The Study of Characteristics of High-Performance Cement Base Material Reinforced with Dramix Steel Fiber

Document Type : Research Article


1 Department of Civil Engineering, Arak Branch, Islamic Azad University, Arak, Iran

2 Department of, civil Engineering Arak Branch, Islamic Azad University, Arak, Iran.

3 Assistant Prof, Department of Mechanical engineering, Arak Branch, Islamic Azad University, Arak, Iran.


Concrete can resist high tension stress. The low tensile strength and high fragility have made it unconsidered in designing Code. Using steel fiber in the concrete matrix decreases the fragility and brittleness of the material. Improvement of mechanical characteristics will cause the steel fiber reinforced with concrete matrix to be an efficient material for construction. In this paper, the mechanical properties of cement-based composites reinforced with various percentages of fiber (1 wt% and 2 wt%) have been studied. The matrix of cement-based, with DRAMIX fiber, in three types of 3D, 4D, and 5D, had compressive strength up to 64 MPa. In this study, to evaluate flexural strength, 4-point bending test was done on the reinforced flexural elements with various percentages of steel fiber. Flexural properties, including load-displacement graph, crack line, energy absorption, and bending tension stress have been evaluated and compared. The results show that in some specimens, strain-hardening behavior until before concentrating of cracks and failure and after strain-softening happens. Strain-hardening behavior improves the mechanical properties of the materials. In this case, failure occurred at various critical matrix cracks.


Main Subjects

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