Experimental study on the effect of basalt fiber reinforced …
When two layers of BF-R-EMS with a diameter of 8–9 mm are added to the concrete and 12 mm basalt fibers with a content of 2% are added to the matrix, the maximum compressive strength was increased by 7.9% compared to the unadulterated basalt fibers, and the maximum compressive strength was increased by 443% …
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Mechanical Characterization of Compact Basalt by …
It may be seen from Table 2 that the dynamic compressive strength of compact basalt is 4.14 to 7.52 times that of the static compressive strength for strain rates varying from 41.31/s to 475.59/s. The …
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Mechanical performances and micro-level properties of basalt …
Xu et al. [22] initially used basalt fiber to develop ECC and investigated the mechanical performance of Basalt-ECC at ambient temperature, 0.85% tensile strain capacity and 23.3 MPa compressive strength were obtained as volume fraction of basalt fiber increased up to 3%. These results indicate that fully replacing PVA fiber induces …
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Estimation of compressive strength of various stones based …
This work examines the compressive strength of natural stones, as estimated by Uniaxial compressive strength tests (UCS) and respective non-destructive tests results (Schmidt Hammer Rebound test, SHR, or an Ultrasonic Pulse Velocity transmission, UPV). In practice, aiming to correlate the values of the UCS test with the results of the NDT …
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Modeling strength characteristics of basalt fiber reinforced …
This study investigated the importance of applying explainable artificial intelligence (XAI) on different machine learning (ML) models developed to predict the strength characteristics of basalt ...
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Experimental study on mechanical properties of basalt fiber …
Fiber reinforcement technology can significantly improve the mechanical properties of soil and has been increasingly applied in geotechnical engineering. Basalt fiber is a new kind of environment-friendly and high-performance soil reinforcement material, and the mechanical properties of basalt fiber-reinforced soil have become a …
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Dynamic compressive properties of Kalgoorlie basalt rock
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 …
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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. Various UCS testing methods and apparatuses have been proposed over the past few decades. The objective of the present study is to summarize …
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The porosity and engineering properties of vesicular basalt …
The presence of non-connected vesicles in extensive basalt flows in western Saudi Arabia greatly affects their engineering properties such as compressive strength, modulus of elasticity, Poisson's ratio and sonic velocities. In order to evaluate some of these properties, the density and/or the porosity of the material must be known.
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Dynamic Split Tensile Strength of Basalt, Granite, Marble …
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 …
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Mechanical properties and microstructure of basalt fibre and …
The relative residual splitting tensile strength increases as the basalt fibre content increases. Nano-silica is generally beneficial to the improvement of the compressive strength at different temperatures. ... The compressive strength decreases significantly in the range of 400–600 °C, and the decrease range is mostly between 40% …
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(PDF) Assessing the uniaxial compressive strength and
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 ...
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Limits on strength and deformation properties of jointed …
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, …
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Assessment of the optimal level of basalt pozzolana blended …
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 …
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Uniaxial compressive strength ( c) and deformation …
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 Siltstone 89 31 350 14 - - - - …
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Experimental Study of the Dynamic Compressive and Tensile Strengths …
The dynamic compressive and tensile strengths of basalt fiber reinforced alkali-activated concrete (BFRAAC) material are experimentally investigated in the present study. Tests adopting split Hopkinson pressure bar (SHPB) system, INSTRON high strain rate system and modified SHPB system were carried out to determine the compressive …
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Unconfined Compressive Strength Characteristics of …
The results illustrate that no-fiber columns sustain more than 50 % of the failure load before cracking, while this percentage raised to 75 % upon adding basalt fiber to concrete. 0.3 % of basalt ...
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Properties of Basalt | Physical | Thermal
The hardness of Basalt is 6 whereas its compressive strength is 37.40 N/mm 2. Streak is the color of rock when it is crushed or powdered. The streak of Basalt is white to grey whereas its fracture is conchoidal. Luster of Basalt is the interaction of light with the surface of Basalt. Luster of Basalt is not available. Basalt cleavage is not ...
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Enhancing Concrete Mechanical Properties through Basalt …
To study the effects of basalt fibers (BFs), calcium sulfate whiskers (CSWs), and modified calcium sulfate whiskers (MCSWs) on the compressive strength and dynamic modulus of elasticity of concrete, this paper utilizes Mercury Intrusion Porosimetry (MIP) to measure the microstructure of concrete and calculate the fractal dimension of …
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Compressive strength of basalt fiber reinforced concrete …
This paper looked into the compression strength of basalt fiber reinforced concrete when it bears expanded clay as aggregate and when it bears the usual gravel as aggregate. ... Bogas J A Gomes M G and Gomes A 2013 Compressive strength evaluation of structural lightweight concrete by non-destructive ultrasonic pulse velocity …
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Engineering, Mechanical and Dynamic Properties of Basalt …
It also exhibits the highest increment of compressive strength of 4.48% and a dynamic MOE of 13.83%. New insights reveal that although the residual flexural …
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Basalt fibre-reinforced concrete: review of fresh and …
The compressive strength increased, as the dosages of basalt fibres rises, reaching its maximum value of 0.1% and then it gets reduced may be due to increase the dosages of basalt fibre in mixture which produces voids that results in reduce the interfacial zone between basalt fibre and other constituent of concrete.
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Alkali-activated basalt powder/slag systems: compressive strength …
This study investigates the potential use of basalt powder as a sole precursor or blended in high amounts in slag-based alkali-activated systems. Eight alkali-activated mixes are prepared and comprehensively analyzed to determine the compressive strength development and microstructural characterization of basalt …
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strength and point load strength of basalt New …
Keywords: Basalt, Regression analysis, Point load strength index, Uniaxial compressive strength Introduction Uniaxial compressive strength (UCS) is an important property of rock. Uniaxial ...
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Rock mass properties
ξ uniaxial compressive strength of the intact rock pieces, ξ value of the Hoek-Brown constant for these intact rock pieces, and ξ value of the Geological Strength Index GSI for the rock mass. ... Fresh basalt, chert, diabase, gneiss, granite, quartzite R5 ; Very: strong: 100 -250 4 -10 Specimen requires many blows of a geological :
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Influence of the composition of high-strength concrete and …
The compressive strengths of the aggregates were tested using drill cores with a height of h = 180 mm and a diameter of d = 60 mm.The test velocity was 0.5 MPa/s. The modulus of elasticity was determined according to DIN EN 12390-13 [] using drill cores with h = 300 mm and d = 150 mm.The basalt has a mean compressive strength of f …
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Studies on strength properties of basalt fibre reinforced …
The 7 days compressive strength is having almost 55% to 64% of 28 days compressive strength for this basalt fibre reinforced concrete. This observation is similarly seen in split tensile strength test also. (ii) The compressive strength is found to be maximum of 36.67 N/mm 2 for the concrete having 1% of basalt fibre content. The …
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Fresh, mechanical, and durability properties of basalt fiber …
The compressive strength increased by about 10% at a fibers dose of 2% compared to the control mix. However, the further increase in BF dosage to 2.5% and 3% showed a negative impact on the compressive strength, where the compressive strength dropped by about 12% and 21%, respectively. ... Effect of basalt fibers length …
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Dynamic compressive properties of Kalgoorlie basalt rock
The ultimate compressive strength and corresponding failure strain are quantified. The test results show that Kalgoorlie basalt rock exhibits high sensitivity to …
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