— The results indicated that the inhibitory effect on the increase in concrete mass was higher in the F-0.6 group than in the F-0.3 group, showing that concrete under F-0.3 exhibited faster mass growth. As the axial compressive stress ratio increased, steel-basalt fiber reinforced concrete's relative dynamic modulus of elasticity changed less.
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— The cubic compressive strength was 48.9 MPa at the time of column testing. The mechanical properties of the longitudinal bars and stirrups were determined by testing on three bar samples of each type of reinforcements. ... The axial compressive test was carried out by a servo-hydraulic testing machine. All specimens were tested under ...
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— Sim and Park [13] observed that the strength of the basalt fiber was about 30% and 60% of the strength of the carbon and high strength glass (S-glass) fiber, respectively. The density of basalt fiber has been reported between 2.59 and 2.8 g/cm 3 ... Table 8 shows the prediction of the compressive strength ratio and the axial strain ratio.
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— This study aimed to determine the mechanical properties of the basalt fiber-reinforced recycled aggregate concrete (BFRRAC)-filled square steel tubular stub …
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Granite Basalt Gneiss Schist Quart-zite Marble Lime-stone Sand-stone Shale Av. Co Max. Co Min. Co Range No. of ... Mean tensile strength and compressive strength for selected sedimentary rock types (after Johnson and Degraff, 1988). ... the axial test and the irregular lump test have also been proposed (see
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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 ...
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— Conversely, rapid buckling was observed in the buckling specimens when the axial stress reached the ultimate axial compressive strength. The axial stress was maintained at approximately 75–90 % of the ultimate axial compressive strength. These buckling specimens exhibited optimum ductility, with some curves decreasing …
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Ahmad, J, Yu, T & Hadi, MNS 2022, Effect of Natural Fiber Reinforced Polymer Confinement on Axial Compressive Strength of Concrete. in B Benmokrane, K Mohamed, A Farghaly & H Mohamed (eds), 8th International Conference on Advanced Composite Materials in Bridges and Structures - Volume 1. Lecture Notes in Civil Engineering, vol. …
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— An axial compressive force is applied to all RC circular samples both unwrapped and wrapped with BFRP. RC samples wrapped with BFRP sheets showed an extensive strength and ductility enhancement compared to bare sample. ... BFRP is composite material that usually contains high-strength basalt, aramid or carbon fibres on …
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— The findings indicate that the optimum volume fraction of basalt fiber with cube compressive strength, axial compressive strength, splitting tensile strength as well as elastic modulus was 0.1%, 0.15%, 0.1%, and 0.2%, respectively. ... Shatarat et al. (2022) examined what impacts basalt fiber on the bond strength for RAC. The findings ...
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— CFFTs manufactured with carbon FRP tubes instead of basalt FRP tubes and CFFTs with circular cross-sections instead of square cross-sections develop a higher compressive strength and lower ultimate axial strain. The effects of specimen cross-sectional shape and FRP type on the axial compressive behavior of CFFTs vary with …
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— A R T I C L E I N F O Keywords: Axial compressive behavior Alkali-activated seawater coral aggregate concrete (AACAC) Basalt fiber-reinforced polymer (BFRP) Ultimate strength model A B S T R A C T ...
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— The brittle behavior of concrete under axial compressive loading has been a persistent issue. This study investigates the effectiveness of a hybrid Basalt-E-glass confinement (B-CSM) in improving the compressive behavior of concrete. The B-CSM confinement demonstrates a considerable improvement in ultimate strength and strain …
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— A total of 20 column specimens were prepared for axial compressive tests to investigate the compressive behavior of the concrete column (including plain concrete column and reinforced concrete column) and were wrapped with basalt textile-reinforced fine concrete (BTRC) jackets. ... and compared to glass fibers, they have better tensile …
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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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— Monotonic and repeated axial compressive behavior of damaged concrete prisms repaired by basalt FRP (BFRP) was investigated.. The initial elastic modulus, and the strength at the turning and ultimate states decreased with the increase of initial damage.. Monotonic and repeated stress–strain relationship was proposed for BFRP …
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— The real compressive strength was determined using standard cubes of 150 mm × 150 mm × 150 mm tested according to the Method of Testing Cements-Determination of Strength [32], and the average compressive strengths of C25, C30, and C40 were 26.6 MPa, 33.3 MPa, and 46.5 MPa, respectively.
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— The axial compressive behavior of Ultra-High Strength Concrete (UHPC) columns reinforced with basalt bars was investigated in this work. Only a few research projects have used basalt Reinforced Concrete Columns. Under axial stress, 12 columns of 150 × 150 mm in cross section and 1200 mm in height manufactured of M120 grade …
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— The compressive yield strength and ultimate compressive strength of SFCB with an inner steel bar diameter of 10 mm were 48.3 % and 26.9 % higher than those of SFCB with an inner steel bar diameter of 6 mm, respectively, which is shown in Fig. 2 (c). Hydrophobic SFCBs showed obvious initial stiffness and secondary stiffness under axial ...
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— The failure modes, compressive strengths, ultimate axial strains, axial stress–strain curves, and axial strain-to-hoop strain relationships of the specimens were investigated and compared. The external confinement of the BFRP jackets was proved to be effective in enhancing the strength and deformation capacities of heat-damaged …
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— Basalt FRPs (BFRPs), the basalt fibres of which are manufactured by melting basalt rocks without additives, have recently been developed as a new group of FRP composites with good mechanical properties (for example, higher tensile strength than that of E-glass fibres, higher fracture strain capacity than that of carbon fibres, and good ...
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— Basalt is a mineral of volcanic origin, the fiber is produced from volcanic rock using a single raw material and drawing fibers from molten rock at a temperature of 1400–1500 °C. The fiber has a number of excellent properties of good mechanical strength, excellent sound and thermal insulator and so on. ... to predict the axial compressive ...
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— The uniaxial compressive strength (UCS) of rock is one of the key parameters determining the mechanical behavior and failure characteristics of rocks under loading/unloading conditions (Hajiabdolmajid and Kaiser, 2003; Yagiz, 2008; Yarali and Kahraman, 2011; Tan et al., 2016; Xia et al., 2019; Meng et al., 2020; Zhang et al., …
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— The results show that the tensile strength of short BFRP tube could reach 1011 MPa, while the compressive strength has been around 40% of tensile strength with relatively larger variation. Compared with the single tensile failure mode of BFRP tubes, three types of compressive failure modes, including micro-buckling, local buckling and …
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2.1 Uniaxial Compression. Recall the typical stress strain response curve for a specimen of intact rock under uniaxial compression (see Figure 1 in Lecture Notes 5). Part OA …
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Download Citation | On Aug 1, 2016, Ruijin Guo and others published Influence of different mixing methods on the axial compressive strength of basalt fiber recycled concrete | Find, read and cite ...
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— Abstract To investigate the size and slenderness effect on the axial-compressive behavior of basalt fiber–reinforced polymer (BFRP)-confined predamaged concrete, five groups of concrete cylinders with different sizes …
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— Basalt fiber reinforced concrete (BFRC) has the advantages of strong impact toughness, ... and the results showed that the increase in confining pressure reduced the strain rate effect of the dynamic tri-axial compressive strength, while the increase in strain rate reduced the confining pressure effect of the dynamic tri-axial compressive ...
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— The fiber shape, size and type also affect the compressive strength of UHPC. Fig. 5 (b) show the compressive strength of UHPC reinforced with 3 % different fibers: the compressive strength of SB-3, TB-3, HB-3, PP-3 and S-3 were 132.1, 138.9, 124.7, 105.9 and 151.7 MPa, respectively. According to the test results, there are some summarized …
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— Overall, axial compressive strength for Pacaya basalt ranges widely from 12 to 174 MPa (Table 3), with the lower end falling into strength categories as low as chalk . Given that the porosity of the rocks scales with permeability, we chose to assess the relationship of UCS with permeability, as this measures the strong control that cracks …
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— To do this, we evaluated the mechanical properties of rocks at Pacaya Volcano (Guatemala) using a variety of laboratory experiments, including room temperature, high temperature, and cyclically-loaded …
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— Axial compressive behavior of recycled aggregate concrete-filled square steel tube stub columns strengthened by CFRP. ... The compressive strength of 150 mm cubic concrete f cu in this paper is converted to f c using the model of L'Hermite [35]: (2) f c = 0.76 + 0.2 log 10 f cu 19.6 f cu.
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Conducted by U. S. Army Engineer Waterways Experiment Station C O R P S
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— The axial compressive MOE and strength of the lumber were obtained through the experimental tests in accordance with ISO 13061-17 . For the Canadian hemlock lumber, the compressive MOE and strength in the parallel-to-grain direction were 10,767 MPa and 26.3 MPa, respectively.
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