Evaluation of the role of transverse reinforcement in confining tension lap splices in high strength concrete

摘要

Reports on the very brittle and splitting mode of fail- ure of tension lap splices anchored in high strength con- crete (HSC) specimens and the lower normalized bond stress (u/f'_c) for high strength than for normal strength concrete, instigated several research projects aiming at rec- ommending mechanisms to provide confinement and ductility for bars or splices anchored in HSC. The state- of-the-art report of ACI Committee 363, ACI 363R-84, defines high strength concrete as concrete with compres- sive strength above 6,000 psi(41.4 MPa)