Mechanical properties of self-compacting concrete reinforced with polypropylene fibres

Gençel, Osman; Özel, Cengiz; Brostow, Witold; Martínez-Barrera, Gonzalo

doi:10.1179/143307511x13018917925900

Cited by 141 publications

(67 citation statements)

References 24 publications

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“…This is due to the ability of fibres to fill voids in concrete when higher content of fibres is added to the concrete mixture. This result was also achieved by O. Gencel [25], who found that the void content of the concrete reduces with increasing the fibre content. It is also evident that the concrete mixture with longer fibre length (100% 24 mm), Mixture 8, had slightly lower air content values than the concrete with shorter fibres (M9-M11).…”

Section: Air Entrainmentsupporting

confidence: 64%

Mechanical Performance of Reinforced Concrete with Different Proportions and lengths of Basalt Fibres

Elshafie¹,

Boulbibane²,

Whittleston³

2016

J Material Sci Eng

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This paper discusses the effect of the fraction (0.2-0.3% by volume) and length (22 mm and 24 mm) of basalt fibre on the mechanical properties of concrete. The paper aims to evaluate the effect of different combinations of basalt fibres on the mechanical properties of concrete, as well as identify the best basalt fibre length and content that have the optimum influence on concrete. This paper is considered to be distinct from other research work as it fills the literature gap by presenting new unknown facts and also adds new knowledge. For example, it identifies the best basalt fibre length and content combination that demonstrates an improvement in the mechanical properties of concrete. It suggests the use of a blend of 12 mm short and 24 mm long fibres as they have a significant effect on the mechanical properties of concrete, it validates the results obtained from the laboratory by using a statistical analysis of variance ANOVA software, as well as determine the correlation between the mechanical properties of concrete. The results showed that the optimum basalt fibre length and content that enhanced the mechanical properties of concrete is 24 mm long fibre with content of 0.2% by the total volume of concrete. It also show that changing basalt fibre length and content enhance not only both tensile and flexural strengths of concrete, but also reduce its compressive strength, workability and air content of concrete, as well as maintain the unit weight and modulus of elasticity values. In this context, the incorporation of basalt fibres within the mixture becomes an important parameter for strengthening concrete in the construction industry.

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Section: Air Entrainmentsupporting

confidence: 64%

Mechanical Performance of Reinforced Concrete with Different Proportions and lengths of Basalt Fibres

Elshafie¹,

Boulbibane²,

Whittleston³

2016

J Material Sci Eng

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“…Such fibers are usually used to improve the early-age shrinkage and crack resistance of cement-based materials. Related researches indicate that SCC reinforced with polypropylene monofilament fiber possesses excellent workability [3][4][5][6]; polypropylene monofilament fiber can markedly improve the performance of early-age shrinkage and crack resistance of SCC [7][8] and increase the tensile strength (including flexural-tensile strength and splitting strength) [5,[9][10], fracture toughness [11][12] and impact resistance [13], as well as the high/low temperature performance and water impermeability of the concrete [3,[14][15][16], however, the chloride ion permeability of the concrete increases to a certain degree [3,17]. Fibrillated polypropylene fiber shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Impermeability Durability of SCC Reinforced with Fibrillated Polypropylene Fiber

He¹,

Li²,

Shen³

2015

TOCIEJ

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Abstract:The paper studied the influences of the volume content and slenderness ratio of fibrillated polypropylene fiber on the impermeability durability of self-consolidating concrete (SCC) reinforced with the fibrillated polypropylene fiber, and proposed to use the modified relative permeability coefficient method to evaluate the water-resistant properties of SCC reinforced with the fiber. Also, the influence mechanism of the fiber on the permeability of the concrete has been analyzed according to the mercury injection test, scanning electronic microscope (SEM) observation and the basic principles of fracture mechanics. Results showed that: 1) the total porosity of SCC gradually increased with the increase in the fiber content; 2) the harmful porosity of SCC decreased firstly and then increased with the increase in the fiber content, while the harmful porosity increased with the increase in the fiber length; 3) when the reference mix proportion of SCC was kept constant, the fiber volume content was not more than 0.10 %, and the appropriate fiber length ranged from 12 to 15mm; 4) when the volume content is no more than 0.15%, the hardened SCC reinforced with fibrillated polypropylene fiber possessed good water impermeability gradation ( P12); the splitting strength and flexural tensile strength of the hardened SCC reinforced with fibrillated polypropylene fiber increased with the addition of the fiber content; the relative water penetration coefficient of the hardened SCC reinforced with fibrillated polypropylene fiber decreased with the addition of the fiber content firstly and then increased; the Coulomb value first increased smoothly (the maximum Coulomb value is less than 2000C, and low according to JTJ/T 193-2009 and ASTM C 1202), and then increased sharply.

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“…From the test results at Table 12 and Figure 11, it can be concluded that adding (P.P.F) can increase the splitting strength of concrete to different degrees, due to the ability to delay the fine-crack formation and fixing their propagation [27], the splitting strength of (RC25%-PPF0.025%), (RC50%-PPF0.050%), and (RC100%-PPF0.15%) increased 4.3%, 8.4%, 14% and 3.3% respectively, in splitting tensile strength compared with control concrete. Moreover, the optimum increasing in the tensile strength found in the mixture of 0.1% (P.P.F) by volume and 75% of (RAC) was about (5.1%).…”

Section: Splitting Tensile Strengthmentioning

confidence: 99%

“…Moreover, the use of fibers helps in reducing the permeability of concrete and its tendency to bleed [2]. Recycled aggregates are produced from demolition waste materials, with the largest source being the construction.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Recycled Self-Compacting Concrete Reinforced with Polypropylene Fibres

Ibrahm¹

2017

J Archit Eng Tech

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Journal of Architectural Engineering Technology AbstractThis paper intends to study the possibility of producing fiber recycled self-compacting concrete (FRSCC) using demolitions concrete as a coarse aggregate. Polypropylene fibers (P.P.F) were used in recycled self-compacting concrete (RSCC) with different percentages of coarse recycled concrete aggregate. Nine concrete mixtures were set up to accomplish the objective proposed at this paper. Polypropylene fibers fraction changed from 0% to 0.15% by the volume of concrete and the ratio replacement of recycled coarse aggregate with natural aggregate was 25%, 50%, 75%, and 100%. The fresh properties of (FRSCC) and (RSCC) were assessed utilizing V-funnel, L-box and slump flow tests. Flexural strength, compression strength, and tensile strength tests were performed with a specific end goal to examine mechanical properties. The results indicate that the optimum volume fraction of polypropylene fibers was (0.1%) for the mixes contained recycled coarse aggregate (75%), for optimum content of (P.P.F), the compression strength, flexural strength, and splitting tensile strength; improved by (34%), (14%), and (8.1%), respectively with consideration to control mix. Also the flexural strength and the tensile strength for the mixes were improved with increasing the fibers ratio compared with control mix.

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Mechanical properties of self-compacting concrete reinforced with polypropylene fibres

Cited by 141 publications

References 24 publications

Mechanical Performance of Reinforced Concrete with Different Proportions and lengths of Basalt Fibres

Mechanical Performance of Reinforced Concrete with Different Proportions and lengths of Basalt Fibres

Impermeability Durability of SCC Reinforced with Fibrillated Polypropylene Fiber

Mechanical Behavior of Recycled Self-Compacting Concrete Reinforced with Polypropylene Fibres

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