Experimental Research on Tensile Strength of Specified Density Steel Fiber Concrete

2011 ◽  
Vol 368-373 ◽  
pp. 330-333
Author(s):  
Yan Kun Zhang ◽  
Xiao Hu Li ◽  
Pan Zhang
Keyword(s):  
Tensile Strength ◽  
Steel Fiber ◽  
Lightweight Aggregate ◽  
Splitting Tensile Strength ◽  
Fiber Volume ◽  
Axial Tensile ◽  
Fiber Concrete ◽  
Steel Fiber Concrete ◽  
Substitution Ratio ◽  
The Relationship

Based on the experiment, the splitting tensile strength and axial tensile strength of specified density steel fiber concrete are studied. The influence of type of steel fiber, volume content of the fiber and substitution ratio of lightweight aggregate is analyzed. The relationship between splitting tensile strength and axial tensile strength of specified density steel fiber concrete is suggested.

Experiment Research on Compressive Strength of Specified Density Steel Fiber Concrete

2011 ◽  
Vol 374-377 ◽  
pp. 1606-1609
Author(s):  
Pan Zhang ◽  
Yan Kun Zhang ◽  
Xiao Hu Li ◽  
Zhen Lei Guo
Keyword(s):  
Compressive Strength ◽  
Regression Analysis ◽  
Steel Fiber ◽  
Lightweight Aggregate ◽  
Test Results ◽  
Experiment Research ◽  
Fiber Volume ◽  
Fiber Concrete ◽  
Steel Fiber Concrete ◽  
Substitution Ratio

Based on the experimental research, the prism compressive strength and cubic compressive strength of specified density steel fiber concrete are studied. Through regression analysis, the influence of type of steel fiber, volume content of the fiber and substitution ratio of lightweight aggregate is studied. According to the test results, the formula of prism compressive strength and cubic compressive strength is given.

scholarly journals Behavior of high performance artificial lightweight aggregate concrete reinforced with hybrid fibers

2018 ◽  
Vol 162 ◽  
pp. 02001
Author(s):  
Wasan Khalil ◽  
Hisham Ahmed ◽  
Zainab Hussein
Keyword(s):  
Tensile Strength ◽  
Aspect Ratio ◽  
Steel Fiber ◽  
Fiber Type ◽  
Lightweight Aggregate ◽  
Plain Concrete ◽  
Splitting Tensile Strength ◽  
Lightweight Aggregate Concrete ◽  
Fiber Reinforced ◽  
Hybrid Fiber

In this investigation, sustainable High Performance Lightweight Aggregate Concrete (HPLWAC) containing artificial aggregate as coarse lightweight aggregate (LWA) and reinforced with mono fiber, double and triple hybrid fibers in different types and aspect ratios were produced. High performance artificial lightweight aggregate concrete mix with compressive strength of 47 MPa, oven dry density of 1828 kg/m3 at 28 days was prepared. The Fibers used included, macro hooked steel fiber with aspect ratio of 60 (type S1), macro crimped plastic fiber (P) with aspect ratio of 63, micro steel fiber with aspect ratio of 65 (type S), and micro polypropylene fiber (PP) with aspect ratio of 667. Four HPLWAC mixes were prepared including, one plain concrete mix (without fiber), one mono fiber reinforced concrete mixes (reinforced with plastic fiber with 0.75% volume fraction), one double hybrid fiber reinforced concrete mixes (0.5% plastic fiber + 0.25% steel fiber type S), and a mix with triple hybrid fiber (0.25% steel fiber type S1+ 0.25% polypropylene fiber + 0.25% steel fiber type S). Fresh (workability and fresh density) and hardened concrete properties (oven dry density, compressive strength, ultrasonic pulse velocity, splitting tensile strength, flexural strength, static modules of elasticity, thermal conductively, and water absorption) were studied. Generally, mono and hybrid (double and triple) fiber reinforced HPLWAC specimens give a significant increase in splitting tensile strength and flexural strength compared with plain HPLWAC specimens. The percentage increases in splitting tensile strength for specimens with mono plastic fiber are, 20.8%, 31.9%, 36.4% and 41%, while the percentage increases in flexure strength are 19.5%, 37%, 33.9% and 34.2% at 7, 28, 60, 90 days age respectively relative to the plain concrete. The maximum splitting tensile and flexure strengths were recorded for triple hybrid fiber reinforced HPLWAC specimens. The percentage increases in splitting tensile strength for triple hybrid fiber reinforced specimens are 19.5%, 37%, 33.9% and 34.2%, while the percentage increases in flexure strength are 50.5%, 62.4. %, 66.8% and 62.2% at 7, 28, 60 and 90 days age respectively relative to the plain concrete specimens.

Mechanical Properties of Fiber Reinforced Lightweight Aggregate Concrete

2011 ◽  
Vol 477 ◽  
pp. 274-279 ◽  
Author(s):  
Yi Xu ◽  
Lin Hua Jiang ◽  
Hong Qiang Chu ◽  
Lei Chen
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Water Hyacinth ◽  
Steel Fiber ◽  
Polypropylene Fiber ◽  
Lightweight Aggregate ◽  
Splitting Tensile Strength ◽  
Lightweight Aggregate Concrete ◽  
Fiber Types

In this study, the effects of fiber types on the mechanical properties of lightweight aggregate concretes were investigated. Three types of fibers, namely, polypropylene fiber, steel fiber and water hyacinth (Eichhornia crassipes) fiber, and two types of lightweight aggregates, namely, expanded polystyrene and ceramsite were used. The compressive strength and splitting tensile strength of concretes were tested. The results show that both the compressive strength and the splitting tensile strength were improved by adding a reasonable volume of steel fiber and polypropylene fiber into LWAC. The addition of water hyacinth fiber had little effect on the compressive strength of LWAC, while a little increase was observed in the splitting tensile strength.

Research of the Sprayed Steel Fiber Concrete Application in Tunnel Construction

2012 ◽  
Vol 424-425 ◽  
pp. 908-911
Author(s):  
Xian Long Luo ◽  
Li Zeng Li ◽  
Hui Zeng Yin
Keyword(s):  
Tensile Strength ◽  
Steel Fiber ◽  
Economic Effect ◽  
Tunnel Construction ◽  
Concrete Application ◽  
Resistance To Deformation ◽  
Fiber Concrete ◽  
Steel Fiber Concrete ◽  
Underground Chamber

The spayed concrete is blended with steel fiber,which can improve tensile strength and higher resistance to deformation. This method is applied to support underground chamber surrounded by weak wallrock or chamber bearing great load. this paper accounts for the theory of sprayed steel fiber concrete and its application in tunnelling construction.And aslo, its comprehensive economic effect will be emphasized in comparison with jetting concrete net from the aspects of technology,safety and economy.

scholarly journals Influence of MgO and Hybrid Fiber on the Bonding Strength between Reactive Powder Concrete and Old Concrete

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Mo Jinchuan ◽  
Ou Zhongwen ◽  
Wang Yahui
Keyword(s):  
Tensile Strength ◽  
Bonding Strength ◽  
Fiber Volume Fraction ◽  
Steel Fiber ◽  
Volume Fraction ◽  
Drying Shrinkage ◽  
Splitting Tensile Strength ◽  
Reactive Powder Concrete ◽  
Fiber Volume ◽  
Reactive Powder

The reactive powder concrete (RPC) was used as concrete repair material in this paper. The influence of steel fiber, steel fiber + MgO, and steel fiber + MgO + polypropylene fiber (PPF) on the mechanical properties of RPC repair materials and the splitting tensile strength between RPC and old concrete was studied. Influences of steel fiber, MgO, and PPF on the splitting tensile strength were further examined by using scanning electronic microscopy (SEM) and drying shrinkage test. Results indicated that the compressive and flexural strength was improved with the increasing of steel fiber volume fraction. However, the bonding strength showed a trend from rise to decline with the increasing of steel fiber volume fraction. Although MgO caused mechanical performance degradation of RPC, it improved bonding strength between RPC and existing concrete. The influence of PPF on the mechanical properties of RPC was not obvious, whereas it further improved bonding strength by significantly reducing the early age shrinkage of RPC. Finally, the relationship of drying shrinkage and splitting tensile strength was studied, and the equation between the splitting tensile strength relative index and logarithm of drying shrinkage was obtained by function fitting.

Performance Test of C60 Self-Compacting Steel Fiber Concrete

2021 ◽  
Vol 871 ◽  
pp. 330-339
Author(s):  
Fang Hua Li
Keyword(s):  
Tensile Strength ◽  
Performance Test ◽  
Steel Fiber ◽  
Test Results ◽  
Ordinary Concrete ◽  
Flexural Tensile Strength ◽  
Performance Indexes ◽  
Mix Proportion ◽  
Fiber Concrete ◽  
Steel Fiber Concrete

Self-compacting steel fiber concrete must meet the strength standard after steel fiber is added and must have good fluidity. The test results show that the addition of steel fiber to concrete will affect the fluidity of concrete. Compared with ordinary concrete, the addition of steel fiber will improve the compressive strength and flexural tensile strength of concrete to varying degrees. The mix proportion test can be carried out in stages, i.e. the mix proportion meeting all performance indexes used is determined first, then steel fiber is added and adjusted to determine the best mix proportion.

Cracking behavior and energy consumption of Steel Fiber Concrete Encased Steel beams

2021 ◽  
pp. 136943322110297
Author(s):  
Chao Xu ◽  
Kai Wu ◽  
Ping zhou Cao ◽  
Shi-qi Lin ◽  
Zhuo Chen
Keyword(s):  
Energy Consumption ◽  
Steel Fiber ◽  
Steel Reinforcement ◽  
Steel Fibers ◽  
Strengthening Effect ◽  
Fiber Volume ◽  
Volume Percentage ◽  
Cracking Behavior ◽  
Fiber Concrete ◽  
Steel Fiber Concrete

Steel Fiber Concrete Encased Steel (SFCES) beams were subjected to bending to investigate the effect of steel fibers on the behavior of Steel Reinforced Concrete beams with or without steel reinforcement. 18 SFCES beams reinforced with steel fibers, steel reinforcement, or both were cast. The parameters considered in the experiment were (a) the volume percentage of steel fiber (0%, 1%, and 2%), (b) the shear span to depth ratio( s/d = 2.5 and 3.5), (c) the stirrups spacing (180 mm and 360 mm), and (d) the presence or absence of longitudinal reinforcement (2Φ8+2Φ10).The cracking load, crack development, energy dissipation capacity, and ductility of the specimens were investigated. The results illustrate that the cracking load F c, the total energy consumption, and the energy ductility increase with increasing steel fiber volume, and the average improvement with a steel fiber volume increase of 1% can reach 36.5%, 21.2%, and 28.67%, respectively. However, this strengthening effect of steel fibers was weakened due to the addition of steel reinforcement. The influence of the steel fiber volume and reinforcement configuration on each stage of energy consumption was mainly concentrated in the elastic ( E 1) and failure stages ( E 3). Finally, mathematical equations were proposed to predict the cracking load and crack width of the SFCES specimens, which were verified by comparing the predictions with the experiment results.

scholarly journals Fresh and some mechanical properties of sifcon containing silica fume

2018 ◽  
Vol 162 ◽  
pp. 02003 ◽  
Author(s):  
Shakir Salih ◽  
Qais Frayyeh ◽  
Manolia Ali
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Silica Fume ◽  
Steel Fiber ◽  
Construction Material ◽  
Fiber Content ◽  
Splitting Tensile Strength ◽  
Partial Replacement ◽  
Cement Slurry ◽  
Fiber Concrete

Slurry infiltrated fiber concrete (SIFCON) is one of the recently developed construction material. SIFCON could be considered as a special type of fiber concrete with high fiber content. The matrix of SIFCON consists of flowing cement mortar or cement slurry. SIFCON has a very good potential for application in area where resistance to impact and high ductility are needed especially in designing the seismic retrofit, in the structures under impact and explosive effects and repair of structural reinforced concrete element. The main objective of this paper is to determine the effect of steel fiber content and silica fume (SF) cement replacement on the mechanical properties of SIFCON concrete. The percentage of SF replacement was 10% by weight of cement in SIFCON slurry, and three different volume fractions of hooked ended steel fiber (6, 8.5, and 11) % were used. The tested properties of SIFCON were compressive strength and splitting tensile strength which were carried out on standard size of cubes and cylinders respectively at the age of 7and 28 days. It was observed that the mechanical properties of SIFCON were affected in a positive manner by using silica fume as a partial replacement of cement and by adding steel fiber reinforcement in different percentages. The compressive and splitting tensile strength up to 83.7 MPa and 17.3MPa, respectively were obtained at the age of 28 days.

scholarly journals EFFECT OF USING SLURRY INFILTRATED FIBER CONCRETE ON THE BEHAVIOR OF REINFORCED CONCRETE CORBELS

2021 ◽  
Vol 25 (Special) ◽  
pp. 4-69-4-77
Author(s):  
Hajer K. Alqaraghouly ◽  
◽  
Nibras N. Abdul-Hameed ◽  
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Reinforced Concrete ◽  
Failure Mode ◽  
Modulus Of Elasticity ◽  
Steel Fiber ◽  
Modulus Of Rupture ◽  
Vertical Load ◽  
Fiber Volume ◽  
Fiber Concrete

This paper experimentally presents the behavior and strength of slurry infiltrated fiber concrete (SIFCON) corbels. The program included 3 specimens in which steel fiber volume fractions were varied (6,8, and 10) %. All specimens had a constant shear span to depth ratio (a/d=0.7) and were of the same width, length, and thickness. The corbel specimens were examined under the effect of concentrated vertical load only. It was found that the compressive strength, splitting tensile strength, modulus of rupture, modulus of elasticity, and failure mode were improved with the increase in steel fiber content for all SIFCON corbels.

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