ABSTRACT

In this study, the fundamental properties of steel fibre reinforced concrete (SFRC) using new—type of steel fibre having a flat and convex cross section were investigated and compared with those of SFRC using old-type of steel fibre. These properties evaluated include consistency, flexural strength, tensile strength, compressive strength, inpact resistance and durability in sea-water. In addition, the dispersion end orientation factors were discussed using X-ray analysis. The results of these investigations show that flexural strength, tensile strength, impact resistance and sea-water resistance of SFRC using new-type steel fibre are higher than those of SFRC using oid-type fibre The dispersion and orientation factors are better for the new-type of fibre, although the concrete gives from 2 to 3 cm lower slump than SFRC using old-type steel fibre.