Steel Fibers Concrete
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. Mullite macro-needles for reinforcement of refractory castables
Abstract Ceramic macro-needles incorporation as reinforcement in commercial refractory castable was studied. Ceramic macro-needles (Ø2x20 mm) were made from kaolinite clay and gibbsite to obtain mullite as the main crystalline phase. Specimens with the ceramic reinforcement were evaluated by compression after being treated at two temperatures (815 and 1400
Cerâmica. Publicado em: 2022
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2. Avaliação do grau de orientação de fibras de aço induzida na moldagem de elementos planos com concreto autoadensável
RESUMO O uso de concreto autoadensável (CAA) aliado ao concreto reforçado com fibras (CRF) tem sido objeto de várias pesquisas recentes. A combinação da fluidez do CAA com o uso de fibras aumenta a probabilidade de que, no processo de lançamento, seja possível causar orientação preferencial nas fibras, inclusive em elementos planos. Isto pode ser be
Matéria (Rio J.). Publicado em: 10/06/2019
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3. Experimental studies of short concrete reinforced steel fiber beams under bending
Resumo Este estudo apresenta os resultados do rompimento de dois grupos de vigas de concreto com fibras de aço. Cada grupo foi composto de 4 vigas com vão de 300 mm, 4 com vão de 500 mm e 4 com vão de 800 mm e seção de 15 cm x 15 cm. A variação dos grupos se deu pela quantidade de fibras (I com 40 kg/m³ e II com 60 kg/m³). Foram avaliados o comport
Rev. IBRACON Estrut. Mater.. Publicado em: 20/05/2019
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4. Experimental analysis of load capacity in beams with steel fiber reinforcement on the compression face
Resumo A utilização de fibras de aço no concreto visa aumentar principalmente a tenacidade, em função da aderência das fibras à matriz cimentícia. Entretanto como existem diversas tipologias de fibras de aço, as principais diferenças estão no fator de forma (relação entre comprimento e diâmetro), na geometria das fibras, e, na caracterização
Rev. IBRACON Estrut. Mater.. Publicado em: 2019-02
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5. Monitoreo mediante Emisión Acústica de vigas de hormigón de alta resistencia con y sin fibras expuesto a alta temperatura
ABSTRACT The addition of fibers to the cementitious matrix, giving rise to fiber-reinforced concrete, aims to improve the low ductility observed in concrete mechanical response under different load scenarios, particularly under direct tension. In this work, cracking and mechanical degradation processes of concrete elements using acoustic emission technique a
Matéria (Rio J.). Publicado em: 19/07/2018
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6. Experimental analysis of the efficiency of steel fibers on shear strength of beams
Abstract The efficiency of steel fibers for shear strength of reinforced concrete beams is assessed. Four beams were evaluated: control consisted of one beam without any steel fibers and three beams with reinforced concrete with steel fibers. All beams were reinforced for shear strength by a minimum reinforcement rate. The influence of fiber content added to
Lat. Am. j. solids struct.. Publicado em: 16/07/2018
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7. Mechanical behaviour of steel fiber reinforced concrete with stone powder
ABSTRACT Nowadays, there is an increasing interest in the development of eco-friendly materials. Thus, environmental challenges due to the necessity of reducing worldwide levels of CO2 emissions, to limit the energy consumption and to use industrial waste are promoting an increasing effort to find viable alternatives to minimize pollution from the main produ
Matéria (Rio J.). Publicado em: 20/07/2017
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8. Structural Behavior of SFRC Beams strengthened with GFRP Laminates: An Experimental and Analytical Investigation
ABSTRACT This paper presents the experimental results of a reinforced concrete beams (RC) strengthened with internal steel fibers (SF) and external glass fiber reinforced polymer laminates (GFRP). The research work studied the load carrying capacity, deformation, crack width and ductility of the reinforced concrete beams strengthened with different steel fib
Braz. arch. biol. technol.. Publicado em: 23/01/2017
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9. Strain Rate Dependent Behavior and Modeling for Compression Response of Hybrid Fiber Reinforced Concrete
Abstract This paper investigates the stress-strain characteristics of Hybrid fiber reinforced concrete (HFRC) composites under dynamic compression using Split Hopkinson Pressure Bar (SHPB) for strain rates in the range of 25 to 125 s-1. Three types of fibers - hooked ended steel fibers, monofilament crimped polypropylene fibers and staple Kevlar fibers were
Lat. Am. j. solids struct.. Publicado em: 2016-09
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10. Workability Analysis of Steel Fiber Reinforced Concrete Using Slump and Ve-Be Test
This works present an experimental study addressing the workability of fiber reinforced concrete (FRC). Only conventional measurements, such as slump and Ve-Be test, were used to evaluate the effect of the fiber content in the mixture. The fiber content shows to be of great influence in the concrete mobility reducing the slump and increasing exponentially th
Mat. Res.. Publicado em: 03/11/2015
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11. Prediction of energy absorption capability in fiber reinforced self-compacting concrete containing nano-silica particles using artificial neural network
The main objective of the present work is to utilize feedforward multi-layer perceptron (MLP) type of artificial neural networks (ANN) to find the combined effect of nano-silica and different fibers (steel, polypropylene, glass) on the toughness, flexural strength and fracture energy of concrete is evaluated.For this purpose, 40 mix plot including 4 series A
Lat. Am. j. solids struct.. Publicado em: 2014-11
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12. Waste steel wires modified structural lightweight concrete
Nowadays, the use of different waste fibers in concrete has started to increase rapidly due to some reasons such as economic savings and positive effects on the environment. In this study, waste steel wires taken from reinforcement and formwork which were previously utilized in construction projects, were employed in structural lightweight concrete (SLWC). T
Mat. Res.. Publicado em: 28/07/2014