Factors influencing the change of steel fiber reinforced effect
Steel fiber concrete and ordinary concrete in impervious performance did not change, because the steel fiber concrete crack resistance, good integrity, and freeze-thaw resistance, heat resistance,wear resistance, cavitation resistance and corrosion resistance were improved significantly. Whensteel fiber concrete damage, mostly the fibers are pulled out and not broken, thus to improve the bond strength between fiber and matrix is one of the main control factors of improving fiber reinforcing effect.
According to various kinds of theory and mechanism of fiber reinforced, such as the fiber spacing theory, theory of composite material and micro fracture theory, and analysis the data of test, can determine the fiber reinforcing effect mainly depends on the matrix strength, the fiber aspect ratio,fiber volume rate, the bond strength between fiber and matrix, affecting the distribution and orientation and the fiber in the matrix.
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