الفهرس 
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Abstract
the development of ultra-high strength (UHSC) started late in the end of the 20th century by modifying some of the existing rules for desiging concrete (HSC) types besides the obtained uktra-high compressive strength (up to 200 MPa) UHSC also have considerably improved tensile strength, stiffness and durability compared to other concrete types. Uktra-high strength concrete (UHSC) finds wide use in tall buildings, bridges, power plants etc.