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

Meesala, Chakradhara Rao

doi:10.1002/suco.201900052

Cited by 55 publications

(44 citation statements)

References 70 publications

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“…Lower dosages of fiber in normal concrete, in contrast, behave differently (e.g., under 30 MPa). In general, the mechanical properties of concrete with a lower compressive strength will be improved through the addition of fibers [49,50]. The space between concrete and fibers is filled with air, which already starts to accumulate during the mixing process between the adhesive surfaces.…”

Section: Compressive Strengthmentioning

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: Compressive Strengthmentioning

confidence: 99%

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

et al. 2021

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“…Fluid penetration resistance of fiber‐reinforced concrete (FRC) is always lower than the corresponding plain mix 3,12,32,33 . Since fibers introduce additional ITZs in the binder matrix of concrete; therefore, lengths and numbers of microchannels are increased which favors deeper and faster penetrations of harmful chemicals 3 .…”

Section: Introductionmentioning

confidence: 99%

Influence of different fibers on mechanical and durability performance of concrete with silica fume

Ali

Raza

Hussain

et al. 2020

Structural Concrete

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Durability and ductility of plain cement concrete (PC) can be upgraded by the simultaneous incorporation of fibers and supplementary cementitious materials. To this end, influence of different fibers such as steel fiber (SF), glass fiber (GF), carbon fiber (CF), and polypropylene fiber (PF) is studied on mechanical and durability properties of concrete with and without silica fume. Silica fume was used as 10% by mass replacement of ordinary Portland cement. Various mechanical and durability properties were studied such as compressive strength, split tensile strength, flexural strength, water absorption (WA), chloride penetration (CP), and acid attack resistance of concrete. The results of testing revealed that silica fume improved the efficiency of fibers in resisting the tensile and flexural loads. The composite effect of fiber and silica fume was more beneficial than the sum of the effects of their individual incorporation. Steel fiber‐reinforced concrete (SFRC) showed better mechanical performance at 28 days as compared to other FRCs but CFRC showed better performance at 180 days. PFRC and CFRC exhibited better durability performance than SFRC and GFRC. Silica fume helped in reducing the WA and CP of FRCs and improved their acid attack resistance.

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“…The results show that the compressive strength decreases with increasing fiber content. For the normal strength concretes, the higher dosage will increase compressive strength (research by Aslani and Meesala [41,42] with the strength class under 30 MPa), but the opposite trend is valid for higher strength concretes (research by Zhang et al [43] with a compressive strength up to 100 MPa). The space between concrete and fibers is filled with air.…”

Section: Concrete MIX Designmentioning

confidence: 99%

Influence of Different Fiber Dosages on the Behaviour of Façade Anchors in High-Performance Concrete

et al. 2021

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The behaviour of façade anchors in high performance fiber reinforced concrete (HPFRC) has not been investigated in sufficient detail in recent years. The regulations in the European Technical Approvals also do not fully describe the load-bearing capacity of anchor systems. Due to the increase in the production of HPFRC elements, it is necessary to analyse the impact of added fibers in the concrete composition on the behaviour of anchors. In particular, the behaviour of anchors in filigree façade elements, which is one of the main application areas of the programme of polypropylene (PP) fiber-reinforced concrete, is therefore analysed. With a sufficient content of PP fibers surrounding the steel anchors oriented in an optimal direction, the fibers may enhance both the load-bearing capacity of anchors and the ductility of concrete. However, unfavourable effects on the installation process or even on the load-bearing capacity may also occur due to unfavourable fiber orientation. Therefore, tensile and punching tests were carried out in uncracked concrete with different types of anchor systems containing a tension anchor and an adjustable spacer bolt. The PP fiber content of the concrete component varied during the tests.

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

Cited by 55 publications

References 70 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 fibers on mechanical and durability performance of concrete with silica fume

Influence of Different Fiber Dosages on the Behaviour of Façade Anchors in High-Performance Concrete

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