Two Type of Impact Load Tests, Tested on Fibre Reinforced Concrete Specimens

Řeháček, Stanislav; Huňka, Petr; Kolı́sko, Jiřı́; Kratochvile, Lucie

doi:10.1016/j.proeng.2013.09.043

Cited by 8 publications

(5 citation statements)

References 2 publications

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“…Traditional FRC applications have seen a distinction between use of micro-fiber and macro-fiber FRCs. Micro-fiber FRCs have been widely used for plastic shrinkage control [ 137 , 138 ], impact resistance [ 139 , 140 , 141 , 142 ], and fire resistance [ 143 , 144 ]. Macro fiber FRCs have been applied in structural applications such as slabs on grade as industrial floors and road pavements [ 145 ], to a lesser degree in suspended slabs [ 146 , 147 ] and tunnel linings [ 148 , 149 ].…”

Section: Durability Of Existing Frc Infrastructuresmentioning

confidence: 99%

Effect of Fibers on Durability of Concrete: A Practical Review

2020

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This article reviews the literature related to the performance of fiber reinforced concrete (FRC) in the context of the durability of concrete infrastructures. The durability of a concrete infrastructure is defined by its ability to sustain reliable levels of serviceability and structural integrity in environmental exposure which may be harsh without any major need for repair intervention throughout the design service life. Conventional concrete has relatively low tensile capacity and ductility, and thus is susceptible to cracking. Cracks are considered to be pathways for gases, liquids, and deleterious solutes entering the concrete, which lead to the early onset of deterioration processes in the concrete or reinforcing steel. Chloride aqueous solution may reach the embedded steel quickly after cracked regions are exposed to de-icing salt or spray in coastal regions, which de-passivates the protective film, whereby corrosion initiation occurs decades earlier than when chlorides would have to gradually ingress uncracked concrete covering the steel in the absence of cracks. Appropriate inclusion of steel or non-metallic fibers has been proven to increase both the tensile capacity and ductility of FRC. Many researchers have investigated durability enhancement by use of FRC. This paper reviews substantial evidence that the improved tensile characteristics of FRC used to construct infrastructure, improve its durability through mainly the fiber bridging and control of cracks. The evidence is based on both reported laboratory investigations under controlled conditions and the monitored performance of actual infrastructure constructed of FRC. The paper aims to help design engineers towards considering the use of FRC in real-life concrete infrastructures appropriately and more confidently.

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Section: Durability Of Existing Frc Infrastructuresmentioning

confidence: 99%

Effect of Fibers on Durability of Concrete: A Practical Review

2020

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“…The Drucker Prager (DP) model and Cap Plasticity (CP) model are reported to be better than Cap Damage model. Rehacek et al (2013) [23] reported an increase of 200% energy absorption in specimen with 80kg/m 3 fibers when compared to the specimen with 20kg/m 3 fibers. Murali et al (2014) [7] reported that the specimens with 1.5% fibers have shown an increase in impact energy at failure by 280% with hooked end steel fibers and by 260% with crimped steel fibers when compared to plain concrete.…”

Section: Introductionmentioning

confidence: 96%

Experimental and Analytical Investigation on Steel Fiber Reinforced Concrete

Jaiskarun¹,

Unnikrishnan²

2017

IJEE

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“…The drop-weight impact test is commonly used because it can easily change the input impact energy by adjusting the drop height and concrete mass. The widely accepted and simplest low-velocity impact test method is the drop-weight test proposed by ACI [9,13,14], and many experiments have been conducted by developing independently instrumented impact-testing facilities [15][16][17][18]. Wu et al [19] and Chen [15] investigated the impact characteristics of concrete using drop-weight impact tests at a strain-rate range of 10 −1 /s to 10 2 /s.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Impact Behavior of Concrete Panel with and without Polypropylene Macrofibers

Youm¹,

Moon

2023

Buildings

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Macrofibers have often been used to increase the tensile strength, durability, crack resistance, spalling, impact resistance, and toughness of concrete. However, the impact behavior of fiber-reinforced concrete (FRC) structures is quite different from their static behavior, and the effectiveness of macrofibers in improving impact resistance should be carefully evaluated. In this study, the impact behavior of FRC with polypropylene (PP) macrofibers was studied through a series of drop-weight impact tests. First, the material characteristics of the FRC with PP fibers under static conditions were evaluated. Test specimens were constructed and drop-weight impact tests were performed. The main parameters were the presence or absence of PP fibers and the drop height, which is related to the magnitude of the impact energy. From the results, it can be found that the crack width of the FRC specimen was smaller than the normal concrete specimen for a similar residual deflection after the impact test due to the bridging effect of the macrofibers. However, the effect of PP fibers on the impact resistance was not significant, even though there was a considerable increase in tensile and flexural performance under static conditions, since the hardening effect after the sharp reduction in strength shown in the static test of FRC is not effective in the impact test.

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Two Type of Impact Load Tests, Tested on Fibre Reinforced Concrete Specimens

Cited by 8 publications

References 2 publications

Effect of Fibers on Durability of Concrete: A Practical Review

Effect of Fibers on Durability of Concrete: A Practical Review

Experimental and Analytical Investigation on Steel Fiber Reinforced Concrete

Experimental Study on Impact Behavior of Concrete Panel with and without Polypropylene Macrofibers

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