scholarly journals Constructive properties of concrete being finely reinforced with polypropylene fibers

2018 ◽  
Vol 212 ◽  
pp. 01007 ◽  
Author(s):  
Inna Korneyeva
Keyword(s):  
Experimental Data ◽  
Reinforced Concrete ◽  
Crack Resistance ◽  
Fiber Reinforced Concrete ◽  
Polypropylene Fibers ◽  
Fiber Reinforced ◽  
The Matrix ◽  
Maximum Crack ◽  
Different Levels

The paper presents results of the statistical generalization of experimental data on the strength and deformability of fiber-reinforced concrete with different levels of bulk dispersion reinforcement. The range of the optimal content of reinforcing elements is established according to the criteria for ensuring maximum crack resistance and strength of the matrix (concrete).

scholarly journals Modelling the behavior of fiber-reinforced concrete with low-modulus fibers under load

2020 ◽  
Vol 329 ◽  
pp. 04002
Author(s):  
Yury V. Pukharenko ◽  
Dmitrii A. Panteleev ◽  
Mikhail I. Zhavoronkov ◽  
Maxim P. Kostrikin ◽  
Said Mujtaba Eshanzada
Keyword(s):  
Reinforced Concrete ◽  
Polypropylene Fiber ◽  
Theoretical Models ◽  
Fiber Reinforced Concrete ◽  
Polypropylene Fibers ◽  
Mechanical Modeling ◽  
Fiber Reinforced ◽  
The Matrix ◽  
Low Modulus

In this work was carried out a study the purpose of which was the development of physical and mechanical modeling of the processes of deformation and destruction of fiber-reinforced concrete. The process of deformation and the mechanism of destruction of fiber-reinforced concrete reinforced with low-modulus polypropylene fibers have been investigated. The method has been improved and the characteristic of adhesion of polypropylene fiber to the matrix has been determined. Theoretical models for forecasting the behavior of fiber-reinforced concrete reinforced with polypropylene fiber under load have been developed.

Strain Rate Effects on Tensile Properties of Fiber Reinforced Concrete

1985 ◽  
Vol 64 ◽  
Author(s):  
George G. Nammur ◽  
Antoine E. Naaman
Keyword(s):  
Reinforced Concrete ◽  
Strain Rate ◽  
Volume Fraction ◽  
Tensile Tests ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Strain Rate Effects ◽  
Rate Effects ◽  
The Matrix

ABSTRACTHigh strain rates lead to substantial modifications in the stress-strain (or stress-displacement) response of fiber reinforced concrete in tension. These modifications include higher strength and corresponding strain, as well as smaller displacement at failure.The purpose of this paper is to investigate the behavior of fiber reinforced concrete under impact tensile loading, and to study the effect of strain rate on the post-cracking strength of the composite. The variation of the tensile strength of the matrix with the reinforcement parameters such as volume fraction Vf and aspect ratio |/φ of the fibers is also studied ip this paper. A special emphasis is placed on the stress-displacement relationship of steel fiber reinforced concrete in its post-cracking range. An empirical model of the stress- displacement relationship as a function of the strain rate is developed from experimental data from tensile tests on dogbone shape notched tensile prisms. The model highlights the effects of strain rate and fiber properties on the post-cracking strength of the composite, as well as the displacement at failure. The effect of strain rate on the post-cracking toughness of fiber reinforced concrete is also addressed. The literature on impact effects on concrete in tension (plain and fiber reinforced) is briefly reviewed in this paper, and so is the state of the art of testing techniques for strain rate effects.

scholarly journals Experimental Research on Deep Beam using Hybrid Fiber Reinforced Concrete with M-Sand

2020 ◽  
Vol 9 (9) ◽  
pp. 305-308
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
Research Work ◽  
Fiber Reinforced Concrete ◽  
Polypropylene Fibers ◽  
Deep Beam ◽  
Fiber Reinforced ◽  
Fresh Properties ◽  
Hybrid Fiber ◽  
Different Types

Concrete is hard but liable to break easily. Hybrid fiber reinforced concrete offers several economical and technical benefits. The use of fibers extends its possibilities. The hybridization of different types of fibers may play important roles in arresting cracks and thus achieve high performance of concrete. The main reason for adding glass ,steel and polypropylene to improve the ductility of concrete.The present research work is aimed at studying, the deep beam using three different types of fibers such as glass 0.3%, steel 0.75% & 1% and polypropylene fibers 0.3% were added to volume of concrete. The mix design has been arrived based on IS code method for M20 grade of concrete. An investigation is carried out to evaluate the fresh Properties and mechanical Properties of Hybrid Fiber Reinforced Concrete (HFRC). The result shows that hybrid fiber reinforced deep beams achieved better performance than the ordinary RC deep beam under application of load.

scholarly journals The change in impermeability of steel fiber reinforced concrete with high strength cement-sand matrix at heating

2020 ◽  
Vol 17 (1) ◽  
pp. 150-155
Author(s):  
V. A. Dorf ◽  
◽  
R. O. Krasnovskij ◽  
D. E. Kapustin ◽  
P. S. Sultygova ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Steel Fiber ◽  
Heating Temperature ◽  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Fiber Concrete ◽  
The Matrix ◽  
Steel Fiber Concrete

The paper considers the effects of high temperatures in case of fire on the change in impermeability of steel fiber reinforced concrete having a high-strength cement-sand matrix and various content of fiber of different types, sizes, and strength. It is shown that in the temperature range from 20° to 1100° C in the diagram “Heating temperature - impermeability class», the matrix and steel fiber concrete(SFC) have a S-shaped character, and in case of heating temperature of over 100 °C, there comes a distinct decrease in impermeability.

scholarly journals Tension Stiffening Behavior of Polypropylene Fiber- Reinforced Concrete Tension Members

2021 ◽  
Vol 53 (2) ◽  
pp. 210209
Author(s):  
Aris Aryanto ◽  
Berto Juergen Winata
Keyword(s):  
Reinforced Concrete ◽  
Polypropylene Fiber ◽  
Fiber Reinforced Concrete ◽  
Polypropylene Fibers ◽  
Fiber Reinforced ◽  
Tension Stiffening ◽  
Cracking Behavior ◽  
Tension Members ◽  
Polypropylene Fiber Reinforced Concrete ◽  
Fiber Addition

This paper focuses on comparing the behavior of RC tension members with and without the addition of polypropylene fibers at various corrosion levels. Eight cylindrical tensile specimens were tested to evaluate their tension-stiffening and cracking behavior. The content of polypropylene fiber added into the concrete mix was the main variable (0.25%, 0.50%, 0.75%, and 1.0% of total volume). The corrosion level was varied from slight (5%), medium (10%) to severe (30%) and, like the other variables, applied only to 1.0% polypropylene fiber-reinforced concrete (PFRC) specimens. The test results showed that the fiber addition significantly increased the tension-stiffening effect but was largely unable to reduce the effect of bond degradation caused by corrosion. Moreover, the addition of polypropylene fibers was able to improve the cracking behavior in terms of crack propagation, as shown by smaller crack spacing compared to the specimen without fiber addition at the same corrosion level.

scholarly journals Performance of Hybrid Steel Fibers Reinforced Concrete Subjected to Air Blast Loading

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Mohammed Alias Yusof ◽  
Norazman Mohamad Nor ◽  
Ariffin Ismail ◽  
Ng Choy Peng ◽  
Risby Mohd Sohaimi ◽  
...  
Keyword(s):  
Experimental Data ◽  
Reinforced Concrete ◽  
Steel Fiber ◽  
Volume Fraction ◽  
Blast Loading ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Air Blast ◽  
Air Blast Loading

This paper presents the results of the experimental data and simulation on the performance of hybrid steel fiber reinforced concrete (HSFRC) and also normal reinforced concrete (NRC) subjected to air blast loading. HSFRC concrete mix consists of a combination of 70% long steel hook end fibre and also 30% of short steel hook end fibre with a volume fraction of 1.5% mix. A total of six concrete panels were subjected to air blast using plastic explosive (PE4) weighing 1 kg each at standoff distance of 0.3 meter. The parameters measured are mode of failure under static and blast loading and also peak overpressure that resulted from detonation using high speed data acquisition system. In addition to this simulation work using AUTODYN was carried out and validated using experimental data. The experimental results indicate that hybrid steel fiber reinforced concrete panel (HSFRC) possesses excellent resistance to air blast loading as compared to normal reinforced concrete (NRC) panel. The simulation results were also found to be close with experimental data. Therefore the results have been validated using experimental data.

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