Mechanical properties of steel and polymer fiber
As highlighted in the previous sections the fiber type to be adopted in the mixture has profound effects on mechanical behavior of FRC elements In this section the influence of using two types of reinforcing fibers including polymer fibers and steel fibers on compressive flexure and tensile strength of PFRC and SFRC specimens are discussed
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Each type of stainless steel fiber used to reinforce the studied alumina refractory concrete exhibits different mechanical behavior at different temperatures For example at elevated temperatures of 600 °C and 1000 °C the use of knurled fibers improves 100 the mechanical behavior when compared to straight fiber considering the peak stress and 50 increase when compared to the wavy fiber
Get PriceFibers Free Full Text Effect of High Temperature on
The effect of high temperature on the mechanical properties of concrete reinforced by steel fibers with various aspect ratios has been investigated in this study Concrete specimens were fabricated from four different concrete mixtures and cured for 28 days After curing and natural drying the specimens were annealed at a temperature of 500 °C for 3 h in an electric furnace
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Mechanical Behavior of Ultra High Performance Concrete Reinforced with Hybrid Different Shapes of Steel Fiber CICTP 2012 Multimodal Transportation Systems Convenient Safe
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Reusing building materials and concrete of old buildings can be a promising strategy for sustained development In buildings the performance of materials under elevated temperatures is of particular interest for determining fire resistance In this study the effect of pozzolan and aggregate type on properties of concrete exposed to fire was investigated
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The pullout behaviour of steel fibres from a refractory castable was characterized through high temperature pullout tests and scanning electron microscopy observations The effects of the firing temperature the testing temperature and the inclination angle
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AbstractIn this research the constitutive behavior of high performance fiber reinforced fibers and twisted steel fibers with ratios of 1 2 and 3 by volume of the mixture Mixtures were manufactured containing one fiber type referred to here as a mono mixture or containing both fiber types a hybrid mixture Mechanical Behavior
Get PriceSteel Fibrean overview ScienceDirect Topics
Steel fibre reinforced refractories have shown excellent performance in a number of refractory application areas including ferrous and nonferrous metal production and processing petroleum refining applications and rotary kilns used for producing Portland cement and
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The pullout behaviour of steel fibres from a refractory castable was characterized through high temperature pullout tests and scanning electron microscopy observations The effects of the firing temperature the testing temperature and the inclination angle on the pullout performances were quantified Complementary optical microscopy observations allowed to identify the pullout
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The present study investigated effect of fiber type and hybrid modes on flexural toughness and fracture mechanics behavior of ultrahigh performance concrete UHPC with coarse aggregates was investigated Results showed that with inclusion of coarse aggregate UHPC had a higher compressive strength and elastic modulus and that different fiber
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Sintering Behavior Microstructure and Mechanical Properties A Comparison among Pressureless Sintered Ultra Refractory Carbides Laura Silvestroni 1 and Diletta Sciti 1 1 CNR ISTEC Institute of Science and Technology for Ceramics Via Granarolo 64 I 48018 Faenza Italy
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Wang Z et al Mechanical behavior of Al based matrix composites reinforced with Mg58Cu28 5Gd11Ag2 5 metallic glasses Adv Powder Technol 25 635–639 2014
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PDF Steel fibers and mechanical behavior of refractory In this paper the law of fatigue deflection and the characteristics of fatigue damage of Steel Fiber Reinforced Prestressed Concrete Slab SFRPCS 0 1 2 under different stress level 0 75
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Stainless fibers significantly increase the tensile strength of the refractory in its critical period and greatly increase its energy absorption capability Though discontinuous fibers act as a crack arrestor and form a mechanical bond after cracks may occur Stainless steel fibers greatly improve the flexural strength of the castable
Get PriceAn overview of refractory ceramic fibers Thermal
Refractory ceramic fibers are synthetic fibers produced by the melting and blowing or spinning of calcined kaolin clay or a combination of alumina Al 2 O 3 silicon dioxide SiO 2 or other oxides usually in a 50 50 weight ratio The most common grade RCF fiber provided by most USA based fabricators and suppliers is the high purity grade having a temperature rating of around 1 260°C max
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Mechanical Behavior of Ultra High Performance Concrete Reinforced with Hybrid Different Shapes of Steel Fiber CICTP 2012 Multimodal Transportation Systems Convenient Safe
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adding steel fibers on the mechanical properties of UHPC such as compressive strength modulus of elasticity poisson s ratio flexural strength and tensile strength The major parameters included in this research were the volume fraction of steel fibers and aspect ratio The
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Today the use of special technologies in the admixture of concrete has made tremendous progress but the problem that has always existed in the construction of concrete members is the brittleness and lack of loading bearing after cracking which leads to reduced strength and energy absorption One of the best ways to fix this is to reinforce the concrete with steel fibers
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The refractory castable considered is an ultralow cement content and bauxite based castable made of bauxite aggre gates fumed silica alpha alumina and of a calcium alumina cement The material is reinforced with 1 5vol of stainless steel fibers Two fiber shapes are considered on one hand straight fibers characterized by a 12 5mm length
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Effects of Steel Fibers Geometry on the Mechanical Properties of SIFCON Concrete This research aims to shed light on the effect of steel fiber shape length diameter and aspect ratio on the mechanical properties of slurry infiltration fiber reinforced concrete SIFCON Hsu Lin Showmay and ChengTzu Thomas Hsu Stress strain behavior
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Mechanical Behavior of Ultra High Performance Concrete Reinforced with Hybrid Different Shapes of Steel Fiber CICTP 2012 Multimodal Transportation Systems Convenient Safe
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This intends to examine the flexural behavioral characteristics of hybrid UHPC using a mix of steel fibers with different lengths Three types of fibers are adopted with fixed diameter of 0 2 mm and lengths of 13 16 3 and 19 5 mm aspect ratio of 65 82 and 98 respectively Comparative analysis of the flexural strength load bearing capacity deflection and toughness is performed adopting a
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This study examines the properties of fiber reinforced reactive powder concrete FR RPC Steel fibers glass fibers and steel glass hybrid fibers were used to prepare the FR RPC The non fibrous reactive powder concrete NF RPC was prepared as a reference mix The proportion of fibers by volume for all FR RPC mixes was 1 5 Steel fibers of 13 mm length and 0 2 mm diameter were used to
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Allie 11/07/2017 04 18 Alumina silica firebrick belong to the group of alumina silica refractory products This kind of products are applied widely in iron steel glass
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The use of Flex Ten Stainless Steel Fibers in the reinforcement of refractory materials provides substantial increase in refractory life and therefore a considerable reduction in maintenance costs Stainless fibers significantly increase the tensile strength of the refractory in its critical period and greatly increase its energy absorption
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Thermo mechanical behavior of stainless steel fiber reinforced refractory concrete Experimental and numerical analysis Highlights Experimental tests showed that the knurled fiber presented an improved thermomechanical behavior up to 1000 °C The FE model can extrapolate investigations to structures in practice and save enormous laboratory time
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In refractory materials technology there are two areas for the use of fibers reinforcement with polypropylene and/or metal fibers threads of refractory low cement concretes and objects made from them and fiber reinforcing materials eco wool basalt wool kaolin fiber of torcrete concrete for the working layer of a tundish
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of fibers including steel polyphenylene sulfide PPS and glass fibers with four different volumes fractions and one specimen without fibers as a reference sample All plans were subjected to fresh concrete tests For mechanical behavior of concrete compressive tensile
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Stainless steel fibers are widely used as reinforcement in the refractories due to advantages such as high thermal compatibility cost effective on account of long life and effective resistance to corrosion at high temperatures The purpose of this research is to investigate the thermomechanical behavior of alumina based refractory concrete
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the refractory interface to the steel 4 Mechanical behavior of steel casting refractory components The mechanical behavior of refractory components is by far more complex than generally admitted ry materials behave like composite stru eva This is mainly caused by the composite nature of the component and the large temperature range in use
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The applied steel fibers proved to be high efficiency and led to ductile behavior of compressed high strength concrete elements along with the desired effect at long term loading In addition there was an obvious dependence of transverse deformation on the longitudinal behavior at the ultimate limit state
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The thermomechanical effects on the behavior of carbon TRC using refractory matrix were explored in detail Regarding the use of TRC as reinforcements the mechanical properties of concrete beams or columns reinforced with TRC textile reinforced mortar TRM or fiber reinforced polymer FRP at high temperatures have also been studied
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Properties of fresh concrete and elastic and mechanical properties of hardened concretes are also presented Based on laboratory prepared test specimens fiber reinforced refractory concrete was workable even at high fiber concentrations 1 5 by volume There was no balling or tangling of fibers during mixing and placing
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of mono fibers and hybrid fibers on the mechanical properties split tensile strength flexure behavior of hybrid fiber reinforced concrete The specimens incorporated steel and polypropylene fibers in the mix proportions of 0 5 of use of M25and M30 grade of concrete reinforced with steel fibers shows a similar or even better
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