PC Curtain Wall Using Steel Fiber Concrete: Improvement and Application of Exterior SFRC Plates
By S. Morita, D. Honma, G. Horiuchi, S. Fujita and T. Nishimura
Concrete Journal, Vol.61, No.4, Apr. 2023
- Synopsis
- To reduce the weight of the exterior PC plates, a thin exterior SFRC plate was developed. Until now, exterior SFRC plates have had issues in terms of economic efficiency and fire resistance. In this development study, the concrete mixture design was optimized to ensure the same performance as conventional concrete with a smaller amount of fiber for higher economic efficiency. Structural performance as an exterior curtain wall construction method was confirmed for the mixture design, and the fire resistance performance of exterior walls using this method was verified. For the rationalization of the fire resistant covering of adjacent steel structural members, we developed also a synthetic fire-resistant covering method that integrates exterior SFRC plates, and we obtained ministerial certification for its application to fire-resistant structures. The results obtained were applied to an actual building.
- Keywords:
- PC curtain wall, Fiber reinforced concrete, Mixture design optimization, Structural performance of members, Fire resistance performance of outer walls, Synthetic fire-resistant covering
