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IJSTR >> Volume 9 - Issue 9, September 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Experimental Investigation Of The Mechanical Behavior Of Grouted Splice Sleeve Connectors With Mechanical Interlocking Ring Under Axial Tensile Load

[Full Text]

 

AUTHOR(S)

Hatem H. Ibrahim, Abdallh M. Soliman, Belal Ali, Hossam A. Hodhod

 

KEYWORDS

Precast concrete connection; Grouted splice; Mechanical Splice; Confinement; Bond Strength; bar embedment length.

 

ABSTRACT

Grouted splice sleeves are used in precast concrete construction and heavily reinforced concrete sections to splice two adjacent reinforcing steel bars. The behavior of such splices is a function in two important mechanisms: the bond behavior and the confinement action. In this paper, the mechanical behavior of simple, economic, and non- proprietary grouted splice sleeve connector under axial tensile load is investigated. Feasibility study for tested grouted sleeves reporting their adequacy in accordance with the code provisions of ACI 318-14 and ECP 203-2007 is presented. Moreover, design equations capturing the parameters affecting the bond strength, the confining pressure, and the required embedment length are derived. Four series with a total number of 57 grouted splices were fabricated to splice reinforcing steel bars of 12 mm and 16 mm in diameter and nominal yield strength of 400 MPa. The results showed that the confinement action added by the steel sleeve to the grouted splices significantly enhanced the bar-to- grout bond strength. The grout-to-sleeve bond was adequately secured by introducing a steel ring at both ends of a smooth sleeve. Importantly, 35 tested specimens are considered satisfactory in accordance with ACI 318-14 and ECP 203-2007 provisions for mechanical splices and can be used in field connection.

 

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