2020年11月1日 The ultimate compressive strength and corresponding failure strain are quantified. The test results show that Kalgoorlie basalt rock exhibits high sensitivity to on its compressive strength especially above 100/s and dynamic increment factor up to 2.3 at
خبير الاتصالTypical 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,
خبير الاتصال2023年11月1日 The results show that: (1) the ability of basalt to resist load and deformation changes from slight enhancement to rapid deterioration with the increase of
خبير الاتصال2013年8月1日 The aim of this paper is to estimate the uniaxial compressive strength (UCS) of rocks with different characteristics by using genetic expression programming (GEP).
خبير الاتصال2021年4月13日 Compiled data show that, although porosity exerts a first-order influence on the uniaxial compressive strength of volcanic rocks, parameters such as the partitioning
خبير الاتصال2021年4月1日 The uniaxial compressive strength (UCS) is a mechanical property of intact rocks that is important in civil and mining engineering works (Aladejare 2020; Aladejare
خبير الاتصالPDF Basalt was used as an ornamental stone in many historic and ancient cities in Jordan. Measuring the uniaxial compressive strength (UCS) and the... Find, read and cite all the research...
خبير الاتصال2020年11月1日 Abstract. In this study, the basalt rock extracted from the Kalgoorlie region of Western Australia is intensively studied on its compressive properties under both static
خبير الاتصالmain factor inducing the decrease of compressive strength and fracture toughness of basalt which decrease fastest at 100 C. The elastic modulus decreases fastest at 200 C, which
خبير الاتصال2021年4月13日 A peak stress (the uniaxial compressive strength of the rock, ... The strength of basalt from the French Massif Central increased up to 700 °C and then decreased at temperatures of 800, 900, and 1000 °C (Duclos and Paquet 1991; Fig. 10d). To explain the strengthening at high-temperature, some of these studies hypothesised
خبير الاتصال2021年12月9日 The compressive strength was calculated by formula as follows: Compressive strength (MPa) = Failure load/cross sectional area. Table 7 represents all the results of compressive strength and are as a function of percentage basalt content and curing time according to tested days of cube specimens and are graphically plotted in Fig. 3.
خبير الاتصال2021年9月18日 The rapid development of modern society has increased the demand for high-performance geo-materials. As an advanced cementitious composite, fiber-reinforced concrete has attracted much attention and has been widely applied to various buildings and civil infrastructure. A basalt fiber-reinforced concrete is proposed as an advanced geo
خبير الاتصال2011年3月18日 of intact rock samples Tests of rocks world-wide ... Uniaxial compressive strength ( ... Basalt 145 50 347 25 207 82 395 3 (17) Diabase, dolerite 229 88 384 13 152 81 537 5 15.2 Hyperite - - - - 245 108 441 2 ure Graywacke 81 25 310 12 - - - - Sandstone 109 28 257 95 147 28 189 5 18.8 ...
خبير الاتصال2023年12月22日 The rock hardness of basalt is 6 as per the Mohs scale and can be observed through a combination of its compressive strength. Generally, 100-300 Mpa or Megapascal is the compressive strength. Its tensile strength is10-30 Mpa, and its shear strength is 20-60 Mpa, which denotes that depending on the mineral makeup, basalt
خبير الاتصال2022年10月3日 1. Introduction. Basalt is an abundant rock. Reportedly about 33 % of the Earth’s crust is made of basalt [1].Basalt rock beds with a thickness of up to 200 m have been discovered in East Asian countries [2].The largest deposits of basalt can be found in Russia, with approximately 197 million m 3 of basalt reserves in the 30 active quarries [3]
خبير الاتصال2021年4月1日 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 compression tests is cumbersome, time consuming, and often considered expensive, especially for small to medium-sized mining
خبير الاتصال2020年11月4日 Basalt was used as an ornamental stone in any historic and ancient cities in Jordan. Measuring the uniaxial compressive strength (UCS) and the tangent Young’s modulus (Et) in the laboratory requires premium quality specimens with special core dimensions. This research focuses on correlations both UCS and Et with Leeb Rebound
خبير الاتصال2020年12月2日 In this paper, the effect of unconfined compressive strength (UCS) of the rock surrounding the tunnel has been studied. The trinitrotoluene (TNT) has been modelled using Jones–Wilkins–Lee model in equation of state (EOS) terms. ... a drastic reduction in acceleration has been observed for basalt rock. Fig. 9. Variation of total energy with ...
خبير الاتصال2015年6月4日 Estimating compressive strength. General rock failure criterion can be reduced to a few parameters dependent on lithology (m) and the uniaxial compressive strength (C 0).Lithology is commonly derived during log analysis, so m may be estimated (Table 1).What is needed still is an initial measure of rock strength provided by C 0. C 0
خبير الاتصال2018年4月17日 Basalt is an extrusive igneous rock derived from Lava and spread over different localities in Jordan. It can be used in industrial applications, and as construction materials. Before using basalt, it is
خبير الاتصال2019年4月9日 Rock Mechanics and Rock Engineering - Empirical formulae are commonly used to estimate pillar strength for the design of both coal pillars (Hustrulid 1976) and hard rock pillars (Martin and Maybee 2000).Rock uniaxial compressive strength (UCS) is recognized as one of the influencing factors and is required in all the empirical relations,
خبير الاتصال2023年4月30日 Basalt is used all over the world, and because of its volcanic origin, it is an abundant source of basalt rock. Its structure is medium to fine-grained and compact. Nowadays, ... Kahraman K (2001) Evaluation of simple methods for assessing the uniaxial compressive strength of rock. Int J Rock Mech Min Sci 38:981–994
خبير الاتصال2021年10月1日 The tensile strength of volcanic rock exerts control over several key volcanic processes, including fragmentation and magma chamber rupture. Despite its importance, there is a paucity of laboratory data for the tensile strength of volcanic rocks, leading to an incomplete understanding of the influence of microstructural parameters,
خبير الاتصال2021年1月1日 This basalt rock in its natural form is well known as building and paving stone from Roman age. Basalt is widely used in architectural applications like making of tiles and slabs. ... Jiang et al. reported an improvement of 8% at the age of 7 days and 4.67% at the age of 28 days in compressive strength by adding basalt fibres to concrete ...
خبير الاتصال2021年10月20日 the rock type and the nature of testing method; hence, their applicability is limited. Kimberley et al. (2013) developed a theoretical universal rate-dependent scaling relationship for the compressive strength of brittle materials incorporating micro-mechanical behaviour. The micro-crack interaction associated with the flaws and
خبير الاتصال2021年2月24日 Basalt is a type of igneous rock (volcanic magma hardens under the atmosphere), extrusive rock [21,22,23,24] and is usually originated in the East Asian countries. ... 4.1 Compressive strength. The compressive strength is commonly used for measuring the quality of concrete. It can be defined as the ability of a material to resist
خبير الاتصال2020年11月1日 In this study, the basalt rock extracted from the Kalgoorlie region of Western Australia is intensively studied on its compressive properties under both static and dynamic loads covering strain rate between 2.22 × 10-6 /s to 408/s. The ultimate compressive strength and corresponding failure strain are quantified. The test results
خبير الاتصال2022年3月3日 The concrete of the deep mine shaft lining often produces a phenomenon similar to rock-burst, and basalt fiber has good crack resistance and is widely used in engineering construction. From the perspective of concrete dynamics, this paper conducts dynamic tests on ordinary concrete and basalt fiber reinforced concrete (BFRC) by using
خبير الاتصال2018年10月3日 Basalt, an igneous, extrusive rock (volcanic magma which solidifies in open air) [5, 8,9,10,11], ... An increase in compressive strength of BFRC1 was in the order of 20.85% and 26.80% as compared to control concrete at 7 days and 28 days, respectively. Furthermore, compressive strengths of BFRC2 and BFRC3 were found to be comparable
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