Experimental Study on Basic Properties of Ultra-High-Strength Fiber-Reinforced Concrete Containing Ordinary Portland Cement and Various Fiber

Otsuka, Ryosuke; Fujiwara, Hiromi; Maruoka, Masanori; Watanabe, Fumio

doi:10.14250/cement.72.300

Cited by 2 publications

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“…The above conclusions are basically consistent with the results found in the literature [5,7,22,35], demonstrating the accuracy of the experimental research results. However, due to limited experimental conditions, in the study of the crack resistance of the basalt fiber self-compacting high-strength concrete, crack observation was measured using a normal 100-times reading microscope.…”

Section: Discussionsupporting

confidence: 93%

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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: Discussionsupporting

confidence: 93%

“…In 2020, the production capacity of basalt fibers represented by China reached 35,500 tons, with a production capacity of 10,900 tons. China's basalt fiber production accounts for 50% of the world's total production [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2023

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Study on fundamental properties of the spraying Ultra High Strength Fiber Reinforced Concrete cured at normal temperature

et al. 2022

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In this study, the hardened properties and spraying characteristics of ultra high strength fiber-reinforced mortar mixed with copper fibers along with nylon fibers and polypropylene fibers are examined. The chemical fibers are added in the expectation that they will prevent cracking during initial curing. It is confirmed that, even with the addition of chemical fibers, the fresh properties of the mortar are similar to those of formulations containing only copper fibers. It is also found spray-application of this formulation achieves sufficient application thickness and that on-site application would be possible.

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Experimental Study on Basic Properties of Ultra-High-Strength Fiber-Reinforced Concrete Containing Ordinary Portland Cement and Various Fiber

Cited by 2 publications

References 2 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

Study on fundamental properties of the spraying Ultra High Strength Fiber Reinforced Concrete cured at normal temperature

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