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Cyclic Loading Test for Precast Columns Using Slag-Based Concrete and Sleeve Splices
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Cyclic Loading Test for Precast Columns Using Slag-Based Concrete and Sleeve Splices
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Journal Article
Cyclic Loading Test for Precast Columns Using Slag-Based Concrete and Sleeve Splices
2025
Overview
Slag-based zero-cement concrete (ZC) of high strength (60 MPa [8.70 ksi]) was developed as an eco-friendly construction material. In the present study, to investigate the structural behavior of precast columns using ZC, cyclic loading tests were performed for five column specimens with reinforcement details of ordinary moment frames. Longitudinal reinforcement was connected by sleeve splices at the precast column-footing joint. The test parameters included the concrete type (portland cement-based normal concrete [NC] versus ZC), construction method (monolithic versus precast), longitudinal reinforcement ratio, and sleeve size. The test results showed that the structural performance (failure mode, strength, stiffness, energy dissipation, and deformation capacity) of the precast ZC columns was comparable to that of the monolithic NC and precast NC columns, and the tested strengths agreed with the nominal strengths calculated by ACI 318-19. These results indicate that current design codes for cementitious materials and sleeve splice of longitudinal reinforcement are applicable to the design of precast ZC columns. Keywords: column; cyclic loading test; precast concrete; seismic performance; slag-based concrete; sleeve splice; zero-cement concrete.
