Prototype of PC Bridge for Sustainable Development
By H. Shinozaki, W. Sasaki, T. Sanga and T. Matsuda
Concrete Journal, Vol.59, No.6, Jun. 2021
- Synopsis
- With a view to reducing CO2 emissions and improving maintainability, a long-life PC bridge with low environmental impact has been developed by combining high-strength, low-shrinkage concrete that does not use cement (hereinafter referred to as “Sustaincrete”) and rust-proof aramid FRP rods. The Sustaincrete developed ultra-high strength of 150 MPa at 6 days of age by accelerated curing with steam, and loading tests performed on test beams showed that flexural behavior and shear strength can be evaluated by the same methods as those employed for ordinary high-strength fiber reinforced concrete. This paper reports on a series of studies covering the development and in-plant manufacture of Sustaincrete reinforced with short fibers, the installation and structural verification of pretensioned girders, and monitoring.
- Keywords:
- Sustainability, PC bridge, High-strength concrete, Ultra-low shrinkage, Aramid FRP rod
