@article {15209,
	title = {Rational Use of High-Strength Concrete in Flat Slab- Column Connections under Seismic Loading},
	volume = {117},
	year = {2020},
	note = {<p>n/a</p>
},
	abstract = {<p>High-strength concrete (HSC) slab-column connections with relatively low concrete strengths compared to today{\textquoteright}s capabilities have been tested under seismic-type loading in the past. Herein, the hybrid use of HSC with compressive strength approximately 120 MPa and normal-strength concrete (NSC) is investigated through three reversed horizontal cyclic-loading tests with different geometries of the HSC region and a reference NSC specimen. The results show that HSC applied in the vicinity of the column can significantly enhance the seismic performance of slab-column connections. The best result in terms of drift capacity and economic use of HSC was achieved in the case of full-depth HSC extended from the column{\textquoteright}s face up to 2.5 times the effective depth. Drift ratios up to 3.0\% were achieved. A comparison with previous tests showed that the hybrid use of HSC and NSC can achieve similar results to the provision of punching shear reinforcement.</p>
},
	keywords = {cyclic loading; flat plate; flat slab; high-strength concrete; hybrid; punching; seismic loading; slab-column connection},
	author = {Micael In{\'a}cio, Brisid Isufi, Massimo Lapi, and Ant{\'o}nio Pinho Ramos}
}
