موقعك الحالي:صفحة رئيسية>المنتجات
Corresponding values for a basaltic rock mass that incorporate the weakening effects of scale are deformation modulus, 10–40 GPa; Poisson's ratio, 0.3; tensile strength, −0.1 to −2.5 MPa; uniaxial compressive strength, 10–90 MPa; and cohesion, 0.6–6 MPa.
Read More
2006年3月19日 In general, compared to intact rock, a rock mass has reduced tensile strength (almost zero), and reduced shear strength especially along discontinuity planes. Furthermore,
Read More
2024年2月21日 Compressive strength is an important property of rocks in many engineering applications, such as the design of foundations, dams, and tunnels. The following table provides a comprehensive list of compressive strength
Read More
2020年11月1日 The test results show that Kalgoorlie basalt rock exhibits high sensitivity to strain rate effect on its compressive strength especially above 100/s and dynamic increment factor
Read More
2024年5月24日 Based upon an analysis of published data, Hoek and Brown (1980a) have suggested that the uniaxial compressive strength σ cd diameter of d mm is related to the
Read More
2020年4月19日 The uniaxial compressive strength is the value of compressive stress at which the specimen fails. The compressive strength is usually obtained by compression testing
Read More
2019年11月12日 Uniaxial compressive strength (UCS) and tangent Young’s modulus (Et) are the main input parameters of the mechanical behavior of rock, especially in ascertain-ing rock
Read More
2020年9月30日 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...
Read More
form. Results of the unconfined compressive strength tests on basalt indicated, that as the loading rate was increased from 1 to 1.60 y x 10
Read More
2024年8月14日 Uniaxial compressive strength ( c), E-modulus and the factor mi in the Hoek-Brown failure criterion for rock masses
Read More
Rock Hardness property is usually measured to determine the compressive fracture strength, to determine whether a rock is a soft rock or a hard rock. 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.
Read More
2025年1月22日 With an increase in the number of cycles, these effects accumulate, resulting in a reduction in rock strength and an increase in the number of cracks. Moreover, the failure patterns of the prefabricated fractured basalt show multiple cracks, which correspond to the multiple inflections observed in the stress-strain curves illustrated in the ...
Read More
2017年8月29日 studies, the brittle strength of a rock or rock mass may be approximated by 0-1 = 0-3 4- \/micro0- 3 4-S0- 2, (2) in which 0-1 and 0-3 are the greatest and least principal stresses at the initiation of fracture, 0-c is the unconfined compressive strength of intact basalt, and m i and s
Read More2023年11月15日 Basalt fiber is a green inorganic fiber manufactured by natural basalt rock, it features high-temperature stability and excellent mechanical properties ... When temperatures are higher than 200 °C, compressive strength of basalt/PVA HF-ECC exhibits remarkable improvement as superimposed basalt fiber content increases to 0.8% and 1.2%. The ...
Read More
2020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 show that Kalgoorlie basalt rock
Read More
2020年9月30日 Assessing the uniaxial compressive strength and tangent Y oung’s modulus of basalt rock using the Leeb rebound hardness test • 15 Materiales de Construcción 70 (340), October–December 2020 ...
Read More
2019年11月12日 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). Conducting a UCS test in the laboratory accord -
Read More
In particular, the Uniaxial Compressive Strength is re-calculated as: σ c = σ UCS / (0.88 + 0.222*(D/L) ) Where σ c is the corrected uniaxial compressive strength. Rock characterization and typical range of UCS based on rock types . Based
Read More
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 strain rate effect on its compressive strength especially above 100/s and dynamic increment factor up to 2.3 at strain rate 403/s.
Read More
2020年4月19日 The uniaxial compressive strength is the value of compressive stress at which the specimen fails. The compressive strength is usually obtained by compression testing ... Basalt 20-80 0.1-0.2 70-300 10-30 4-20 Rhyolite 10-40 0.2-0.3 60-150 5-10 -- ... Tensile strength of rock shall be calculated load at
Read More
2020年9月8日 Compressive strength for basalt 36.39N/mm2 while 37.16N/mm2 for granite. 24.81N/mm2 tensile strength for basalt while 12.57N/mm2 for granite, 31.83N/mm2 flexural strength for basalt while 27.97N/mm2 for granite. ...
Read More2021年11月8日 From volcanic rocks, basalt rock is a hard rock which originates from the cooling of volcanic magma. Basalt fibers (BF) are made from basalt rocks (Arivalagan. S, 2012, ... Compressive strength of M25 concrete reinforced with basalt fibres was lso investigated by study (Nayan Rathod, et al 2015). Two fibre dosages as 1 and 2 percent were ...
Read More
2024年8月14日 i is the parameter for intact rock in the Hoek -Brown failure criterion for rock masses by Hoek et a l. (1998). Values in parenthesis have been estimated by Hoek et al (1992); values with question mark have been assumed 2) For clays the values of the uniaxial compressive strength is based on ISRM (1978), refer to Table 2.7.
Read More
2024年8月14日 Intact rock strength . The uniaxial compressive strength of a rock material constitutes the highest strength limit of the rock mass of which it forms a part. It is determined in accordance with the standard laboratory procedures. For the purpose of rock mass classification, the use of the well -known point load strength index can be useful as the
Read More
2021年11月24日 Keywords: Foundation footing, rock mass classification, rock class, compressive strength, safe bearing capacity (SBC). Introduction Basalt rock is an igneous rock which spreads to about 500000 square kilometer of India. In western part of area the basalt rock is known as Deccan trap. The Deccan Traps are formed about
Read More
2022年9月28日 The aim of this study is to understand the strength behaviour and fragment size of rocks during indirect, quasi-static and dynamic tensile tests. Four rocks with different lithological characteristics, namely: basalt, granite, sandstone, and marble were selected for this study. Brazilian disc experiments were performed over a range of strain rates from ~ 10–5 /s to 2.7 ×
Read More
2020年12月19日 compressive strength, index-to-strength conversion factors are used. These factors have been These factors have been proposed by var ious r esearchers a nd are dependent up on rock t ype.
Read More
2014年1月1日 The shear strength properties of rock materials, cohesion and internal friction angle, are determined by carrying out tri-axial strength test on cylindrical core specimens in laboratory.
Read More
2023年10月21日 basalt rock have varied values of safe bearing capacity, these samples tell us that we cannot ... The uniaxial compressive strength of rock may be predicted from point load test with following ...
Read More
الصين -تشنغ تشو -المنطقة الوطنية للتنمية الصناعية للتكنولوجيا المتطورة، جادة العلوم رقم 169.
