Flexural behavior of basalt fiber reinforced concrete beams with recycled concrete coarse aggregates

Alnahhal, Wael; Aljidda, Omar

doi:10.1016/j.conbuildmat.2018.02.135

Cited by 135 publications

(60 citation statements)

References 33 publications

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“…Moreover, the density of BF is similar to that of cement concrete and mortar, so BF can be evenly distributed in concrete. Previous studies [ 13 , 14 , 15 , 16 , 17 , 18 ] have also illustrated that BF could improve the toughness and other properties of concrete structures. However, there are few studies on the long-term durability of steel bars embedded in basalt fiber reactive powder concrete (BFRPC) in an adverse environment.…”

Section: Introductionmentioning

confidence: 91%

Steel Corrosion Evaluation of Basalt Fiber RPC Affected by Crack and Steel-Concrete Interface Damage Using Electrochemical Methods

Liu¹,

Lyu²,

Zhang³

et al. 2020

Sensors

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Basalt fiber (BF) is a new anti-corrosion and environmentally friendly material, which is expected to delay the corrosion process of steel bars and improve the durability of reinforced reactive powder concrete (RPC). The electrochemical method is a nondestructive testing and real-time monitoring technique used to characterize the corrosion behaviors of steel bars embedded in concrete structures. In this paper, the electrochemical technique was employed to evaluate the corrosion of steel bars embedded in basalt fiber modified reactive powder concrete (BFRPC). Besides, crack and steel-concrete interface damage (SCID) were considered as typical factors that affect steel corrosion in concrete. Thus, both reinforced fiber-free RPC and BFRPC specimens with crack and SCID were prepared for evaluating the steel corrosion behaviors by electrochemical methods. The results revealed that both crack and SCID would aggravate the steel corrosion, and the crack was the major factor that affects the corrosion process. Moreover, the excellent compactness of BFRPC and the bridging action of BF could effectively prevent the concrete cracking and steel corrosion process of concrete. Using reinforced BFRPC instead of ordinary concrete in practical projects could greatly extend the service life of steel bars.

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Section: Introductionmentioning

confidence: 91%

Steel Corrosion Evaluation of Basalt Fiber RPC Affected by Crack and Steel-Concrete Interface Damage Using Electrochemical Methods

Liu¹,

Lyu²,

Zhang³

et al. 2020

Sensors

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“…Fan et al used a split Hopkinson pressure bar device to carry out impact tests on four kinds of basalt fiber reinforced concrete volume content and found that basalt fiber reinforced concrete has favorable impact mechanical properties, BF volume content has large effects on impact compressive strength and toughness of basalt fiber reinforced concrete [26]. Alnhhal et al carried out flexural behavior tests of 16 reinforced BFRRC beams and found that the flexural capacity of recycled concrete beams doped with BF was improved [27]. Meng and Liu et al studied the bond-slip stress-strain curves between BFRP bar and BFRRC.…”

Section: State Of the Artmentioning

confidence: 99%

Experimental Study on Deformation Performance of Basalt Fiber - Reinforced Recycled Aggregate Concrete

Zhang¹,

Junna²,

Wang³

et al. 2018

JESTR

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To explore the basic deformation performance of basalt fiber-reinforced recycled aggregate concrete (BFRRC), a deformation experiment was conducted on fifteen groups of cubic standard specimens and fifteen groups of prismatic standard specimens. The destruction process and failure mode of the test blocks were observed. The elastic modulus and Poisson's ratio of the test blocks were tested, and then the stress-strain curve under compression was obtained. The influence of the replacement ratio of recycled coarse aggregate and the basalt fiber content on the stress-strain curve, elastic modulus and Poisson's ratio were analyzed, and then the functional expression of the rising section of the stressstrain curve and the theoretical calculation formula of the elastic modulus were established considering the replacement ratio of the recycled coarse aggregate and the basalt fiber content. It is shown that the compressive failure mode of BFRRC is similar to that of ordinary concrete. It was found that the calculated results of stress-strain rising section and elastic modulus of BFRRC were in good agreement with the measured ones. The elastic modulus of BFRRC decreased with the increase of the replacement ratio of recycled coarse aggregate and increased with the increase of fiber content, while the Poisson's ratio was the opposite.

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“…Moreover, the density of BF is similar to that of cement concrete and mortar, so it has a unique advantage for the even distribution of BF in concrete mortar. Previous studies [10][11][12][13][14][15] have indicated that BF could increase the bending ductility, bending resistance, shear strength, and bearing capacity of concrete beams. Garcia et al [16] and Chandran et al [17] used BF composite materials to reinforce the wooden and concrete beams, respectively.…”

Section: Introductionmentioning

confidence: 97%

Bending Resistance and Failure Type Evaluation of Basalt Fiber RPC Beam Affected by Notch and Interfacial Damage Using Acoustic Emission

et al. 2020

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Generally, reactive powder concrete (RPC) contains steel fibers often exposed to aggressive environments. Steel fibers in such RPCs are subjected to corrosion in-service, which can significantly change the mechanical properties of the structural components. In this paper, basalt fibers were used to replace steel fibers for preparing a new basalt fiber modified reactive powder concrete (BFRPC). The bending resistance of BFRPC beams was studied, and the crack propagation and failure type of BFRPC beam were monitored by acoustic emission (AE). During the bending test, the failure type of BFRPC was evaluated by AE. Besides, the effects of notch and interfacial damage on the bending resistance and failure type were also studied. During the test, ordinary Reactive Powder Concrete (RPC) without basalt fibers was used as a reference. Results revealed that failure type of the RPC beam and BFRPC beam was mainly caused by shear failure. The notch increased the number of tensile cracks in the beam failure crack, resulting in a decrease in the bending resistance of RPC beam and BFRPC beam. Besides, basalt fiber could improve the toughness and bending resistance of BFRPC beam and increase resistance of the BFRPC beam to notch and interface damage.

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Flexural behavior of basalt fiber reinforced concrete beams with recycled concrete coarse aggregates

Cited by 135 publications

References 33 publications

Steel Corrosion Evaluation of Basalt Fiber RPC Affected by Crack and Steel-Concrete Interface Damage Using Electrochemical Methods

Steel Corrosion Evaluation of Basalt Fiber RPC Affected by Crack and Steel-Concrete Interface Damage Using Electrochemical Methods

Experimental Study on Deformation Performance of Basalt Fiber - Reinforced Recycled Aggregate Concrete

Bending Resistance and Failure Type Evaluation of Basalt Fiber RPC Beam Affected by Notch and Interfacial Damage Using Acoustic Emission

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