Experimental method for investigating the impact of the addition of polymer fibers on drying shrinkage and cracking of concretes

Ehrenbring, Hinoel Zamis; Quinino, Uziel Cavalcanti de Medeiros; Silva, Luis; Tutikian, Bernardo Fonseca

doi:10.1002/suco.201800228

Cited by 19 publications

(11 citation statements)

References 28 publications

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“…To understand the behavior of HPC and UHPC as well as concrete in general with fiber addition, scientific measurement methods in experimental research study have recently been published [15]. Typical fibers for HPFRC are made of steel [16], carbon [17], or polymers [18]. Examining the available research literature demonstrates that another material like wool [19], basalt [20], or glass [21] could be successfully added to concrete.…”

Section: Introductionmentioning

confidence: 99%

Influence of Fiber Addition on the Properties of High-Performance Concrete

et al. 2021

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High performance fiber-reinforced concrete (HPFRC) has been frequently investigated in recent years. Plenty of studies have focused on different materials and types of fibers in combination with the concrete matrix. Experimental tests show that fiber dosage improves the energy absorption capacity of concrete and enhances the robustness of concrete elements. Fiber reinforced concrete has also been illustrated to be a material for developing infrastructure sustainability in RC elements like façade plates, columns, beams, or walls. Due to increasing costs of the produced fiber reinforced concrete and to ensure the serviceability limit state of construction elements, there is a demand to analyze the necessary fiber dosage in the concrete composition. It is expected that the surface and length of used fiber in combination with their dosage influence the structure of fresh and hardened concrete. This work presents an investigation of the mechanical parameters of HPFRC with different polymer fiber dosage. Tests were carried out on a mixture with polypropylene and polyvinyl alcohol fiber with dosages of 15, 25, and 35 kg/m3 as well as with control concrete without fiber. Differences were observed in the compressive strength and in the modulus of elasticity as well as in the flexural and splitting tensile strength. The flexural tensile strength test was conducted on two different element shapes: square panel and beam samples. These mechanical properties could lead to recommendations for designers of façade elements made of HPFRC.

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Section: Introductionmentioning

confidence: 99%

Influence of Fiber Addition on the Properties of High-Performance Concrete

et al. 2021

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“…Ehrenbring et al investigated the mechanical properties, drying shrinkage, and cracking of fiber reinforced concrete with different fibers viz. : PP, polyvinyl alcohol (PVA), and recycled polyester at the rate of 0.50%.…”

Section: Introductionmentioning

confidence: 99%

Influence of different types of fiber on the properties of recycled aggregate concrete

Meesala

2019

Structural Concrete

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Utilization of recycled aggregate from the construction and demolition waste as a partial substitution of natural aggregate in the concrete has been increased in the recent times in order to minimize the consumption of natural resources and the harmful effects to the environment. The present investigation mainly focuses on the influence of different fibers on mechanical and other properties of concrete made with 50% of recycled coarse aggregate (RCA) as well as concrete with 100% natural aggregate. Three types of fibers such as Woolen fibers (WF), Glass fibers (GF), and Steel fibers (SF) were used in both normal and recycled aggregate concrete mixes. The workability, compressive strength, split tensile and flexural strengths, modulus of elasticity, density, water absorption and volume of voids, and ultrasonic pulse velocity (UPV) properties of all the mixes were investigated. From the experimental findings it was observed that the fibers significantly improve the mechanical properties of both normal and recycled aggregate concretes. Further among the WF, GF, and SF, SFs had shown more positive impact on the properties of concrete. K E Y W O R D S compressive strength, flexural strength, glass fibers, recycled aggregate concrete, steel fibers, ultrasonic pulse velocity (UPV), woolen fibers

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“…Researchers have engaged in extensive efforts to study the effects of different types of fibers on cracking, shrinkage resistance and toughness properties. Steel fiber and polypropylene fiber are reinforcement materials that are highly valued by researchers because of their outstanding cracking resistance and enhanced tensile strength in concrete [ 2 , 3 , 4 , 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Fractal Dimension of Basalt Fiber Reinforced Concrete (BFRC) and Its Correlations to Pore Structure, Strength and Shrinkage

2020

Materials

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In this study, we focused on exploring the correlations between the pore surface fractal dimensions and the pore structure parameters, strength and shrinkage properties of basalt fiber-reinforced concrete (BFRC). The pore structure of BFRCs with various fiber contents and fiber lengths was investigated using mercury intrusion porosimetry (MIP) measurements. Through Zhang’s model, the fractal characteristics of BFRCs in the whole pore size range and in different pore size ranges were calculated from the MIP test data. The results showed that the addition of BF increased the total porosity, total pore volume and pore area but decreased the average pore diameter, indicating that BFs refined the pore structure of the concrete. BFRC presented obvious fractal characteristics in the entire pore-size range and individual pore-size ranges; generally, the fractal dimension increased with increasing fiber content. Moreover, correlation analysis suggested that the fractal dimension of BFRC in the whole pore-size range (FD) was closely related to the fractal dimension in the macropore region (Dm) and average pore diameter (APD). The influence of pore structure factors on mechanical strength and shrinkage was studied by grey correlation theory, and the results showed that Dm showed positive correlations with strength and fracture energy, with increasing Dm tending to strengthen and toughen the concrete. An increase in fiber content and length was detrimental to reducing the drying shrinkage strain. In the transition pore region, the fractal dimension (Dt) at diameters ranging from 20 to 50 nm and shrinkage strain exhibited a highly linear relation. These results merit careful consideration in macro-property evaluation by using the pore surface fractal dimension in a specific region instead of the whole region. Finally, grey target theory was applied to evaluate the rank of the mechanical strength and shrinkage of concrete, and the results showed that the overall properties of concrete with a BF length of 18 mm and a BF content of 0.06% ranked the best.

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Experimental method for investigating the impact of the addition of polymer fibers on drying shrinkage and cracking of concretes

Cited by 19 publications

References 28 publications

Influence of Fiber Addition on the Properties of High-Performance Concrete

Influence of Fiber Addition on the Properties of High-Performance Concrete

Influence of different types of fiber on the properties of recycled aggregate concrete

Fractal Dimension of Basalt Fiber Reinforced Concrete (BFRC) and Its Correlations to Pore Structure, Strength and Shrinkage

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