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The uniaxial compressive strength (UCS) of rock is an important geotechnical parameter for engineering applications.However, how to determine the UCS simply and accurately has drawn the attentions of may researchers. To date, different kinds of indirect methods have been invented to determine the UCS of rocks, and among these methods, …
Volcanic rocks from the Bodrum Peninsula have been studied to establish a relationship between the uniaxial compressive strength (UCS), Young's modulus (E) and Schmidt hammer rebound number (N).
The strength weakening only due to thermal damage does not appear in the samples deformed below 600. Ductile mechanisms inhibit the brittleness of the rock; (ii) a sharp fall of the compressive strength between 750 and 900 (430 MPa at 750, lO0 MPa at 900); (iii) a very low compressive strength (50 MPa) of the partially melted rock at 1000.
Correlating uniaxial compressive strength with schmidt hardness, point load index, Young's modulus, and mineralogy of gabbros and basalts (northern Greece)
Basalt physical properties such as compressive strength and density are directly linked to their chemistry and constitution; as weathering progresses, basalts gradually become weaker and transition from intact rock to saprolite and ultimately, to soil. Here we quantify the degree of weathering experienced by the Adirondack-class basalts at the Mars Exploration …
The residual compressive strength is nearly annealing temperature insensitive above 600, and is found to be about 50% lower than that of unheated samples (350 MPa).
The ultimate compressive strength and corresponding failure strain are quantified. The test results show that Kalgoorlie basalt rock exhibits high sensitivity to strain rate effect on …
The strength properties of basalt fiber-reinforced biocemented (BFRB) sand specimens with various calcite contents and fiber contents are investigated through a series of unconfined compressive ...
Measuring the uniaxial compressive strength (UCS) and the tangent Young's modulus (E t) in the laboratory requires premium quality specimens with special core dimensions. This research focuses...
Strong-very strong correlations between uniaxial compressive strength and the rest of the engineering parameters of aphanitic and amygdaloidalbasalts with a TC of 0.50 and 0.45 are in agreement ...
Abstract To predict uniaxial compressive strength using the indirect techniques of the Schmidt hammer rebound number (N) and Point Load Index (PLI), it is required to have valid empirical equations based on rock types. This study is an attempt to address this issue by developing a model that is valid for various rock types. Three models, i.e. linear, power and …
This investigation explores the influence of physical properties on capillarity and uniaxial compressive strength from 56 specimens of basalts from Madeira Island, Portugal. Three well …
Rocks are rated on the on the Moh's Hardness Scale which rates the rocks on the scale from 1 to 10. Rocks with hardness 1-3 are soft rocks from 3-6 are medium hardness rocks and 6-10 are hard rocks. The hardness of Basalt is 6 whereas …
Understanding the physical and geotechnical properties of basalt rocks is essential for ensuring the stability and safety of structures built on or within these formations. It is crucial to...
Typical values of strength parameters for intact basalt at ambient temperature (20°C) and negligible confining pressure are Young's modulus, 78±19 GPa; Poisson's ratio, 0.25±0.05; …
3.3 Mechanical Behaviour. Uniaxial compressive strength.It was observed from Fig. 7 that vesicular basalts were failed much lower strengths than the rest of variants of basalt possibly because of a vesicular structure. Most of the samples failed along the periphery of vesicles, and propagation of failure is along the chain of vesicles (Fig. 8).In the case of …
ABSTRACT. ABSTRACT: Understanding and predicting the intact strength of rock is very important in design of foundations, tunnels, and in other engineering projects. The presence of vesicles within basalt has a direct impact on the unconfined compressive strength (UCS) of the intact rock. Over 130 basalt samples from foundation projects for a large liquid …
Empirical relationships for estimating Uniaxial Compressive Strength (UCS) of rock from other rock properties are numerous in literature. This is because the laboratory procedure for determination of UCS from …
Uniaxial compressive strength (UCS) is an important mechanical parameter for rock classification, rock mass engineering design and rock mass stability analysis, and it can also be used to assess rock material strength in Rock Mass Rating (RMR). 1 Conventionally, the UCS of rocks can be determined by the uniaxial compressive tests, as suggested by the International …
An attempt has been made to correlate the uniaxial compressive strength and Young's modulus of gabbros and basalts with Schmidt hammer rebound number, the point load strength index, Is(50) and the degree of weathering. Sixty three samples of gabbro and thirty of basalt from the ophiolitic complex of Pindos zone (Northern Greece) have been collected by core drilling and tested …
The cumulative acoustic emission quantity and energy released when the columnar jointed basalts (CJBs) reach their strength under compression are important theoretical …
