Experimental investigation on the composite effect of steel rebars and macro fibers on the impact behavior of high performance self-compacting concrete

Ding, Yining; Liu, Dong; Zhang, Y.; Azevedo, Cecília

doi:10.1016/j.conbuildmat.2017.01.073

Cited by 80 publications

(51 citation statements)

References 38 publications

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“…After one to three more blows, this crack became wider and reached the cylinder edges, extended down to the bottom surface and splitting the specimens into two parts. This is the most common noticed brittle failure of plain cylinders, which agrees with most of the available literature [1,14,17,31,32,33,34]. However, it was also noticed that a minor crack may form before the failure of the specimen as shown in Figure 15(b).…”

Section: Results Of the Rbdwi Testsupporting

confidence: 86%

“…The third note is that increasing fiber content would normally result in higher impact capacity (higher number of blows), yet it is not necessary that mixtures with higher volume fractions would have higher ductility ratios. This result was noticed in this research and several previous researches [14,32,34,62]. It is worth to mention that much higher ductility ratios reaching 5.0 were recorded for special types of concrete like engineered cementitious composites (ECC) [63] and layered fibrous concrete with very high fiber contents [2,6,21,22,23].…”

Section: Failure Patters and Impact Ductilitysupporting

confidence: 84%

“…Second, most of the reviewed literature [1,10,11,12,13,14,16,17,33,34] showed that for concrete reinforced with steel fibers (mostly crimped and hooked-end), the ductility ratio ranges between 1.1 and 1.4, which agrees well with the obtained results in this study. However, few researches [18,32] showed that steel fiber-reinforced concrete and steel-fiber reinforced high performance concrete can reach ductility ratios up to slightly lower than 2.0. The third note is that increasing fiber content would normally result in higher impact capacity (higher number of blows), yet it is not necessary that mixtures with higher volume fractions would have higher ductility ratios.…”

Section: Failure Patters and Impact Ductilitymentioning

confidence: 99%

“…Mastali et al [30,31] conducted impact tests on SCC incorporating CFRP and glass fibers. Ding et al [32] evaluated the use polypropylene fibers on the impact resistance of SCC, while AbdelAleem et al [33] used two types of synthetic fibers, rigid and flexible. On the other hand, steel fibers were also used by some previous researchers aiming to investigate their effect on the impact resistance of SCC.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, steel fibers were also used by some previous researchers aiming to investigate their effect on the impact resistance of SCC. AbdelAleem et al [33] and Ismail and Hassan [34] used hooked end steel fibers with lengths of 35 and 60 mm, while Ding et al [32] used 35 mm hooked end fibers. Most recently, the influence of the use of hybrid combination of crimped and hooked-end steel fibers on the impact resistance of SCC was investigated by Mahakavi and Chithra [35].…”

Section: Introductionmentioning

confidence: 99%

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Repeated drop-weight impact tests on self-compacting concrete reinforced with micro-steel fiber

Abid

Abdul-Hussein

Ayoob

et al. 2020

Heliyon

105

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A B S T R A C TSteel fiber has become a proven material that can significantly alter the behavior of different types of concrete mixtures from brittle to more ductile ones. Rich literature is currently available on the mechanical properties of steel fiber-reinforced self-compacting concrete. However, the investigation of the impact resistance of this material to drop weight is still required to enrich the knowledge about its behavior under different loading conditions. An experimental work was conducted in this research to evaluate the performance of steel fiber-reinforced self-compacting concrete under repeated impact loading using the repeated blows test recommended by ACI 544-2R. The tests investigated the effect of drop weight and drop height in addition to fiber content. Straight microsteel fibers were incorporated in three volumetric contents of 0.5, 0.75 and 1.0% and were compared with a similar plain mixture. The test equipment was adjusted to conduct repeated impact loading from different dropheights and using different drop-weights. The adopted drop-heights were 450, 575 and 700 mm, while the adopted drop-weights were 4.5, 6.0 and 7.5 kg. The combination of the adopted drop-heights and weights composes four loading cases in addition to the standard loading case with a drop-weight and drop-height of 4.5 kg and 450 mm. The inclusion of micro steel fiber was found to significantly increase the impact resistance of selfcompacting concrete with percentage developments ranging from 150 to 860% compared to plain samples. The specimens tested under 4.5 kg and 450 mm drop weight and height exhibited the highest percentage improvement in impact resistance among the five loading cases. The results also showed that the impact ductility of fibrous specimens was up to 24% higher than that of plain specimens.

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Section: Results Of the Rbdwi Testsupporting

confidence: 86%

Section: Failure Patters and Impact Ductilitysupporting

confidence: 84%

Section: Failure Patters and Impact Ductilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Repeated drop-weight impact tests on self-compacting concrete reinforced with micro-steel fiber

Abid

Abdul-Hussein

Ayoob

et al. 2020

Heliyon

105

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Durability of glass fiber reinforced thermoplastic polypropylene composite bars under the coupling effect of seawater and sea sand concrete environment and sustained bending

Dong,

Qi,

Tian

et al. 2023

Polymer Composites

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The long‐term interfacial shear strength (IFSS) and flexural strength of GFPP bars under the coupling effect of bending and immersion in the simulated seawater and sea sand concrete (SWSC) solution were studied by an acceleration experiment. Three temperatures and three bending stress levels (0%, 9.8%, and 29.4% of the maximum flexural strain of GFPP bars) were used to accelerate the experiment. Results indicate that the degradation of mechanical properties of GFPP bars is relatively sensitive to the immersion temperature. Low bending stress did not accelerate the degradation of GFPP bars compared with unbent GFPP bars while high bending stress dramatically accelerated the degradation. Microscopic tests found there is corrosion of glass fibers and debonding between glass fibers and polypropylene but no obvious chain breaks of polypropylene occurred. Based on the Arrhenius theory, long‐term stable retention rates of the IFSS of GFPP bars with zero and low bending stress immersed in the simulated SWSC solution are 42.4% and 52.3%.Highlights Low‐stressed GFPP bars degraded similarly or even slower than unbent GFPP bars. GFPP bars degraded mainly due to interfacial debonding and fiber corrosion. Long‐term IFSS of GFPP bars under a coupling effect was predicted.

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Effect of macro polypropylene fiber and basalt fiber on impact resistance of basalt fiber‐reinforced polymer‐reinforced concrete

Wang

Ding

Zhang

et al. 2020

Structural Concrete

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In this paper, the effect of macro nonmetallic fibers (i.e., polypropylene fibers and basalt fibers) on the impact response of basalt fiber‐reinforced polymer‐reinforced concrete (FRP‐RC) discs is experimentally investigated using a self‐developed drop‐weight impact test device. The plain concrete and conventional steel‐reinforced concrete samples are explored as references. The impact resistance and failure behaviors are analyzed. Statistical analyses for first‐crack strength and failure strength are performed. The composite effect of basalt FRP bars and macro nonmetallic fibers on the impact energy at failure is also compared. The results indicate that the behaviors under impact load, that is, failure strength, crack number, the indent diameter, and penetration depth of the shriveled area, are greatly improved by adding of macro nonmetallic fibers, in particular macro polypropylene fibers. Additionally, the incorporation of these fibers into the basalt FRP‐RC transforms the brittle failure mode into a well ductile failure mode. Two‐parameter Weibull models are fitted by graphical methods and used to characterize the first crack strength and failure strength distributions. Reliability functions for first crack strength and for failure strength are estimated and failure strength can be predicted from first‐crack strength by using a linear regress model. The hybrid use of basalt FRP bars and macro nonmetallic fibers demonstrates a positive synergetic effect on the impact energy at failure.

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Experimental investigation on the composite effect of steel rebars and macro fibers on the impact behavior of high performance self-compacting concrete

Cited by 80 publications

References 38 publications

Repeated drop-weight impact tests on self-compacting concrete reinforced with micro-steel fiber

Repeated drop-weight impact tests on self-compacting concrete reinforced with micro-steel fiber

Durability of glass fiber reinforced thermoplastic polypropylene composite bars under the coupling effect of seawater and sea sand concrete environment and sustained bending

Effect of macro polypropylene fiber and basalt fiber on impact resistance of basalt fiber‐reinforced polymer‐reinforced concrete

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