Inductive method for the orientation of steel fibers in recycled mortars

Morón, Carlos; Saíz, Pablo; Dorado, M.G.; Morón, Alberto

doi:10.1016/j.conbuildmat.2019.06.113

Cited by 15 publications

(6 citation statements)

References 22 publications

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“…In this work, synthetic fibers of plastic origin were used as reinforcement material in mortars made with recycled aggregate, with the aim of increasing its durability, improving its mechanical resistance and reducing its retraction [49]. The fibers were supplied by SIKA (Madrid, Spain).…”

Section: Fibersmentioning

confidence: 99%

Influence of Recycled Aggregates on the Mechanical Properties of Synthetic Fibers-Reinforced Masonry Mortars

et al. 2021

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The construction sector is one of the main consumers of raw materials and generates a high volume of waste within the European Union. The search for new materials that are more sustainable and respectful of the environment has become a challenge for countries with a high degree of industrialization. In this work, a study of the most relevant properties of masonry mortars made with recycled aggregates and reinforced with synthetic fibers was carried out. Three types of aggregates were used—natural, concrete recycling and ceramic recycling—and two types of reinforcing fibers: polypropylene and polyolefin. In this way, various tests of physical-mechanical characterization and a statistical analysis of the results were carried out. It has been shown that the mortars made from aggregate recycled concrete and reinforced with polypropylene fiber are the ones with the best properties for application in the construction sector, although without improving the properties of traditional mortars made from natural aggregate and without fibers.

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Section: Fibersmentioning

confidence: 99%

Influence of Recycled Aggregates on the Mechanical Properties of Synthetic Fibers-Reinforced Masonry Mortars

et al. 2021

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“…According to previous studies, mechanical properties of fresh concrete could be increased by direct applying of a magnetic field [33][34][35][36][37][38][39][40]. In an study by Soto-Bernal et al [33], it is reported that the compressive strength of cement pastes exposed to weak magnetic fields enhanced up to 13%.…”

Section: Introductionmentioning

confidence: 93%

“…It is also shown that the magnetizing technique can control the orientation of fibers in the intended direction and make an orthotropic concrete. Following this, the effect of magnetic field on bending capacity of recycled mortar containing steel fibers was conducted by Ferrandez et al [35]. The results indicated that the magnetic field could increase the bending capacity of mortar by 10%.…”

Section: Introductionmentioning

confidence: 99%

The effects of uniform magnetic field on the mechanical and microstructural properties of concrete incorporating steel fibers

et al. 2021

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This study investigated the effects of applying a uniform magnetic field (UMF) of flux density 500 mili Tesla (mT) to fresh and hardened concrete specimens with steel fibers at volume ratios of 1 and 1.5% on mechanical and microstructural properties. To attain these objectives, compressive and splitting tensile strengths tests were carried out on the specimens with steel fiber-reinforced concrete (SFRC) at 28 days. Furthermore, the microstructure of SFRC, subjected to the UMF, was assessed via scanning electron microscopy (SEM) images. An electromagnetic instrument, capable of generating a density of 500 mT, was used to produce UMF. Finally, a model equation was proposed to predict the splitting tensile strength of SFRC subjected to the UMF as a function of its compressive strength. The application of UMF to SFRC specimens incorporating 1.5% steel fibers revealed an increase in both compressive and splitting tensile strengths up to about 18.2% and 9.5%, respectively. The SEM analysis indicated that the UMF enhanced the cement hydration process, which is responsible for the higher mechanical strength development of SFRC compared to the control specimen.

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“…Since 2015, researchers have attempted to use a magnetic field to align the direction of steel fibers mixed in concrete and mortar [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ]. This method corresponds to the most active research attempt to artificially align the direction of steel fibers in concrete.…”

Section: Introductionmentioning

confidence: 99%

Changes in Rheological Properties of Mortars with Steel Slags and Steel Fibers by Magnetic Field

Kang¹,

Moon

Kim

2021

Materials

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The effect of a magnetic field on the rheology of mortars with steel slags and fibers was evaluated in this study. The rheology of the mortar measured with and without a magnetic field was compared. The effect of steel fiber addition to normal and steel slag mortars, mix ratio and size of steel fibers, and magnetic field formation position on rheology were evaluated. Steel fiber addition increased the yield stress and viscosity of the normal and steel slag mortars. The increased rheology was almost restored because of the magnetic field applied to the normal mortars. However, the increased rheology of the steel slag mortars with steel fibers was restored only upon the application of the magnetic field, whose position was continuously changed by a power relay. It is deduced that the alignment of the steel fibers by the magnetic field contributes to the rheology reduction of the mortars. However, in the case of steel slag mortar, experimental results demonstrated that steel slag, which is a ferromagnetic material, receives constant force by the magnetic field, which increases the rheology. This is evidenced by the decrease in the rheology of steel slag mortars under a continuously changing magnetic field formation position by power relay.

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Inductive method for the orientation of steel fibers in recycled mortars

Cited by 15 publications

References 22 publications

Influence of Recycled Aggregates on the Mechanical Properties of Synthetic Fibers-Reinforced Masonry Mortars

Influence of Recycled Aggregates on the Mechanical Properties of Synthetic Fibers-Reinforced Masonry Mortars

The effects of uniform magnetic field on the mechanical and microstructural properties of concrete incorporating steel fibers

Changes in Rheological Properties of Mortars with Steel Slags and Steel Fibers by Magnetic Field

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