Rheological and mechanical optimization of a steel fiber reinforced self-compacting concrete using the design of experiments method

Gueciouer, Djamila; Ghernouti, Youcef; Naadia, T.

doi:10.1080/19648189.2019.1697758

Cited by 19 publications

(2 citation statements)

References 18 publications

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“…Flow time increases with increasing fi bre length and fi bres content an observation that was also reported in several other works (23,24). Reinforced mixtures composed of 2.5% of fi bres that are 3 mm long offer less internal resistance to fl ow.…”

Section: Mortar Compositionsupporting

confidence: 81%

Properties of cementitious materials reinforced with alkali-resistant glass fibres as a suitable material for repair applications

Arabi

2020

Cem. Wapno Beton

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The cement matrix reinforced with glass fibres was studied as a suitable material for the repair of damaged structures. Two approaches to mixture designs were tested: the first used a conventional mortar and the second with various cement-sand ratios to optimise the mixture. A compromise between the workability and high fibre ratio was achieved. Cement/sand ratio was found to be crucial for the workability of the mixes, with optimal values within the range 0.4-0.5. Three fibre lengths: 3, 6, and 12 mm were tested. Compression and flexural tests were carried out as well as the measurements of shrinkage evolution, which is a critical factor. Improvement was observed in the flexural behaviour of glass fi bres reinforced cement mortars when the fibre length was increased to 12 mm with a glass fibre content of 2%. However, the compressive strength decreased with higher fibre content.

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Section: Mortar Compositionsupporting

confidence: 81%

Properties of cementitious materials reinforced with alkali-resistant glass fibres as a suitable material for repair applications

Arabi

2020

Cem. Wapno Beton

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“…Through the equivalent diameter concept for steel fibers with the same specific surface, steel fibers are included in the particle size distribution of the granular skeleton. Based on the optimization of the SCC paste model, the rheological and mechanical behaviors are evaluated using the design of the experiment method to identify the composition factors, including the optimized sand ratio and paste volume for self-compacting SFRC, along with a constant fiber factor [18]. (5) Combined with the optimized fiber aggregate skeleton and based on the packing tests, the minimum amount of binder paste is determined according to the self-compacting performance requirements [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Mix Proportion Design of Self-Compacting SFRC with Manufactured Sand Based on the Steel Fiber Aggregate Skeleton Packing Test

Ding

Zhao

et al. 2020

Materials

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A scientific and concise mix design method is an impending problem in the engineering application of self-compacting steel-fiber-reinforced concrete (SFRC). This paper focuses on the mix proportion of self-compacting SFRC, which is influenced by the steel fibers, along with its effects on the packing properties of the steel fiber aggregate skeleton. In total, 252 groups of packing tests were carried out for several main factors, including with various maximum particle sizes for the coarse aggregates, manufactured sand ratios ranging from 50% to 62%, and with different types of hooked-end steel fibers and crimped steel fibers, with volume fractions ranging from 0% to 2.0%. The results indicated that the void content and rational sand ratio of the steel fiber aggregate skeleton increased linearly with the fiber factor. These results provided a basis for the calculation of the binder content and rational sand ratio of the self-compacting SFRC. Combined with the absolute volume design method and the calculation formula for the water-to-binder ratio, a systematical procedure was proposed for the mix proportion design of the self-compacting SFRC. Based on the design method, eight groups of mixtures were cast and tested to verify the adaptability and practicability of the workability, air content, density, cubic compressive strength, and splitting tensile strength of the self-compacting SFRC. Meanwhile, the outcomes of this study confirmed the applicability of using manufactured sand as a complete replacement for natural sand for the self-compacting SFRC.

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Mechanical and rheological properties of fiber‐reinforced 3D printable concrete; in terms of fiber content and aspect ratio

Şahin,

Akgümüş,

Mardani

2024

Structural Concrete

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The aim of this study is to improve the mechanical and dimensional stability properties of 3D printable concrete by using fibers. Ten mixtures containing polypropylene fiber in three different lengths (3, 6, and 12 mm) and ratios (0.2%, 0.4%, and 0.6%) were prepared. Rheological properties, compressive strength, three‐point flexural strength, and drying‐shrinkage performance of 3D printable concrete mixtures were examined in this study. Strength properties were determined by perpendicular and lateral loading. Thixotropic properties of the mixtures were determined using three different approaches (structural build‐up development, hysteresis area and dynamic structural build‐up). The dynamic yield stress value increased with fiber addition up to 0.4% of the total volume. It was determined that this value decreases with the use of fiber above this rate. In terms of mechanical and dimensional stability properties of 3D printable concrete, the optimum fiber length and utilization ratio were 6 mm and 0.4%, respectively. This parameters were adversely affected when fiber utilization ratio was 0.6% and length was 12 mm. Also, there is a strong correlation between structural build‐up development and dynamic structural build‐up.

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Rheological and mechanical optimization of a steel fiber reinforced self-compacting concrete using the design of experiments method

Cited by 19 publications

References 18 publications

Properties of cementitious materials reinforced with alkali-resistant glass fibres as a suitable material for repair applications

Properties of cementitious materials reinforced with alkali-resistant glass fibres as a suitable material for repair applications

Mix Proportion Design of Self-Compacting SFRC with Manufactured Sand Based on the Steel Fiber Aggregate Skeleton Packing Test

Mechanical and rheological properties of fiber‐reinforced 3D printable concrete; in terms of fiber content and aspect ratio

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