Experimental Study on Strengthening of Corroded RC Beams with High-Performance Steel Fiber Mortar and Normal Reinforcements

2021 ◽  
Author(s):  
Thanh-Hung Nguyen ◽  
Dinh-Hung Nguyen ◽  
Duy-Duan Nguyen
Keyword(s):  
Experimental Study ◽  
High Performance ◽  
Steel Fiber ◽  
Rc Beams ◽  
High Performance Steel

scholarly journals TENSILE BEHAVIOUR OF ULTRA-HIGH-PERFORMANCE STEEL FIBER REINFORCED CONCRETE

2020 ◽  
Author(s):  
Yuechen Yang ◽  
Mohammed Ismail ◽  
Stavroula Pantazopoulou ◽  
Dan Palermo
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
Steel Fiber ◽  
Fiber Reinforced Concrete ◽  
Bending Test ◽  
Tensile Behaviour ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Splitting Test ◽  
High Performance Steel

Recent developments in the area of Ultra-High-Performance Steel Fiber Reinforced Concrete (UHP-SFRC) enables reduction in steel reinforcement, and has led to enhanced ductility and toughness of structural components owing to its resilient tensile behaviour. This paper presents the results of an experimental study conducted to investigate the tensile behaviour of UHP-SFRC. Four commercial mixes and two in-house mixes were evaluated using the procedures prescribed in the 2018 edition of Annex 8.1 of CSA-S6. Tensile strength of UHP-SFRC was quantified and correlated through the direct tension test, splitting test, inverse analysis of four-point bending test using either code expressions or nonlinear finite element analysis, and a calibrated empirical expression that links this property to the cylinder compressive strength. In addition, the effect of important parameters on flexural strength including casting methodology, volumetric ratio of steel fibers, and aspect ratio (shear span to depth ratio) of bending prisms have been assessed.

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