• Nihar Dabhi
• Prof. M. G. Vanza
• Dr. Major C. S. Shangvi

Use of Ultra High Strength Concrete in structures such as nuclear power plant, high rise buildings, Bridges which are generally subjected to higher dead load and live loads is increasing due to its superior mechanical properties such as compressive strength and tensile strength over the conventional concrete. In addition to mineral admixture and super plasticizers use of steel fiber is increasing mainly due to its effect on tensile strength of concrete and improvement in ductility. This study is concerned with developing optimum mix design of Ultra High Strength Concrete of grade 90MPa, 100MPa and 110MPa. Three variation of Ultra high strength are prepared :(і) UHSC with maximum aggregate size of 10mm (іі) UHSC with maximum aggregate size of 20 mm (ііі) UHSC with maximum aggregate size of 20mm with addition of 1% and 2% of steel fiber. The effect of varying % of steel fiber and maximum size of aggregate on different grade of concrete is studied and their mechanical properties such as compressive strength, Split cylinder tensile test are analyzed.

Ultra High Strength Concrete, steel fiber, super plasticizers.

"Study on various ultra-high strength concrete with steel fiber ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 5, page no.c960-c963, May-2021, Available :http://www.jetir.org/papers/JETIR2105376.pdf

"Study on various ultra-high strength concrete with steel fiber ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 5, page no. ppc960-c963, May-2021, Available at : http://www.jetir.org/papers/JETIR2105376.pdf