A Comparison Among Some Non-linear Prediction Tools on …
Basalt is among the most used rocks as aggregate, ballast, ornamental stone and for other construction purposes. Therefore, the uniaxial compressive strength (UCS) and elasticity modulus (Ei) of intact rock are required to be known for several purposes. For this reason, the purpose of the present study is to develop various non-linear prediction Model s for UCS and …
STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES
Typical values of uniaxial strength (in MPa) for nine common rock types (after Johnson and Degraff, 1988). Max. Table 2. Mean tensile strength and compressive strength for selected …
A review of test methods for uniaxial compressive strength …
The uniaxial compressive strength (UCS) of rocks is a vital geomechanical parameter widely used for rock mass classification, stability analysis, and engineering design in rock engineering.
strength and point load strength of basalt New …
property of rock. Uniaxial compressive strength is widely ... much of these relations are not derived for basalt rock (Aggistalis et al., 1996; Al-Harthi et al., 1999; Tugrul, 2004). The objective ...
Experimental Investigation on the Uniaxial Compression of …
The columnar joint is self-generated tensile fracture structure during the diagenetic process of basalt. The columnar jointed basalt is composed of basalt block and network joint (Ji et al.,2017; Cui et al.,2018).Due to the cutting of joint surfaces, the rock mass forms a polygonal prism with geometric anisotropy (Zhang et al.,2022).Under ideal conditions, the cross section …
New correlations between uniaxial compressive strength …
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 ...
Influence of water content on Geotechnical Properties of …
performed on vesicular basalt by Franzone (1980) and Kelsall et al. (1986). Kelsall et al. (1986), correlated the porosity of vesicular basalt determined using the procedure suggested by Brown (1981), with its uniaxial compressive strength and deformability. However for weathered basalt, Tugrul and Gurpinar (1997) and Gu et
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. ... Basalt (6), Deformed granite (4), Diabase (4), Diorite (1 ...
Elastic buckling of fractured basalt on the Columbia …
using a rock-mass strength criterion and a deformation modulus on simple elastic models for buckling of basalts at the Earth's surface. We find that buckling can be predicted for smaller, …
The Energy Characteristics of Columnar Jointed Basalt Size …
To analyze the mechanical behavior of CJB specimens, Que et al. (2021) implemented uniaxial compression tests on CJB specimens with quadrilateral, pentagonal, …
Mechanical behavior of rock under uniaxial tension: Insights …
Several methods have been used to determine the rock tensile properties, such as the uniaxial tension test (Perras and Diederichs, 2014; Rao et al., 2021), the Brazilian test (Li and Wong, 2013), and the three-point bending test (Biolzi et al., 2001; Lochan and Polak, 2022).Generally, rock is not subjected to pure uniaxial tensile stress in indirect tensile tests.
Prediction of Uniaxial Strength of Rocks Using Relevance …
The uniaxial compressive strength (UCS) is an essential parameter to study rock characteristics, determined by direct and indirect methods. However, the direct methods of determining rock UCS are lengthy and arduous, presenting a requirement of developing a robust indirect method. This investigation introduces an optimal computational model based on the …
Assessing the uniaxial compressive strength and tangent …
In addition to the drift conditions (speed, direction), a special feature of multi-year sea ice is described. The main part of the paper deals with mechanical properties such as flexural strength, uniaxial compressive strength and Young's modulus of columnar-grained sea ice from the southern border of the Weddell Sea.
Anisotropic mechanical behaviors of columnar jointed basalt …
Columnar jointed basalt is a typical type of jointed rock mass formed by the combined cutting effect of primary joints and aphanitic fissures and exhibits highly anisotropic mechanical behaviors in terms of strength and deformation modulus. In order to understand the anisotropic mechanical properties of columnar jointed basalt, a series of laboratory tests and …
Stress-rate dependency of uniaxial compressive strength of hard rock
The uniaxial compressive strength test of hard rock is one of the most worldwide applied tests for characterization of hard rock in rock engineering and engineering geology. The uniaxial compressive strength as the results of this test is a basic parameter, used, for example, for the design of rock engineering structures. In the commonly applied standards, stress …
Basalt | Properties, Formation, Composition, Uses
Basalt has a number of unique properties that make it useful for various applications. For example, it is known for its durability, strength, and resistance to wear and erosion, making it ideal for construction materials such as road aggregates, concrete, and building stones.Basalt is also used for manufacturing fiber reinforcement materials, known as basalt …
DETERMINATION OF THE UNIAXIAL COMPRESSIVE …
Keywords: Point load index; Rock testing; Uniaxial compressive strength. 1 INTRODUCTION ... Těšín Sandstone River – Guty 145 4.06 3.6 Pribylovská opuka Skuteč II 109 4.21 3.58
Uniaxial Strength
The uniaxial strength, also known as the unconfined compressive strength, of a rock may be regarded as the highest stress that a rock specimen can carry when a unidirectional stress is applied, normally in an axial direction to the ends of a cylindrical specimen.It represents the maximum load supported by a specimen during the test divided by the cross-sectional area of …
The effects of weathering on the strength and chemistry of …
We examine weathering-induced weakness in Columbia River Basalt (CRB). Basalts on Mars are similar in terms of compressive strength to the most weathered CRB …
Assessing the uniaxial compressive strength and …
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).
Prediction of Uniaxial Compressive Strength of Rock Via …
The uniaxial compressive strength (UCS) is an important index for rock classification and rock mass quality evaluation. As one of the indispensable mechanical parameters in rock mass engineering design and stability analysis, UCS had been included in various standards and engineering codes, and its research significance could not be ignored …
Reshuffling the Columbia River Basalt chronology—Picture Gorge Basalt
The Columbia River Basalt Group (CRBG) is the world's youngest continental flood basalt province, presumably sourced from the deep-seated plume that currently resides underneath Yellowstone National Park in the northwestern United States. ... (48.5–53 wt%) as Steens and Imnaha Basalts (with <51% SiO 2 for Rock Creek and >51% for American ...
(PDF) The Columbia River basalts
Map of the Columbia River flood basalt province (shaded), including the lower Steens basalt, interpreted as the oldest flood basalt unit, modified from Camp and Ross (2004).
(PDF) The Columbia River basalts
Panels A, B, and C illustrate three discreet groups of Imnaha basalt, and both A and B show how these may be formed by variable degrees …
Strength and abrasive properties of andesite: relationships …
Aggregates are necessary materials for the construction industry. Owing to their favourable properties, andesites are frequently used rock materials; hence, the investigation of their mechanical and aggregate properties has great significance. This paper introduces the analyses of 13 Hungarian andesite lithotypes. The samples were collected from six andesite …
Petrophysical and geochemical properties of …
[6] The Columbia River Basalt Group is a continental flood basalt province that covers over 200,000 km 2 of the Pacific Northwest in Washington, Oregon and Idaho [Hooper, 2000; Reidel et al., 2002]. The flood basalts …
Igneous Rock Associations 15. The Columbia River Basalt …
English original Version française THE COLUMBIA RIVER BASALT GROUP: A FLOOD BASALT PROVINCE IN THE PACIFIC NORTHWEST, USA Corresponding author: Steve Reidel Email: [email protected] SUMMARY ...
Limits on strength and deformation properties of jointed …
Corresponding values for a basaltic rock mass that incorporate the weakening effects of scale are deformation modulus, 10-40GPa; Poisson's ratio, 0.3; tensile strength, -0.1to -2.5MPa; …
Numerical study on size effect and anisotropy of columnar …
Under uniaxial loading, the heterogeneity of rock mass, the change of mechanical properties of joints, and the progressive fracture process of rock mass significantly affect the size effect and ...
sbm/sbm uniaxial strength rock columbia river basalt.md …
sbm uniaxial strength rock columbia river basaltExam 3 geo Flashcards Quizlet Exam 3 geo.STUDY.PLAY.What is the slowest form of mass wasting? The Columbia River Basalts are what type of volcanic feature? Flood basalt.depth of quake,amount of movement,strength of the rock,can be used to compared earthquakes globally.where is a building best at ...