PROBLEM TO BE SOLVED: To provide a building having a PRC structure, which is not cured until a curable composition completes the tension of a tendon and is cured within a fixed period after that and can hold high corrosion protection.;SOLUTION: In the building having the PRC structure, prestress is introduced to reinforced concrete by the tendon. The tendon has a core material, the curable composition applied on the surface of the core material and a sheath covering the surface of the curable composition. The curable composition contains an epoxy resin and a moisture curable type hardener, a viscosity increase coefficient (k) at 90°C of the curable composition and curing required days M at the normal temperature satisfy relationship shown by the following formulas (1) and (2). 0.01≤k≤0.08...(1) M≤730...(2) [where (k) represents a value defined by the following formula (3). logρ=kT+logρ0...(3) ρ: viscosity(P), T: time(hrs), ρ0: initial viscosity (P)].;COPYRIGHT: (C)2003,JPO
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