The cube compressive strength and axial compressive strength of the specimens decreased with the increase of temperature. With the same replacement ratio and fiber dosage, increasing the temperature from 300 °C to 600 °C, the decrease in cube compressive strength and axial compressive strength was the most significant, which was between 36.4 ...
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This research presents novel hybrid machine learning models for predicting the compressive strength (CS) and tensile strength (TS) of basalt fibre reinforced concrete …
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Basalt fiber is a promising reinforcement agent for loess engineering. In this study, unconfined compressive tests facilitated with the digital image correlation (3D-DIC) method were carried out on basalt fiber–reinforced loess to obtain the deformation images and surface strain fields at different loading moments. The reinforcement mechanism of samples with different …
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Fiber-reinforced concrete technology has emerged as a critical innovation in the field of civil engineering. Introducing various types of fibers into concrete effectively enhances their resistance to cracking, tensile strength, and impact resistance [10], [11], [12].These fibers can be categorized into two groups based on their size: micro fibers (with a diameter less than 0.3 …
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Introduction. Basalt fibers (BF) are produced from the basalt rocks which are formed because of volcanic lava solidification. BF are abundantly found on earth due to their volcanic origin 1, 2.BF have higher viscosity and resistivity of temperature shifts from low to high which ascribes higher Compressive Strength (CS) and durability 1.Micrograph Analysis show that BF have good …
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The results indicate that concrete's toughness and crack resistance performance are significantly improved with added fiber in basalt fiber reinforced concrete, and the optimum fiber content is …
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To determine the compressive strength (CS) and tensile strength (TS) of basalt fiber reinforced concrete (BFRC), this study will develop empirical models using gene …
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It is evident that from the comparison of CFJ2B3 and CFJ2B2, the CFJ2B3 is showing only a marginal increase of 7.3 % with respect to CFJ2B2 in compressive strength by introducing an additional basalt layer. Thus, from an economical and performance perspective, CFJ2B2 wrapping was selected as the optimum for further analysis.
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It was found that the addition of basalt fibre by 1.5% and alcofine by 20% in concrete resulted in an increase in compressive strength of 8.9% for 7 days and 4.9% for 28 …
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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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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 …
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It was concluded that adding 0.5 % of 9 mm basalt fiber results in the greatest increase in unconfined compressive strength (UCS). The UCS reached 12.59 MPa, which was 71% higher than specimens without fiber, and a regression analysis was carried out to obtain the relationship among them.
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The effect of fiber volume fraction for specimens with a design compressive strength of 30 MPa, and basalt fiber length of 12 mm and 24 mm is presented in Figure 6(a). From this figure, one can observe that the 7-day compressive strength of BFRC specimens made with 12 mm and 24 mm long fibers and with all fiber volume fraction values used in ...
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The following table provides a comprehensive list of compressive strength values for different rocks at standard room temperature (approximately 20°C or 68°F). Click on the icon to switch between SI (MPa) and US customary (psi) units.
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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.
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Impact strength properties of basalt FRC are shown in Fig. ... Compressive strength percentage increment comparisons for RC sample wrapped with 1, 2 and 3 layers of BFRP sheets with bare samples are 29.8%, 52.11% and 62.416%, respectively. The test results proposed that the stiffness of BFRP-wrapped samples increased with the addition of plies ...
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The influence of fly ash content on the compressive strength was relatively small, and the 28 d compressive strength of basalt fiber self-compacting high-strength concrete slowly increased with the addition of the fly ash content. From Table 15, it can be seen that the main and secondary order of factors affecting the 28 d compressive strength ...
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Porosity is a significant physical feature of rocks due to water absorption that causes decrease in the strength. The basalt of the study area can be described as "highly porous" and ignimbrite as "extremely porous" according to the classification by Anon (1979).The average UCS of basalt is determined as 26.65 MPa.For the ignimbrite, the lowest UCS is observed in …
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compressive strength of basalt with mba - rdsa.co.in. Strength theory deals with the yield and failure of materials under the complex stress state.It is an important foundation for research on the strength of materials ...
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Increasing the content of basalt fibers to a certain extent can enhance the compressive strength of RAC, but it also significantly increases the variability of material performance. Additionally, the minimum compressive strengths of these three sets of specimens are 19.3, 19.7, and 21.0 MPa, respectively, indicating that the influence of fiber ...
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Assessing the uniaxial compressive strength and tangent Young's . modulus of basalt rock using the Leeb rebound hardness test. H. Aldeeky . a, O. Al Hattamleh. a, S. Rababah. b. a. Civil Engineering Department, College of Engineering, The Hashemite University, (Zarqa, Jordan) b.
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In this research, basalt fiber (BF) and polyacrylonitrile fiber (PANF) were used as reinforcement materials in LWACs, and the axial compressive behavior of prismatic specimens subjected to freeze-thaw cycles was studied. ... The axial compressive strength test was conducted in accordance with the requirements of the Chinese Standard (GB/T 50081 ...
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When molten magma solidifies, basalt fiber (BF) is produced as a byproduct. Due to its remaining pollutants that could affect the environment, it is regarded as a waste product. To determine the compressive strength (CS) and tensile strength (TS) of ...
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The results indicate that adding 1.0% basalt fiber significantly improves the dynamic compressive strength of RPC. At strain rate range of 100.5–118.5 s −1, the transmission energy and dissipated energy of RPC with 1.0% basalt fiber content increase by 59.2% and 26.8%, respectively, compared to RPC without fiber content.
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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...
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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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Several studies have pointed out that there was a linear relationship between the tensile strength and the compressive strength of the cement soil [32,33]. Therefore, the correlation between the splitting tensile strength and the compressive strength of the cement soil reinforced with basalt fibers was investigated in this study.
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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. From …
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Basalt fibers (BF) are produced from the basalt rocks which are formed because of volcanic lava solidification. BF are abundantly found on earth due to their volcanic origin 1,2.BF have higher ...
WhatsApp: +86 18221755073
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 …
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