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Compressive test results showed basalt fiber could increase compressive strength at elevated temperatures. The optimal basalt fiber volume fraction was 0.8%, …
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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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Studies have shown that the addition of fibers significantly increases the compressive strength of the concrete. The compressive strength of concrete with a 12 mm basalt fiber …
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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 …
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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 …
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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 correlation equation for compact basalt with a coefficient of determination ( R 2 ) = 0.84 is presented in Figure 4 and given by
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The compressive strength of basalt fibre concrete depends on quantity of fibres and dispersion f fibers. Download: Download high-res image (71KB) Download: Download full-size image; Fig. 4. Compressive strength of basalt FRC. Download: Download high-res image (104KB) Download: Download full-size image; Fig. 5. Failure …
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The increase in compressive, splitting tensile and flexural strength is in the order of 26.79, 42.71 and 44.06%, respectively, for 0.50% dosage of basalt fibre as compared to control concrete. In addition, basalt fibre is found to be amorphous and hydrophilic in nature.
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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 …
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The dynamic compressive strength factor for the granite was less than 1; for the basalt, 1.35; for the limestone, 1.52; and for the tuff, 1.7^-« The compressional wave velocity of
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In this paper, the strength prediction model of basalt fiber concrete is constructed by random forest method based on experiments to study the strengthening …
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The 15 wt% basalt fibers added to geopolymer composites aged 7 days has shown the highest compressive strength at 47 MPa with the Ca/Si ratio=1.3 (Fig. 10), whereas the 10 wt% basalt fibers added to geopolymer composites at 28 days aged has shown the highest compressive strength of 48 MPa with the Ca/Si ratio=0.97 (Fig.11). It …
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In this study, we used three tree-based ML models (Decision tree, Gradient Boosting tree, and Light Gradient Boosting Machine) to predict the mechanical strength …
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The addition of basalt fiber (BF) has a negative effect on concrete workability i.e., the slump decreases. 2. Basalt fibers have a minor effect on concrete compressive strength, where some studies reported an enhancement in compressive strength at a dose of 0.3% at most of the lengths while others reported a decrease in it. 3.
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determine the uniaxial compressive strength . and the Hoek-Brown constant as described by Hoek and Brown (1980a). In this analysis, equation (5) is re-written in the form: (6) where . and . For n. specimens the uniaxial compressive strength, the constant and the coefficient of determination are calculated from: (7) (8) (9)
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Basalt fiber reinforced concrete (BFRC) has attracted great attention in the areas of both scientific research and engineering application, ... Fig. 10 illustrates the compressive strength of OC is generally improved after a period of soaking no matter in 1% or 10% solution, until a peak strength is reached after the erosion age of 120 d ...
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Macro basalt fibers (MBF), which is also named as basalt fiber reinforced polymer (BFRP) minibar, is a novel kind of fiber manufactured with BFRP. ... compressive and tensile behavior. According to test results, UHPC with MBFs showed a more ideal fiber distribution compared to UHPC with steel fibers and PP fibers. For the samples with …
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Compressive test results showed basalt fiber could increase compressive strength at elevated temperatures. The optimal basalt fiber volume fraction was 0.8%, whereby compressive strength was higher than that of control PVA-ECC by 62.05%, 55.45% and 37.24% at 400 °C, 600 °C, and 800 °C.
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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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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 …
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Basalt fiber is a new type of green inorganic fiber with good chemical stability, high compressive strength, corrosion resistance, and high modulus of elasticity. …
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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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The flexural behavior of basalt fiber (BF)/polypropylene fiber (PF)-reinforced concrete (BPRC) was investigated. When the content of BF and PF is 0.1%, the addition of fibers increases the compressive strength of concrete. A BF content of 0.1% has the most obvious effect on improving the compressive strength, but a hybrid fiber content of …
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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 ...
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Effect of Quartz Sand on Compressive Strength of High Performance Basalt Fiber Concrete. ... Effects of the QS with different sizes and mixing ratios on compressive strength of the HPBFC were compared and the development of compressive strength of the HPBFC during different curing time was analysed. Results show that the QS with …
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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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The splitting tensile strength has a linear relationship with the compressive strength. Abstract. In this study, basalt fibre and nano-silica were used to reinforce recycled concrete, to enhance the elevated temperature performance of the recycled concrete and expand its application space. The mechanical properties and microstructures at 25 ...
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Trans. Nonferrous Met. Soc. China 32(2022) 3388âˆ'3403 Effects of microwave radiation on dynamic compressive properties of basalt Tu-bing YIN, Fei-yan JIN, Qiang LI, Xi-bing LI School of Resources and Safety Engineering, Central South University, Changsha 410083, China Received 15 July 2021; accepted 29 December …
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In this study, the compressive strength of BFRC is predicted using four tuned machine learning models, namely, Support Vector Machine (SVR), Random …
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Table 6 shows the test results of 28d compressive strength of basalt fiber permeable concrete. The results show that with the addition of basalt fiber, the compressive strength increases in different degrees.There is a positive correlation between fiber length and compressive strength, mainly because with the increase of …
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