Experimental Study on Basic Mechanical Properties of Basalt Fiber Reinforced Concrete

Zhou, Hao; Jia, Bin; Huang, Hui; Mou, Yanling

doi:10.3390/ma13061362

Cited by 120 publications

(47 citation statements)

References 33 publications

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“…Fibres that are most commonly used to reinforce mortars are made of steel, carbon, glass, polypropylene and basalt [ 41 , 42 , 43 , 44 ], although the use of other natural fibres, such as sisal, has also been reported [ 45 ]. As the basalt fibres used in this study are a relatively new material [ 46 , 47 , 48 , 49 , 50 ], the properties of composite materials (including cementitious mortars) with their addition have not been fully discovered yet, and intensive research is still recommended [ 42 ]. A summary of the studies carried out thus far on various types of mortars with the addition of basalt fibres was presented in [ 51 ], where the authors suggested the following.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behaviour of Cementitious Mortars with the Addition of Basalt Fibres

et al. 2021

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The results of flexural tests of basalt fibre-reinforced cementitious mortars in terms of flexural strength and the occurrence of the bridging effect are summarised. Mixture proportions and curing conditions were altered for various series. The main parameters concerning mixture proportions were water to cement ratio (w/c), micro-silica and plasticiser addition and fibre dosage (1%, 3% and 6.2% by binder’s mass). Various curing conditions were defined by different temperatures, humidity and time. The influence of the amount of water inside the pores of the hardened cementitious matrix on the flexural strength values, as far as the impact of the alkaline environment on basalt fibres’ performance is concerned, was underlined. The designation of flexural strength and the analysis of post-critical deformations were also performed on the reference series without fibres and with the addition of more common polypropylene fibres. The bridging effect was observed only for the basalt fibre-reinforced mortar specimens with a relatively low amount of cement and high w/c ratio, especially after a short time of hardening. For the lowest value of w/c ratio (equalling 0.5), the bridging effect did not occur, but flexural strength was higher than in the case of non-reinforced specimens. Comparing mortars with the addition of basalt and polypropylene fibres, the former demonstrated higher values of flexural strength (assuming the same percentage dosage by the mass of the binder). Nevertheless, the bridging effect in that case was obtained only for polypropylene fibres.

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Section: Introductionmentioning

confidence: 99%

Flexural Behaviour of Cementitious Mortars with the Addition of Basalt Fibres

et al. 2021

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“…Moreover, the related researches show that BF enhances the toughness, impermeability, and preventing cracks of concrete 38 – 41 . Zhou 42 indicated that BF enhanced effect on the compressive strength, tensile strength, and flexural strength. The improvement effect was the highest with the basalt fiber content was 0.3% and 0.4%.…”

Section: Introductionmentioning

confidence: 99%

Single pullout experiment and reinforcement properties of basalt fiber in vegetation concrete

Zhang

Liu

2022

Sci Rep

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Basalt fiber (BF) reinforced vegetation concrete (VC) technique has attracted the attention of researchers. In order to investigate the reinforcement properties of BF reinforced VC, the optimal BF length and content. Through the single BF pullout test and direct shear test, the properties of interfacial strength between BF/VC and the reliability of the formula for calculating the optimal BF reinforcement length are studied. It has been found that the designed equipment is an efficient method to obtain the interfacial peak shear strength and residual shear strength of BF/VC. Moreover, the direct shear test proves the feasibility of the formula, which is used as a basis for mixing BF length in engineering. The anchoring effect between the cement hydration product and the fiber in the VC changes the mechanical action between BF/VC and significantly improves the shear strength of the interface. Higher dry density effectively enhanced the peak tension of a single BF by 149.23%. The optimal BF length and content make the softening degree of vegetation concrete not evident, which improves the durability of VC engineering. The formula of optimum fiber reinforced length and empirical formula can be used as reference for mixing basalt fiber in practical engineering.

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“…Compared with steel fiber and carbon fiber, BF has the advantages of excellent mechanical properties, outstanding thermal properties, stable chemical properties, and excellent compatibility. Therefore, the study of BFRC has certain theoretical significance and practical value, and also plays an important guiding role in improving the performance of concrete [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Quantifying Computed Tomography of Basalt Fiber-Reinforced Concrete under Unconfined Compression

et al. 2022

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The macroscopic aspects of adding basalt fiber (BF) to concrete has been the subject of studies that document great increases in compression strength. Research into the microscopic aspects of the reinforcement mechanism is still in an exploratory stage, and the quantitative analysis and visual observation of fibers in the concrete matrix are difficult. In this paper, the reinforcement effect of fiber on concrete is studied by means of computed tomography (CT) scanning technology and digital image processing (DIP) technology, combined with the macro-mechanical properties obtained from the unconfined compression strength test, and quantitative analysis from the micro point of view. At the same time, the fiber visualization is realized with the help of Avizo. The results show that with the increase in fiber dosage, the peak stress of concrete first increases and then decreases. When the fiber dosage is 3 kg/m3, the peak stress is 44.4 MPa, which is 41.85% higher than that of ordinary concrete. Additionally, the proportion of macropores is the least, which is the best fiber dosage. It is found that when the fiber dosage is 3 kg/m3, the angular distribution of φ is relatively uniform, and the uniform distribution of fibers forms a dense network structure, which significantly increases the peak stress of concrete. However, when the fiber dosage is too high, it will lead to the accumulation of fibers and produce macropores, and these excess fibers mainly appear in the horizontal direction and do not contribute to the compression strength.

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Experimental Study on Basic Mechanical Properties of Basalt Fiber Reinforced Concrete

Cited by 120 publications

References 33 publications

Flexural Behaviour of Cementitious Mortars with the Addition of Basalt Fibres

Flexural Behaviour of Cementitious Mortars with the Addition of Basalt Fibres

Single pullout experiment and reinforcement properties of basalt fiber in vegetation concrete

Quantifying Computed Tomography of Basalt Fiber-Reinforced Concrete under Unconfined Compression

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