8 STRENGTH OF SOILS AND ROCKS. For the uniaxial or unconfined pressive strength test a right circular cylinder of the material is pressed between the platens of a testing machine as illustrated in Fig 81 The pressive strength is then defined as the maximum load applied to crush the specimen divided by the crosssectional area
Uniaxial compressive strength is considered one of the most important parameters in the characterization of rock material in rock engineering practice. The study investigated correlations between uniaxial compressive strength and point load index, P-wave velocity and Schmidt hardness rebound number together with the effects of core …
To quickly and accurately predict the uniaxial compressive strength of rock, a new SSA-XGBoost optimizer prediction model was produced to predict the uniaxial compressive strength of 290 rock samples. With four parameters, namely, porosity (n,%), Schmidt rebound number (Rn), longitudinal wave velocity (Vp, m/s), and point load …
The uniaxial compressive strength (UCS) and tensile strength (T0) are crucial parameters in field development and excavation projects. Traditional lab-based methods for directly measuring these ...
The effective porosity, saturated sonic velocity and saturated uniaxial compressive strength were determined on a large number of Borrowdale Volcanic Group volcaniclastic core samples from three ...
Empirical relationships for estimating Uniaxial Compressive Strength (UCS) of rock from other rock properties are numerous in literature. This is because the …
Dolomite 86 38 443 8 110 49 443 2 10.1 Limestone 107 47 441 81 74 71 961 25 8.4 Marble 133 63 474 20 66 71 1074 4 9.3 Greenschist - - - - 93 44 472 3 Clay schist / -stone 68 …
A point lying empirical equations to estimate the uniaxial com- on the line indicates an exact estimation, as shown pressive strength ðsc Þ; Young's modulus ðEÞ and den- in Figs. 7–9. sity ðrÞ: The estimated values of sc ; E and r were then plotted against the measured values, sc ; E and r for each test (Table 5, Figs. 7–9).
Effect of particle size (DA to DE) on degradation for dry and saturated aggregates. optimum range for degrading aggregates for com- pressive strength determination. 8. Uniaxial compressive strength vs. degradation for saturated samples The same statistical analyses were performed for saturated samples as for the dry samples …
For this purpose, three groups of dolomite from north western Iran, with the same mineral. 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
DOI: 10.1007/S00603-006-0082-Y Corpus ID: 130602467; Predicting Uniaxial Compressive Strength by Point Load Test: Significance of Cone Penetration @article{Basu2006PredictingUC, title={Predicting Uniaxial Compressive Strength by Point Load Test: Significance of Cone Penetration}, author={A. Basu and Atiye Aydin}, …
dolomite uniaxial pressive strength An investigation of the relationship between uniaxial The relationship between uniaxial compressive strength and degradation was investigated for selected rock types by using regression analyses to determine whether degradation was a useful predictor of compressive strength.
Uniaxial Compressive Strength (UCS) is one of the most important properties of rocks. Point Load Test (PLT) is practically used in geotechnical engineering to determine rock strength index ...
The rock uniaxial compressive strength (UCS) is the basic parameter for support designs in underground engineering. In particular, the rock UCS should be obtained rapidly for underground engineering with complex geological conditions, such as soft rock, fracture areas, and high stress, to adjust the excavation and support plan and ensure …
The uniaxial compressive strength (UCS) of the rock is one of the most important rock properties in geotechnical and mining engineering. UCS of rock is the one essential parameter used for the characterization of the rock mass in various systems such as rock mass rating (RMR), Q-system, and Hoek–Brown failure criterion [].UCS is typical …
Uniaxial compressive strength (UCS) was conducted on 9 rock samples of sandstone and the result values is the maximum compressive strength value was 88.44MPa and minimum value was 25 …
Basalt was used as an ornamental stone in many historic and ancient cities in Jordan. Measuring the uniaxial compressive strength (UCS) and the tangent Young's modulus (E t) in the laboratory ...
Ashutosh Kainthola & Venkatesh A. 3877 Accesses. 148 Citations. Explore all metrics. 1 Introduction. Uniaxial compressive strength (UCS) is one of the most …
This paper estimates the correlation between the physical and mechanical characteristics of dolomitic limestone. Forty samples were measured and the results were used to derive the empirical equations for the relations between the uniaxial compressive strength (UCS), elastic modulus (E), P-wave velocity ((v_{p})), Poisson's ratio (μ), point …
The uniaxial compressive strength of a rock under static loading often decreases with an increasing temperature at which the rock has been heat-treated before strength testing. This conclusion is drawn from a great number of experiments [1,2,4,8,9,11,17–19].The higher the temperature is, the lower the strength. Some results for uniaxial …
Conversely, the relationship between rebound strength and uniaxial compressive strength is described by y=1.26x-7.39, with a correlation coefficient of 0.76, slightly lower than the point load.
Therefore this research work is to assess and determine the effects of cyclic loading on the uniaxial compressive strength of weathered granite. With the use of advance GCTS Triaxial RTX-3000 machine, it is now possible to apply a fixed number of cycles to the rock specimens. The rock specimens used for the characterization purpose …
The uniaxial com- pressive strength (UCS) of an intact rock is an important geotechnical parameter for engineering applications. This parameter has a great deal of importance …
Regression analysis was used in this work to develop a general equation for predicting uniaxial compressive strength of shale from the available information on its water content and dry uniaxial ...
ABSTRACT: Uniaxial compressive strength (UCS) of intact rocks is a major consideration in rock mechanics study for civil and mining projects. UCS direct testing is expensive, time consuming and it
Uniaxial Compressive Strength . Wave Velocity . Strong Correlation . Point Load . Brazilian Tensile Strength . Point Load Strength. The purpose of this paper is to investigate the …
Prediction of elastic mechanical properties such as uniaxial compressive strength (UCS) and static Young's modulus (E s) is one of the main purposes of studies in geological, geotechnical, geophysical, petroleum, and rock engineering projects. The UCS test is applied to determine them. However, this test is destructive, expensive, time …
The effective porosity, saturated sonic velocity and saturated uniaxial compressive strength were determined on a large number of Borrowdale Volcanic Group volcaniclastic core samples from three boreholes at Sellafield, Cumbria. The work formed part of the UK Nirex Limited site investigation into whether the Sellafield area could be suitable as a …
The uniaxial compressive strength and static Young's modulus (E s) of intact rocks are the most important geotechnical parameters for stability analysis of surface and underground structures. These parameters are obtained by the uniaxial compressive test. Although this test is simple, the preparation of the samples, especially of soft rocks, is a …
dolomite and granite rocks reported decreased uniaxial compressive strength with increasing grain size. In these cases, Griffith's theory of elliptical cracks is used to in …
The uniaxial compressive strengths, density and salinity of the ice specimens were measured. The results support the curved-surface relationship between the uniaxial compressive strength and ...
The uniaxial compressive strength (UCS) of rocks is an essential input parameter for engineering design in mining and civil engineering. This research aimed to investigate the relationship between nano-mechanical properties and macroscopic mechanical properties that result from microstructural constituents of rock materials. Grid …
The point load test method was introduced for predicting uniaxial compressive strength (UCS), which has significance of cone penetration. The study examines the accurate measurement of distance (D ...
The Schmidt hammer is commonly used for the prediction of unconfined compressive strength and other mechanical properties of rocks from surface rebound hardness values since it is quick, easy, inexpensive, and non-destructive testing method. In this study, metamorphic, sedimentary, and igneous rock samples were collected from …
pressive strength had an increasing trend with increasing grain size for 0 to 5 mm; and in the following it had a de- creasing trend with increasing grain size for 5 to 50 mm,
According to the results; there are significant positive correlation between grain size and uniaxial compressive strength (r=0.89), point load strength (r=0.58), Brazilian strength...
pressive strength of freshwater ice at the same nominal cross-head rate and temperature (-10,℃). Schulson[2] ... so the uniaxial com-pressive strengths were also different. Fig.3 shows the
Introduction. Intact rock behavior is profoundly and greatly determined by the Uniaxial Compressive Strength (UCS), both in the preliminary and the final design phases of rock and geotechnical engineering, in the projects such as tunneling, rock mass excavation, dam construction, slope stability and even creating infrastructure foundations …
Uniaxial compressive strength is an important mechanical parameter for rock mass engineering. Hence, how to determine the UCS simply and accurately have drew numerous attention. In this paper, the references related to UCS estimation using indirect tests were reviewed, and three stages of the development of indirect UCS estimation were …
evaluate mechanical behavior are required. Uniaxial compressive strength (UCS) and tangent Young's modulus (E. t) are the main input parameters of the mechanical behavior of rock, especially in ascertain - ing rock shear strength, rock mass rating (RMR), classification, and earth structure design such as foundation and tunneling (1–6).