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.

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.

Experimental Study on Electrical Conductivity of Steel Fiber Concrete under Uniaxial Compression

2011 ◽  
Vol 94-96 ◽  
pp. 918-922
Author(s):  
Hua Wang ◽  
Hong Guang Ji ◽  
Hua Cheng
Keyword(s):  
Electrical Conductivity ◽  
Steel Fiber ◽  
Regression Equations ◽  
Support Material ◽  
Current Voltage ◽  
Fiber Concrete ◽  
Steel Fiber Concrete ◽  
Concrete Resistivity ◽  
The Stability ◽  
Underground Chamber

Concrete is a key support material of underground chamber, its stress state is important parameter that can characterize the stability of underground chambers. The changing rule of the electrical conductivity of C50 steel fiber concrete in relation to the changes of the current, voltage and pressure was studied experimentally. And resistivity-stress regression equations of the concrete was fitted with much high correlation coefficient. Research results show that: (1) within the framework of elastic deformation, the electrical conductivity of concrete increases with the strengthening pressure (i.e., the concrete resistivity decreases with increasing pressure); (2) there exists the good correlation between the resistivity and pressure of the concrete; (3) given the certain pressure, the conductivity of the concrete is to some extent unaffected by voltage and current.

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.

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
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