An experimental study on the tensile strength of steel fiber reinforced concrete

Olivito, Renato Sante; Zuccarello, F.

doi:10.1016/j.compositesb.2009.12.003

Cited by 306 publications

(134 citation statements)

References 6 publications

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“…According to Equation (10), which is valid during the early stage of cracking, the initial pullout resistance of fibers crossing a section can be estimated using analytical expressions.…”

Section: Resultsmentioning

confidence: 99%

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A Model for the Prediction of the Tensile Strength of Fiber-Reinforced Concrete Members, Before and After Cracking

Vougioukas

Papadatou

2017

Fibers

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Abstract:The tensile behavior of concrete or mortar plays an important role for delaying the formation and propagation of cracks, and also for upgrading the bearing capacity of existing concrete and masonry constructions. Although the presence of steel fibers is known to improve, often considerably, the tensile capacity of concrete members, methods for the quantification of this improvement are still limited. For this reason, a model has been developed for the prediction of the tensile strength of steel fiber-reinforced concrete members, as crack opening occurs. Given the geometry and the physical characteristics of reinforced concrete member and fibers, the model predicts: (1) the number of fibers crossing a crack's surface; (2) the distribution of these fibers in terms of (i) the angle a fiber forms with the crack surface (fiber inclination) and (ii) the embedded length of the fiber at both sides of the surface; (3) resistance to crack opening provided by each fiber, in relation to its position and inclination. On the results of the results obtained, the influence of the number of fibers on the reduction of crack widening in concrete or mortar is remarkable and can be estimated with satisfactory precision. In upgrading existing concrete and masonry constructions, this tensile behavior is found to play important role.

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“…According to Equation (10), which is valid during the early stage of cracking, the initial pullout resistance of fibers crossing a section can be estimated using analytical expressions.…”

Section: Resultsmentioning

confidence: 99%

“…Mechanical characteristics, such as brittleness reduction, can also be improved, though not significantly in terms of strength [5][6][7][8][9][10], except for tensile capacity. More specifically, the contribution of fibers, especially steel fibers, to the tensile capacity of concrete is quite significant.…”

Section: Introductionmentioning

confidence: 99%

A Model for the Prediction of the Tensile Strength of Fiber-Reinforced Concrete Members, Before and After Cracking

Vougioukas

Papadatou

2017

Fibers

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“…The most important properties of fiber concrete are energy absorption, formability and resistance against strikes. These characteristics help FRC to play an important role in concrete technology and to be a cost-effective material in structural issues (Lin, 1992;Su-Taekang et al, 2010;Olivito and Zuccarello, 2010;Seddik and Bencheikh, 2009;Mohammadi et al, 2009;Bencardino et al, 2010). Energy absorption and strengthening of concrete can efficiently reduce the rupture risk in concrete structures, especially under alternative and vibrating loads.…”

Section: Introductionmentioning

confidence: 99%

Prediction of combined effects of fibers and nanosilica on the mechanical properties of self-compacting concrete using artificial neural network

Tavakoli

Omran

Shiade

et al. 2014

Lat. Am. j. solids struct.

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In this research, the combined effect of nano-silica particles and three fiber types (steel, polypropylene and glass) on the mechanical properties (compressive, tensile and flexural strength) of reinforced self-compacting concrete(SCC) is evaluated. For this purpose, 70 mixtures in A, B, C, D, E, F and G series representing 0, 1, 2, 3, 4, 5 and 6 percent of nano-silica particles in replacing cement content are cast. Each series involves three different fiber types and content; 0.2, 0.3 and 0.5% volume for steel fiber, 0.1, 0.15 and 0.2% of volume for polypropylene fiber and finally 0.15, 0.2 and 0.3% of volume for glass fiber. The results show that the simultaneous usage of an optimum percentage of fiber and nano-silica particles will improve the mechanical properties of SCC. Moreover, the obtained results from the experimental data are used to train a multi-layer perceptron (MLP)type artificial neural network(ANN). The trained network is then used to predict the effect of various parameters on the desired output namely the flexural tensile strength, tensile strength behavior and compressive strength.

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“…This improvement is supposedly attributed to the difference in the thermal expansion capability between polypropylene fibers and cement pastes, which can introduce micro-fractures to release the vapor pressure [7,8]. An experimental research and analytical study by Olivito and Zuccarello [9] provided reinforced concrete with steel fiber with mixing pattern and different lengths of different fibers. They evaluated compressive and tensile strengths, fracture and ductility.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the effect of water to cement ratio on mechanical and durability properties of Nano-silica concretes with Polypropylene fibers

2017

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In the present paper, the effect of Nano silica on mechanical properties and durability of concrete containing polypropylene fibers has been investigated. Here, the length and length to diameter ratio of used polypropylene fibers were considered to be fixed and equal to 18 mm and 600 respectively and the cement content was 479 kg/m 3 . The effect of fibers and Nano silica in four different percentages for each one at 0.1, 0.2, 0.3 and 0.4 percent by volume for fibers and 3 percent for Nano silica in concrete with water to cement ratio of 0.33, 0.36, 0.4, 0.44 and 0.5 have been compared and evaluated. In total, more than 425 cubic and cylindrical specimens were made according to ASTM standards. Finally, samples of polypropylene fiber containing Nano-silica were tested under compressive loads, flexural strength, indirect tensile strength (Brazilian test), abrasion resistance, permeability and porosity and their mechanical properties were evaluated. The test results showed a significant increase in mechanical properties improvement and durability of concrete. Compressive strength, tensile strength, flexural strength and abrasion resistance (of concrete) increased up to 55%, 25%, 49%, and 45% respectively. Also, considerable reduction of hydraulic conductivity coefficient to 50% indicates high durability of these types of concrete.

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An experimental study on the tensile strength of steel fiber reinforced concrete

Cited by 306 publications

References 6 publications

A Model for the Prediction of the Tensile Strength of Fiber-Reinforced Concrete Members, Before and After Cracking

A Model for the Prediction of the Tensile Strength of Fiber-Reinforced Concrete Members, Before and After Cracking

Prediction of combined effects of fibers and nanosilica on the mechanical properties of self-compacting concrete using artificial neural network

Experimental study of the effect of water to cement ratio on mechanical and durability properties of Nano-silica concretes with Polypropylene fibers

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