Abstract
AbstractThe effect of mixture composition and coarse aggregate density on the shear strength and cracking behavior of self-consolidating concrete (SCC) beams are presented in this study. The experimental test parameters included coarse/fine (C/F) aggregate ratio (ranging from 0.7 to 1.2), coarse aggregate size (10 and 20 mm), coarse aggregate type/density (slag, expanded slate, and crushed stone), and varying compressive strengths (26–72 MPa). The density of the tested mixtures varied from 1,848 to 2,286 kg/m3. The study investigates the fresh properties of all tested mixtures and the shear strength and cracking behavior of 16 full-scale concrete beams. Based on some selected design codes, the ultimate shear strength of the tested beams is also predicted. The results showed that SCC mixtures with a higher C/F ratio or bigger normal-weight aggregate had better flowability and less high range water reducer admixtures (HRWRA) demand. Although all tested beams showed comparable normalized shear strength, bea...
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