Ultra-High-Performance Concrete Using Local Materials And Production Methods

Abstract

The modern architectural designs and building techniques in the constriction field need new materials. Those materials have high compressive strength, such as an Ultra-High-Performance Concrete, which abbreviates by UHPC. The UHPC is suitable to use for high-rise buildings and long-span bridges. Therefore, this study investigated the ability to produce UHPCs depends on available materials and the optimum proportion of these materials. Also, the increment of the steel fiber is needed to study its effects on the mechanical properties of the UHPC. Therefore, four Fraction Volume of steel fiber content has been adopted, which were 0%, 1.5%, 3.0%, and 4.5%. The results showed the ability to produce UHPC with a compressive strength reaches to 150 MPa, by using affordable materials. However, the increase of the steel fiber content would be improved the compressive strength of about 40% for the steel fiber content of 4.5% as well as the rupture stress increased to 160% for the same fraction. The results revealed that the reduction of the compressive strength reaches to 0.69 when used small molds.