Strength of Lapped Splices in High-Strength Concrete


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Title: Strength of Lapped Splices in High-Strength Concrete

Author(s): N. H. Olsen

Publication: Special Publication

Volume: 121


Appears on pages(s): 179-194

Keywords: compressive strength; cracking (fracturing); energy; splicing; high-strength concretes; lap connections; regression analysis; reinforced concrete; reinforcing steels; research; splitting tensile strength; Structural Research

Date: 11/1/1990

A total of 21 test specimens with lapped reinforcing bar splices were tested using concretes with compressive strengths in the range of 21 to 99 MPa. For each test specimen, the concrete compressive strength, splitting strength, fracture energy Gf was determined. It was found that fracture energy of concrete appears to have a strong influence on the strength of lapped tensile splices. A comparison of the experimental results and computed values using the regression analysis equation of Orangun et al. based on a large number of tests from USA showed that the equation may be unconservative in cases of lapped splices in high-strength concrete.