Title:
Cyclic Loading Test for Interior Precast Beam-Column Joints Using Slag-Based Concrete
Author(s):
H.-S. Moon, H.-J. Hwang, C.-S. Kim, K.-W. Jo, J.-H. Jeong, C.-K. Park, and H.-G. Park
Publication:
Structural Journal
Volume:
122
Issue:
1
Appears on pages(s):
117-128
Keywords:
beam-column joint; cyclic loading test; hook anchorage; precast concrete; seismic performance; slag-based concrete; zero-cement concrete (ZC)
DOI:
10.14359/51742139
Date:
1/1/2025
Abstract:
To reduce CO2 emissions of concrete, a slag-based zero-cement
concrete (ZC) of high strength (60 MPa [8.70 ksi]) was developed.
In the present study, cyclic loading tests were conducted to investigate the seismic performance of full-scale interior precast beamcolumn joints using the new ZC. One monolithic portland cementbased normal concrete (NC) beam-column joint and two precast ZC beam-column joints were tested. The test parameters included concrete type, fabrication method, and beam bottom bar anchorage detail. The structural performance was evaluated, including the strength, deformation capacity, damage mode, and energy dissipation. The test results showed that the structural performance of the precast ZC beam-column joints could be equivalent, or superior, to that of the monolithic NC beam-column joint. Although the reinforcement details of the ZC joints do not satisfy the seismic design requirements of special moment frames in ACI 318-19, the seismic performance of the ZC joints satisfied the requirements of ACI 374.1-05 and AIJ 2002 Guidelines.