| 摘要 |
PROBLEM TO BE SOLVED: To provide a coating material for a tendon for PC , which can be effectively tensioned not only when being applied to a large-sized concrete structure but also after the curing of concrete, and which is excellent in storage stability. SOLUTION: This coating material includes a urethane prepolymer, aldimine and calcium oxide, and the curing time of the coating material is adjusted so that tension can be exerted by means of the tendon for the PC from thirty days after the placement of the concrete. Preferably, the ratio of the mixing of the aldimine and the urethane prepolymer is expressed by the equation: NH/NCO=0.8-1.2, and the calcium oxide is contained in the coating material at a weight ratio of 3-30%. COPYRIGHT: (C)2004,JPO
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