Strength Analysis of Ultra High-Performance Concrete

• Christeen Mikhaiel
• Mirit Girgis
• Ali Alzoubi

Ultra-High-Performance Concrete was first developed in the 1980’s. UHPC applications require a high strength, long-life time and corrosion resistance, it became commercially available in the United States in about 2000. Even though the concept of UHPC is relatively new, the use of it has increased for so many applications. For engineers, there are so many reasons why they should choose the UHPC over the conventional concrete. The most important reason is that UHPC has approximately seven times higher compressive strength compared to conventional concrete. Moreover, UHPC does not develop critical cracks, which makes it suitable for applications such as slab connections in bridge joints, seismic columns and rehabilitation purposes for heavy structures. The goal of this project is to achieve UHPC mix design that can be workable and has a very high strength. In this project, multiple mix designs were done in order to achieve an Ultra-High-Performance Concrete (UHPC). The samples have been tested for compressive, tensile and flexural strength. Also, different mix proportions were made to study the effect of different proportion on Ultra-High-Performance Concrete (UHPC) The materials that will be used for the mix are cement, fine aggregate, silica fume, ground silica, fly ash, high range water reducer “superplasticizer” and steel fibers. The paper includes comparison of the results of the project mix design with conventional mix designs.