Effect of concrete workability on bond properties of steel rebar in pre-cracked concrete

Although research has shown a considerable influence of the pre-cracking phenomenon on steel-congested concrete members, only normal (NC) been considered in literature. The intention this paper is thus to study effect bond response pre-cracked NC with different slump flow values and self-consolidating (SCC). Initial crack widths ranging from 0.0 0.5 mm are studied. Results show that initial larger than 0.10 have significant properties, such reduction factors greater 30% 50% obtained for maximum strength specimens exposed 0.2 0.4 mm, respectively. mixtures higher workability less sensitive as compared mixtures. average stress steel rebar SCC found be similar 200 which considerably better 97 mm. Moreover, results 65.8, 80.6, 88.5 93.1% fracture energy reductions 0.20, 0.30, 0.40 0.50 respectively, small width 0.15