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This paper considers the basalt fiber-reinforced alkali-activated concrete (BFRAAC), and explores the dynamic compressive and tensile strengths through a series of impact tests.
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This study investigates the predictive capabilities of Artificial Neural Network (ANN), Random Forest (RF), and Random Tree (RT) models for determining the compressive strength (CS) of concrete, with a specific focus on the individual and hybrid effects of Basalt Fiber (BF) and Polypropylene Fiber (PPF) on CS. The RF model …
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First, the compressive strength tests of BFRC under different stress states were performed at fiber volume fractions of 0.2%, 0.4%, 0.6% and fiber lengths of 6 mm, 12 mm and 18 mm to obtain stress ...
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The compressive strength prediction of Basalt Fiber Reinforced Concrete (BFRC) is a complex task influenced by numerous factors. For traditional empirical formula methods, difficulties such as the ...
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When compared to the average compressive strength of control specimens, the variation in average compressive strength and split tensile strength containing basalt fibers was found to be 4%, and it improved strain capacity from 4 to 12% (Ayub et al. 2014). Concrete slump values are reduced as fiber lengths and fiber volume …
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ResearchArticle Experimental Study on Unconfined Compressive Strength of Basalt Fiber Reinforced Clay Soil LeiGao,GuohuiHu,NanXu,JunyiFu,ChaoXiang,andChenYang
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This study experimentally investigated the mechanical properties of basalt-macro polypropylene hybrid fibre reinforced concrete. Three macro polypropylene fibre volume fractions (0.3%, 0.7% and 1%), two concrete compressive strengths (30 MPa and 60 MPa) and basalt fibre volume fraction 0.1%, were used to study their influences on …
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In order to investigate the influence of basalt fibers (BFs) on the mechanical performance of recycled aggregate concrete (RAC), some groups of RAC specimens were first tested involving different types of fibers such as carbon fibers, steel fibers, polypropylene fibers and hybrid fibers. The main four indices for the investigation …
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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 natural gas (LNG) storage facility on north coast of Baja, Mexico, a high-rise building in Central, Oregon and a wind turbine project in Northeastern ...
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This would imply that the optimum compressive strength could be obtained from MPC composites with an intermediate fiber length. Meanwhile, Fig. 3 compares the compressive strength of matrices containing basalt and glass fibers. At a constant fiber content, the 7-day compressive strength value of GF20 composites was …
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Composite materials are emerging as an alternative material to the machine tool structure. This work presents the study of compressive strength of composite material epoxy basalt. The epoxy content in the mixture is varied between 10 to 20% in weight. A combination with 15% epoxy resin and 85% aggregates of basalt by weight has given the compressive …
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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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GAO Lei, HU Guo-hui, CHEN Yong-hui, et al. Triaxial tests clay reinforced by basalt fiber [J]. Chinese Journal of Geotechnical Engineering, 2017, 39(S1): 198–203. (in Chinese) Google Scholar GAO Lei, HU Guo-hui, XU Nan, et al. Experimental study on unconfined compressive strength of basalt fiber reinforced clay soil [J].
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Concrete compressive strength values, mean value and strength were calculated by crushing three samples, each of which had different designs, through pressure tests run with a hydraulic system on which the load applied was set at 0.6 N/mm 2 /sec. Comparative compression values are given in Figure 5 and Figure 6.
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Test results indicated that hybrid fibers can effectively improve the compressive strength of concrete; that the maximum increases in compressive strength of C30, C40, and C50 concrete were 9.18%, 5.06%, and 7.13%, respectively; and that the effect of basalt fiber on compressive strength was greater than that of polypropylene …
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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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1. Introduction. Compressive and tensile strengths are fundamental physical properties which are required for the design of rock structures. Numerous studies have found that several variables, including mineral composition, porosity, density, specimen size, grain (particle) size, and natural discontinuities, influence the mechanical …
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The splitting tensile strength of the cement soil increases first and. then decreases with the content and length of basalt fibers. The optimal content and length of basalt. fibers for the ...
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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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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 …
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Three macro polypropylene fibre volume fractions (0.3%, 0.7% and 1%), two concrete compressive strengths (30 MPa and 60 MPa) and basalt fibre volume fraction 0.1%, were used to study their ...
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45 dry-wet cycles and found that the compressive strength of AAM was increased by 23.9% while that of ordinary Portland cement mortar was decreased from 55 to 18 MPa (Luga, 2015).
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Niu et al. [21] investigated the effect of BFs on the compressive strength of concrete (C30, C40, and C50) and found that the maximum increment in compressive strength was 9.18% (C30), 5.06% (C40 ...
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The test results show that both the unconfined compressive strength (UCS) and splitting tensile strength (STS) at a given basalt fiber content increase significantly with increasing calcite ...
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The basalt-carbon/epoxy hybrid composite C2 with angle ply layup of [02C/+45B/0B] S was found to be the optimum lay-up with highest compressive strength among all the other laminates. Discover the ...
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Numerical Study for Compressive Strength of Basalt Composite Sandwich Infill Panel. Abstract—In this study, we investigated the buckling performance of basalt fiber reinforced polymer (BFRP) sandwich infill panels. Fiber Reinforced Polymer (FRP) is a major evolution for energy dissipation when used as infill material of frame structure, a ...
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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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In this experiment, the volume of basalt fiber were 0,0.1%, 0.15%, 0.20%, in this cases of, two kinds of different ways of curing fiber influenced axial compressive strength of basalt fiber recycled concrete blocks that were cured through normal temperature and …
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In this study, the compressive and splitting tensile strength was studied after introducing chopped basalt fibers. In this research, 12 mm long and 13 μm in diameter basalt fibers were used as well as the cubes and cylinders have casted with basalt fiber reinforced concrete for 0.5 %, 1.0% and 1.5% of basalt fibers by the weight of cement ...
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Abstract. 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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The positive effect of basalt fiber reinforcement on the dynamic compressive strength of AAC was studied (Li and Xu, 2009), where the strain rate achieved in the tests were limited to 100 s −1. However, the contribution of basalt fiber to the dynamic tensile strength of AAC has not yet been studied.
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The ultrasonic detection tests show that both increased power levels and prolonged exposure time can cause severer damage to the basalt. (2) As the microwave power level and exposure time increase, the dynamic compressive strength of the treated basalt continues to decrease, while the peak strain continues to increase.
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