using …
This paper reports the results of advanced data analysis involving artificial neural networks for the prediction of the unconfined compressive strength of granite using only two non-destructive test indexes. A data-independent site-independent unbiased database comprising 182 datasets from non-destructive tests reported in the literature was compiled and used to train and develop …
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Prediction of unconfined compressive strength of rock surrounding …
pressive strength values, a description of the rock type is ... Dolomite 143 19. Marble 135. ... Assessments of failure mode and strength behavior of unconfined anisotropic rock mass are difficult ...
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Physical parameters, tensile and compressive …
This work examines the compressive strength of natural stones, as estimated by Uniaxial compressive strength tests (UCS) and respective non-destructive tests results (Schmidt Hammer Rebound...
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The effect of degree of saturation on the unconfined …
unconfined compressive strength of different sandstones and explain the observed trends in terms of index properties and petrographic characteristics. The study is aimed at improving the existing ...
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Correlation of Schmidt hardness with unconfined …
UCS=unconfined compressive strength, E=Young's modulus, N=Schmidt hardness, c=unit weight. I. Yılmaz, H. Sendı˙r / Engineering Geology 66 (2002) 211–219 213 great thickness and the ...
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Unconfined Compression Test
Therefore, the Unconfined Compressive Strength is calculated for the maximum load applied: ... Dolomite. 30-250. Table 2: Typical values of Uniaxial Compressive Strength for a various number of rocks (from Attewell & Farmer 1976). References. ASTM D7012-14e1, (2014). Standard Test Methods for Compressive Strength and Elastic Moduli of Intact ...
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Correlation between unconfined compressive strength and indirect
In Geotechnical Engineering, determining the Unconfined Compressive Strength (UCS) of rock is of prime importance as its role in design and analysis of geotechnical problems is crucial.
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Strength and Durability Assessment of Dolomite Mine …
Dolomite powder in calcined form is conventionally used to stabilize clayey soils. Dolomite overburden is waste generated from the top layers of dolomite mines. This research investigates the geotechnical (Atterberg limits, compaction, California bearing ratio and unconfined compressive strength) and durability (wet and dry cycles) comparison of clayey soil …
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PHYSICAL PARAMETERS, TENSILE AND COMPRESSIVE …
pressive and tensile strength, physical and engineering in-dex parameters of selected dolomitic rocks with emphasis on grain size. For this purpose three groups of dolomite with similar …
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Microstructure effects on microcracking and brittle failure of
The predictive capability of conventional criteria for ultimate strength which are based on empirical fitting parameters such as cohesion and internal friction angle, or …
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Estimating Unconfined Compressive Strength of Sedimentary …
Different authors have reported the use of the point load strength index (IS(50)) as an indirect method of estimating the compressive or tensile strength of rocks (Basu and Kamran, 2010 ...
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Unconfined Compressive and Splitting Tensile Strength of …
Unconfined Compressive Tests A series of unconfined compressive tests were performed in accor-dance with ASTM D2166 (2016) to measure the unconfined com-pressive strength (UCS), qu. The ...
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Determination of Rock Strength and Deformability of Intact Rocks
The range of Young modulus in relation to the uniaxial com pressive strength was ... limestone, dolomite) 14-16 ... to perform unconfined compressive strength (UCS) tests is typically difficult ...
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Physical parameters, tensile and compressive strength of dolomite …
The purpose of this paper is to investigate the strength, physical and engineering index parameters of selected dolomitic rocks with emphasis on grain size. For this purpose, three groups of dolomite from north western Iran, with the same mineral composition but different grain size, were selected; fine grain, medium grain and coarse grain.
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Unconfined compressive strength of clay soils at different …
Unconfined compressive strength ((S_{u})) is one of the soil engineering parameters used in geotechnical designs.Due to the temperature changes caused by some human activities, it is important to study the changes in (S_{u}) at different temperatures. On the other hand, due to the differences in the mineralogical composition of clay soils, it is important …
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Empirical relations between rock strength and physical properties …
In this study, 31 empirical equations are summarized that relate unconfined compressive strength and internal friction angle of sedimentary rocks (sandstone, shale, and …
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Developing some models to predict the uniaxial compressive strength …
In term of UCS, sandstone and dolomite tend to have higher mechanical strength and density compared to limestone and marl limestone. Sandstone varies widely in strength depending on its cementation and grain size. Marl limestone, due to its higher clay content, is generally softer and less durable than the other three lithologies [32].
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Predicting the unconfined compressive strength and static …
The determination and estimation of elastic behaviour are essential in engineering practise, especially in quarrying, mining, construction, and all engineering professions that perform operations ...
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D2166 Standard Test Method for Unconfined Compressive Strength …
1.1 This test method covers the determination of the unconfined compressive strength of cohesive soil in the undisturbed, remolded, or compacted condition, using strain-controlled application of the axial load. 1.2 This test method provides an approximate value of the strength of cohesive soils in terms of total stresses.
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Capability of Pocket Penetrometer to Evaluate Unconfined Compressive
Unconfined compressive strength represents an important parameter for soil investigation report test results because the values of cohesion and allowable bearing capacity can directly obtained ...
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Unconfined Compressive Strength of Aqueous …
strength and compressive strain of the specimens after a cur-ing time of 0, 7, 14, 21, and 28 days, respectively. The max-imum compressive strength was observed in the case of 1.5% ZM after a curing period of seven days.In this case, the com-pressive strength increased from 700kPa for specimens without ZM to 1561kPa. The compressive strength of the
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Unconfined Compressive Strength of Cohesive Soil1
3.2.2 shear strength (s u)—for unconfined compressive strength test specimens, the shear strength is calculated to be 1⁄ 2 of the compressive stress at failure, as defined in 3.2.1. 4. Significance and Use 4.1 The primary purpose of the unconfined compression test is to quickly obtain a measure of compressive strength for
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Estimating unconfined compressive strength and Young's …
This study presents a new set of equations to predict the unconfined compressive strength (UCS) and Young's modulus (E) for three carbonate lithologies: limestone, dolomite, and chalk. The...
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Compressive strength and elastic properties of a transversely …
pressive strength performed on a block of calcareous mudstone retrieved from an ... pentine (brown), calcite and dolomite (blues). There is little illite and no significant cementation. ... Young modulus, Poisson ratio, unconfined compressive strength and friction angle. Toward this end, axial compres-sion tests to failure were run at confining ...
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compressive strength of dolomite
unconfined compressive strength of dolomite Scourability of Rock Formations Policy amp Memos Hydraulics Unconfined Compressive Strength qu ASTM D2938 . ... pressive strength of lime stone for crusher.
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Development of empirical equations between uniaxial …
Dolomite sanding decreases the rock mass strength and quality, deteriorating both the physical and mechanical properties of the dolomite. The strength of dolomite decreases markedly in the saturated state, increasing the probability of geological disasters, such as water and sand …
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Prediction of unconfined compressive strength of carbonate rocks …
The unconfined compressive strength (UCS) of intact rocks is an important geotechnical parameter for engineering applications. Determining UCS using standard laboratory tests is a difficult ...
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Physical Parameters, Tensile and Compressive Strength of Dolomite …
Uniaxial compressive strength (UCS) versus grain size (GS) versus average Young's modulus Journal of Civil Engineering and Management, 2020, 26(8): 789–799 797 sive strength (MPa) (r = 0.71) (Figure 9) and moderately There is a strong correlation between uniaxial com- correlates with point load strength (r = 0.45) and Brazilian pressive ...
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(PDF) Correlation of uniaxial compressive strength …
Many of the available correlations for rock strength relate the unconfined compressive strength, UCS, with the P-wave velocity, V p, for example, Azimian et al (2014), Majstorovic et al. (2019 ...
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How does Compressive Strength relate to Bearing Capacity 1
The "unconfined" compressive strength is equal to 2 times the undrained shear strength. For all intents and purposes the ultimate bearing capacity is 6 times the undrained shear strength (where c in cNc is the undrained shear strength) or 3 times the unconfined compressive strength. Apply an appropriate factor of safety (say 3) to the these ...
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