External Seismic Retrofitting Using Reduced-Shrinkage High-Flow Concrete
By H. Takeuchi, S. Tokita and T. Sakamoto
Concrete Journal, Vol.53, No.3, Mar. 2015
- Synopsis
- The traditional external seismic retrofitting method consists in integrating indirect joints consisting of reinforcing steel frames fitted with studs and post-construction anchors by filling them with high-flow grout material. However, in the case of indirect joints with a large section, use of grout material is problematic because of the high likelihood of insufficient performance in terms of junction strength and seismic behavior, as well as high cost. This paper introduces the application of reduced-shrinkage high-flow concrete to indirect joints in actual external seismic retrofitting projects.
- Keywords:
- external seismic retrofitting, indirect joint, reduced shrinkage, high-flow concrete, grout material
