Interfacial mechanics of steel fibers in a High-Strength Fiber-Reinforced Self Compacting Concrete

Benedetty, Carlos Alberto; Krahl, Pablo Augusto; Almeida, Luiz Carlos de; Trautwein, Leandro Mouta; Siqueira, Gustavo Henrique; Silva, Flávio de Andrade

doi:10.1016/j.conbuildmat.2021.124344

Cited by 10 publications

(5 citation statements)

References 60 publications

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“…(2) The flexural strength value met the following requirements: 1 The result was accurate to 0.1 MPa. 2 If the fracture position of one specimen was not between the two concentrated loads, the results of the other two specimens were used for the strength value.…”

Section: Test Results and Analysismentioning

confidence: 96%

“…(2) The compressive strength value met the following requirements: 1 The result was accurate to 0.1 MPa. 2 The strength value of this group was the average value of three specimens.…”

Section: Test Results and Analysismentioning

confidence: 96%

“…(2) The splitting tensile strength value met the following requirements: 1 The result was accurate to 0.01 MPa; 2 The value requirements were the same as the compressive strength;…”

Section: Test Results and Analysismentioning

confidence: 99%

“…It can flow and fill the desired space under the action of its weight. However, in the early stages, it will produce a series of microcracks, which will lead to stress concentration when the concrete is subjected to external loads, thereby reducing the strength of the concrete [ 1 , 2 , 3 , 4 ]. In order to suppress the development of cracks in self-compacting concrete, researchers from various countries have studied the addition of various types of fiber to self-compacting concrete.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties and Crack Resistance of Basalt Fiber Self-Compacting High Strength Concrete: An Experimental Study

et al. 2023

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Pure self-compacting concrete has many disadvantages, such as early shrinkage and cracking. The addition of fibers can effectively improve the properties of resistance to tension and cracking of self-compacting concrete, thereby the effect of improving its strength and toughness can be achieved. Basalt fiber is a “new green industrial material” that has unique advantages, such as high crack resistance and being lightweight compared with other fiber materials. In order to study the mechanical properties and crack resistance of basalt fiber self-compacting high-strength concrete intensively, the self-compacting high-strength concrete of C50 was designed and obtained using the absolute volume method with multiple proportions. Orthogonal experimental methods were used to study the influence of the water binder ratio, fiber volume fraction, fiber length, and fly ash content on the mechanical properties of the basalt fiber self-compacting high-strength concrete. Meanwhile, the efficiency coefficient method was used to determine the best experiment plan (water binder ratio 0.3, fiber volume ratio 0.2%, fiber length 12 mm, fly ash content 30%), and the effect of fiber volume fraction and fiber length on the crack resistance of the self-compacting high-performance concrete was investigated using improved plate confinement experiments. The results show that (1) the water binder ratio had the greatest impact on the compressive strength of basalt fiber self-compacting high-strength concrete, and as the fiber volume fraction increased, the splitting tensile strength and flexural strength both increased; (2) there was an optimal value for the effect of the fiber length on the mechanical properties; (3) with the increase in fiber volume fraction, the total crack area of the fiber self-compacting high-strength concrete significantly decreased. When the fiber length increased, the maximum crack width first decreased and then slowly increased. The best crack resistance effect was achieved when the fiber volume fraction was 0.3% and the fiber length was 12 mm. Therefore, basalt fiber self-compacting high-strength concrete can be widely used in engineering fields, such as national defense construction, transportation, and building structure reinforcement and repair, due to its excellent mechanical and crack resistance properties.

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Section: Test Results and Analysismentioning

confidence: 96%

“…(2) The compressive strength value met the following requirements: 1 The result was accurate to 0.1 MPa. 2 The strength value of this group was the average value of three specimens.…”

Section: Test Results and Analysismentioning

confidence: 96%

“…(2) The splitting tensile strength value met the following requirements: 1 The result was accurate to 0.01 MPa; 2 The value requirements were the same as the compressive strength;…”

Section: Test Results and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties and Crack Resistance of Basalt Fiber Self-Compacting High Strength Concrete: An Experimental Study

et al. 2023

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“…The embedded length is uniformly distributed in the 0 to l f /2 domain, so the average embedded length is l f /4. Thus, Furthermore, no experimental investigations were reported on the influence of matrix reinforcement on group effect, which is expected to occur as fibers surrounding a fiber being pulled provide confinement and can enhance pullout performance, as shown in Benedetty et al (2021) [41].…”

Section: Fiber Embedded Lengthmentioning

confidence: 99%

Modeling the Tensile Behavior of Fiber-Reinforced Strain-Hardening Cement-Based Composites: A Review

et al. 2023

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Strain-Hardening Cement-Based Composites (SHCCs) exhibit high toughness and durability, allowing the design of resilient structures. Despite the exceptional properties of SHCC and the current modeling techniques, the widespread use of the composite is limited. One limiting factor is developing and validating analytical models that could be used for optimizing mixes and designing structural elements. Furthermore, the composite mechanical response is complex and depends on several phenomena, such as fiber pullout, fiber orientation and distribution, size effect, fiber content, group effect, embedding length, fiber dimensions, and matrix strength. In this context, this research presents the state-of-the-art on the micro- and mesomechanisms occurring in SHCC during cracking and robust techniques to predict its tensile behavior accounting for such phenomena already proved experimentally. The study is relevant for designers and the scientific community because it presents the gaps for the research groups to develop new investigations for consolidating SHCC, which is a material to produce resilient structures.

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A Review on Hybrid Fiber-Reinforced Self-compacting Concrete: Properties & Challenges

Dahake,

Shinde

2024

Iran J Sci Technol Trans Civ Eng

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Interfacial mechanics of steel fibers in a High-Strength Fiber-Reinforced Self Compacting Concrete

Cited by 10 publications

References 60 publications

Mechanical Properties and Crack Resistance of Basalt Fiber Self-Compacting High Strength Concrete: An Experimental Study

Mechanical Properties and Crack Resistance of Basalt Fiber Self-Compacting High Strength Concrete: An Experimental Study

Modeling the Tensile Behavior of Fiber-Reinforced Strain-Hardening Cement-Based Composites: A Review

A Review on Hybrid Fiber-Reinforced Self-compacting Concrete: Properties & Challenges

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