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一、概述强度为68～124MPa(相当于700～1265kg/cm~2)的混凝土称之为超高强混凝土。以抗压强度为600～800kg/cm~2的混凝土取代强度为300～400kg/cm~2混凝土生产钢筋混凝土构件,可以大大减少混凝土及钢筋的用量。如承载能力为850kg/cm~2的18m的格构式桁架,如用350kg/cm~2的混凝土制作需要3.11m~3,而用强度为600kg/cm~2的混凝土制作只需要1.8m~3,节约40％。高层框架的钢筋混凝土底层柱配筋率高达6％,如以600kg/cm~2的混凝土代
First, an overview of the strength of 68 ~ 124MPa (equivalent to 700 ~ 1265kg/cm ~ 2) of concrete called ultra-high strength concrete. The use of concrete with a compressive strength of 600-800 kg/cm 2 instead of concrete with a strength of 300-400 kg/cm 2 produces reinforced concrete members, which can greatly reduce the amount of concrete and steel reinforcement. For example, a 18m lattice truss with a load capacity of 850kg/cm~2 requires 3.11m~3 for concrete made of 350kg/cm~2 concrete, and 1.8m~ for concrete with a strength of 600kg/cm~2. 3, save 40%. High-rise frame reinforced concrete bottom column reinforcement ratio up to 6%, such as 600kg/cm~2 concrete generation