Young’s modulus of fiber-reinforced and polymer-modified lightweight concrete composites

Kurugöl, Sedat; Tanaçan, Leyla; Ersoy, Halit Yaşa

doi:10.1016/j.conbuildmat.2007.03.017

Cited by 30 publications

(12 citation statements)

References 3 publications

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“…Thus, 0.75% fiber addition transferred the maximum stress in the elastic stage of steel fiber‐reinforced CS concrete. A similar finding was observed by Kurugol et al and Mo et al who worked on steel fiber‐reinforced LWC.…”

Section: Resultssupporting

confidence: 89%

Characterization of eco‐friendly steel fiber‐reinforced concrete containing waste coconut shell as coarse aggregates and fly ash as partial cement replacement

Prakash¹,

Thenmozhi²,

Raman

et al. 2019

Structural Concrete

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This study investigates the effect of steel fiber addition into eco‐concrete made with fly ash, an industrial by product, as partial cement replacement material, and coconut shell, an agricultural waste, as coarse aggregates, on the mechanical properties. Two different mixes were developed, one with coconut shell only as coarse aggregates, and the other with both conventional aggregates and coconut shell as coarse aggregates. The cement content was replaced with class F fly ash at 10% by weight. Steel fibers of 0.25, 0.5, 0.75, and 1.0% by volume of concrete were used. The properties investigated were slump, density, ultrasonic pulse velocity, compressive strength, split tensile strength, flexural strength, and modulus of elasticity (MOE). The findings indicated that the addition of steel fibers resulted in a reduced slump and slightly increased density in the fresh concrete mixes. Meanwhile, enhancements of up to 39% compressive strength and 17% MOE were also obtained. A substantial improvement in split tensile strength and flexural strength were also observed. Steel fiber addition also significantly reduced the brittleness of concrete containing coconut shell. The outcomes of the experiment revealed that steel fiber addition yielded a positive result on the mechanical properties of coconut shell concrete.

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Section: Resultssupporting

confidence: 89%

Characterization of eco‐friendly steel fiber‐reinforced concrete containing waste coconut shell as coarse aggregates and fly ash as partial cement replacement

Prakash¹,

Thenmozhi²,

Raman

et al. 2019

Structural Concrete

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“…Despite incomparably higher strength of steel fibres, they are not usually able to change compressive strength of the composite because of their insignificant volume contribution (if V f ≤ 2%). It should be noted that sometimes research even shows the decrease of compressive strength and/or modulus of elasticity, resulting from steel fibre incorporation (Kurugöl et al 2008;Kayali et al 2003;Altun et al 2007). These cases may probably be explained by inappropriate rheological properties of the mixture, preventing it from being homogeneous and well compacted.…”

Section: Densitymentioning

confidence: 99%

“…The most popular additives applied to SLWAC to improve its properties are fly ash and silica fume. But there is also some research into improving lightweight concrete characteristics by adding less conventional materials such as: catalyst waste material (Mačiulaitis et al 2009), polymers (Kurugöl et al 2008); and different types of fibres: polymer (Kayali et al 2003(Kayali et al , 1999Bilodeau et al 2004;Chen and Liu 2005;Arisoy and Wu 2008;Tanyildizi 2009;Perez-Pena and Mobasher 1994;Noumowe et al 2009;Toutanji et al 2010;Xu et al 2010), steel (Kayali et al 2003(Kayali et al , 1999Liu 2005, 2004;Gao et al 1997;Balendran et al 2002;Campione and Miragla 2001;Campione and La Mendola 2004;Campione et al 2005;Rao and Seshu 2003), glass (Perez-Pena and Mobasher 1994;Mirza and Soroushian 2002;Park et al 1999), carbon (Chen and Liu 2005) or hybrid (Chen and Liu 2005). It should be emphasized that generally the number of publications and research projects on how fibres influence lightweight concrete, as well as the number of applications of SLWAC reinforced with fibres in structures are essentially lower than in the case of normal weight concrete.…”

Section: Introductionmentioning

confidence: 99%

Modification of Properties of Structural Lightweight Concrete With Steel Fibres / Lengvojo Betono Savybių Modifikavimas Plieninėmis Fibromis

Domagała

2011

Journal of Civil Engineering and Management

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Structural lightweight aggregate concrete (SLWAC) is an alternative building material to normal-weight one, due to its ability to reach a relatively high compressive strength at still significantly lower density. Nevertheless, the application of lightweight aggregate instead of normal-weight one to concrete must result in deterioration of some characteristics of the composite. One of the methods of improving SLWAC properties is incorporation of fibers into concrete. This paper focuses on the influence of steel fibres on modification of properties of structural lightweight concrete with sintered fly ash aggregate. Two different concrete mixtures, producing various levels of matured composite density and compressive strength, were modified with three dosages of fibers: 30, 45 and 60 kg/m3. The applied amounts did not result in significant deterioration of the rheological parameters of concrete mixtures. Despite relatively low volume content of fibres, a considerable increase of flexural and tensile splitting strength was observed. Fibres also improved concrete shrinkage as well as post-peak deformability in uni-axial compression. The effect of steel addition on compressive strength proved to be dependent on specimen type. Nevertheless, it was not as crucial as in the case of the above characteristics. However, the modulus of elasticity of SLWAC was not affected by fibre addition. Santrauka Konstrukcinis su lengvaisiais užpildais betonas (SLWAC) yra normalaus svorio statybinių medžiagų alternatyva, turinti mažesnį tankį ir gebėjimą pasiekti gana didelį gniuždomąjį stiprį. Nepaisant to, lengvieji užpildai, naudojami vietoj normalaus svorio užpildų, realiai gali pabloginti kai kurias kompozito savybes. Vienas iš lengvojo betono SLWAC savybių tobulinimo būdų yra plieninių fibrų įterpimas į betono sudėtį. Šiame darbe aptariamas plieninių fibrų poveikis konstrukcinio lengvojo betono su lakiaisiais pelenais savybėms. Tikslui pasiekti buvo parinktos pagal tankį ir gniuždomąjį stiprį dvi skirtingos betono sudėtys su skirtingais (30, 45 ir 60 kg/m3) plieninių fibrų tankiais. Paruošti bandiniai buvo naudoti gniuždomajam stipriui ir kitoms savybėms nustatyti. Tyrimų rezultatai parodė, kad plieninių fibrų priedas nepablogino reologinių betono mišinio rodiklių. Nepaisant palyginti mažo fibrų kiekio, labai padidėjo bandinių lenkiamasis ir tempiamasis stipris. Fibros taip pat pagerino deformacines betono savybes. Gauto kompozito gniuždomasis stipris iš dalies priklausė nuo naudojamų plieninių fibrų charakteristikų. Tačiau plieninių fibrų priedas nepakeitė SLWAC tamprumo modulio.

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“…If the Young's modulus of the fibres is higher than that of the reference plain concrete, the resulting FRC shall exhibit increased stiffness [26]. However, there are other influencing factors that can lead to a different outcome.…”

Section: Introductionmentioning

confidence: 99%

Influence of type and dosage of micro-fibres on the physical properties of fibre reinforced mortar matrixes

Simões

Costa

Dias-da-Costa

et al. 2018

Construction and Building Materials

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An experimental study is herein presented focusing the physical properties of fibre-reinforced mortar. A reference mortar mixture was adopted and three different types of reinforcement with micro fibres (steel, polypropylene and glass) were adopted, adding different volumetric dosages, ranging from 0.5% to 2%, in 0.5% increments. The influence of each type of fibre and dosage on the properties of the mixture, including workability, density, porosity, and Young's modulus was analysed. In summary, it was observed that the workability was extremely reduced for polypropylene and glass fibres. It was found that this parameter has an important role in terms of porosity and bulk density. The latter property decreased until 8% when polypropylene or glass fibres were added to the reference mixture. However, the porosity was significantly higher for mixtures with those fibres, with values reaching nearly twice the porosity of the reference mixture.The dynamic Young's modulus was not highly sensitive to the presence of steel fibres, with a reduction lower than 5% in all tested dosages. In the case of mixtures reinforced with polypropylene fibres and glass fibres, this reduction has reached at most 16% and 13%, respectively. This effect was even higher for the static Young's modulus, experiencing a maximum reduction of 32%, for a 0.5% dosage of polypropylene fibres.

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Young’s modulus of fiber-reinforced and polymer-modified lightweight concrete composites

Cited by 30 publications

References 3 publications

Characterization of eco‐friendly steel fiber‐reinforced concrete containing waste coconut shell as coarse aggregates and fly ash as partial cement replacement

Characterization of eco‐friendly steel fiber‐reinforced concrete containing waste coconut shell as coarse aggregates and fly ash as partial cement replacement

Modification of Properties of Structural Lightweight Concrete With Steel Fibres / Lengvojo Betono Savybių Modifikavimas Plieninėmis Fibromis

Influence of type and dosage of micro-fibres on the physical properties of fibre reinforced mortar matrixes

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