Performance of Steel Fiber Concrete as Rigid Pavement

2013 ◽  
Vol 723 ◽  
pp. 452-458
Author(s):  
Eva Azhra Latifa ◽  
Robby Aguswari ◽  
Puspito Hadi Wardoyo
Keyword(s):  
Steel Fiber ◽  
Asphalt Pavement ◽  
Steel Fibers ◽  
Hardened Concrete ◽  
Trial And Error ◽  
Rigid Pavement ◽  
Rigid Pavements ◽  
Vehicle Load ◽  
Fiber Concrete ◽  
Steel Fiber Concrete

The concrete as surface pavement is more durable than asphalt pavement, while requiring less maintenance and having longer life. This paper discusses about the benefits of rigid pavements utilizing steel fiber upon receiving vehicle load. The study aims to improve the performance of concrete used as rigid pavement with 0.5 water/cement ratio by adding hook-shaped steel fibers. In this study, the amount of steel fiber varied, ranging from 0 to 15% based on trial and error. The hook-shaped fibers used were manufactured from steel in factory. Performance of samples were conducted in laboratory on fresh and hardened concrete behavior, including flexural strength and flexural toughness. Results showed that all of the assessed concrete performance increased as fiber was added, and the greatest value was obtained with nine percent of fibers.

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 Experimental and theoretical studies of biaxially prestressed steel-fiber-concrete slabs.

2018 ◽  
Vol 2 (3) ◽  
pp. 10-14
Author(s):  
Oleksandr Zhuravskyi ◽  
Andriy Gorobetc
Keyword(s):  
Steel Fiber ◽  
Physical Nonlinearity ◽  
Concrete Slabs ◽  
Theoretical Studies ◽  
Transverse Loading ◽  
Software Complex ◽  
Fiber Concrete ◽  
Steel Fiber Concrete ◽  
Experimental And Theoretical Studies

The article presents the results of experimental and theoretical studies of strength and deformability of steel-fiber concrete double-sided pre-stress slabs under the action of transverse loading. The simulation of such plates in the software complex LIRA-SAPR was performed taking into account the physical nonlinearity of materials.

scholarly journals Numerical simulation and experiment on steel fiber concrete beams

2019 ◽  
Vol 1425 ◽  
pp. 012007 ◽  
Author(s):  
Thanh Quang Khai Lam ◽  
Dung Do Thi My ◽  
Van Thuc Ngo ◽  
Trong Chuc Nguyen ◽  
Trong Phuoc Huynh
Keyword(s):  
Numerical Simulation ◽  
Steel Fiber ◽  
Concrete Beams ◽  
Fiber Concrete ◽  
Steel Fiber Concrete ◽  
Simulation And Experiment

scholarly journals Influence of steam curing on properties of fiber-reinforced concrete during hardening

2018 ◽  
Vol 251 ◽  
pp. 01031
Author(s):  
Vadim Soloviev ◽  
Marsel Nurtdinov ◽  
Sergey Belikov ◽  
Evgeniy Matyushin
Keyword(s):  
Steel Fiber ◽  
Mechanical Performance ◽  
Thermal Capacity ◽  
Fiber Reinforced Concrete ◽  
Steam Curing ◽  
Curing Conditions ◽  
Production Stage ◽  
Concrete Production ◽  
Fiber Concrete ◽  
Steel Fiber Concrete

To increase the efficiency of steel-fiber concrete production, the existing technological operations that could reduce the costs should be optimized. This process requires scientific research and analysis of the existing results to improve the efficiency of each production stage. One of the important stages in the steel-fiber concrete production is steam curing, which is responsible for forming the cementitious matrix structure. To increase the efficiency of this production stage, a study was conducted to develop the steam curing conditions according to the rules of steel-fiber concrete structure formation and the methods of improving durability indicators. Tests on several steel-fiber concrete compositions were conducted, and the relations between its thermal conductivity and the reinforcement coefficient of concrete were revealed. The results of the tests let us conclude that with the increase of the reinforcement coefficient its thermal capacity decreases. The temperature gradient charts along the cross-section of samples with different cement/sand ratios and reinforcement coefficients were built. According to the data obtained, the optimal industrial conditions of steam curing were discovered. The dependences determining the increase of mechanical performance of steel-fiber concrete due to the formation of prestressed fiber structure in the material were revealed.

scholarly journals Developing Geopolymer Concrete Properties by Using Nanomaterials and Steel Fibers

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
E. Rabiaa ◽  
R. A. S. Mohamed ◽  
W. H. Sofi ◽  
Taher A. Tawfik
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Sodium Hydroxide ◽  
Steel Fiber ◽  
Splitting Tensile Strength ◽  
Steel Fibers ◽  
Hardened Concrete ◽  
Geopolymer Concrete ◽  
Alkaline Activator ◽  
The Impact

This research investigates the simultaneous impact of two different types of steel fibers, nanometakaolin, and nanosilica on the mechanical properties of geopolymer concrete (GPC) mixes. To achieve this aim, different geopolymer concrete mixes were prepared. Firstly, with and without nanomaterials (nanosilica and nanometakaolin) of 0, 2%, 4%, 6%, and 8% from ground granulated blast furnace slag (GGBFS) were used. Secondly, steel fiber (hooked end and crimped) content of (0, 0.5%, 1, and 1.5%) was used. Thirdly, optimum values of nanomaterials with the optimum values of steel fiber were used. Crimped and hooked-end steel fibers were utilized with an aspect ratio of 60 and a length of 30 mm. Geopolymer mixes were manufactured by using a constant percentage of alkaline activator to binder proportion equal to 0.45 with GGBFS cured at ambient conditions. For alkaline activator, sodium hydroxide molar (NaOH) and sodium hydroxide solution (NaOH) were used according to a proportion (Na2SiO3/NaOH) of 2.33. The hardened concrete tests were performed through the usage of splitting tensile strength, flexural, and compressive experiments to determine the impact of steel fibers, nanometakaolin, and nanosilica individually and combined on performance of GPC specimens. The results illustrated that using a mix composed of the optimum steel fibers (1% content) accompanied by an optimum percentage of 6% nanometakaolin or 4% nanosilica demonstrated a significant enhancement in the mechanical properties of GPC specimens compared to all other mixtures. Besides, the impact of using nanomaterials individually was found to be predominant on compressive strength on GPC specimens especially with the usage of the optimum values. However, using nanomaterials individually compared to using the steel fibers individually was found to have approximately the same splitting tensile strength and flexural performance.

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.

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