An experimental study on the post-cracking behavior of Polypropylene Fiber Reinforced Concrete core samples drilled from precast tunnel segments

2019 ◽  
pp. 2734-2743
Author(s):  
A. Mudadu ◽  
G. Tiberti ◽  
A. Conforti ◽  
I. Trabucchi ◽  
G.A. Plizzari
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Polypropylene Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Concrete Core ◽  
Cracking Behavior ◽  
Core Samples ◽  
Polypropylene Fiber Reinforced Concrete

scholarly journals Tension Stiffening Behavior of Polypropylene Fiber- Reinforced Concrete Tension Members

2021 ◽  
Vol 53 (2) ◽  
pp. 210209
Author(s):  
Aris Aryanto ◽  
Berto Juergen Winata
Keyword(s):  
Reinforced Concrete ◽  
Polypropylene Fiber ◽  
Fiber Reinforced Concrete ◽  
Polypropylene Fibers ◽  
Fiber Reinforced ◽  
Tension Stiffening ◽  
Cracking Behavior ◽  
Tension Members ◽  
Polypropylene Fiber Reinforced Concrete ◽  
Fiber Addition

This paper focuses on comparing the behavior of RC tension members with and without the addition of polypropylene fibers at various corrosion levels. Eight cylindrical tensile specimens were tested to evaluate their tension-stiffening and cracking behavior. The content of polypropylene fiber added into the concrete mix was the main variable (0.25%, 0.50%, 0.75%, and 1.0% of total volume). The corrosion level was varied from slight (5%), medium (10%) to severe (30%) and, like the other variables, applied only to 1.0% polypropylene fiber-reinforced concrete (PFRC) specimens. The test results showed that the fiber addition significantly increased the tension-stiffening effect but was largely unable to reduce the effect of bond degradation caused by corrosion. Moreover, the addition of polypropylene fibers was able to improve the cracking behavior in terms of crack propagation, as shown by smaller crack spacing compared to the specimen without fiber addition at the same corrosion level.

Experimental Study on Flexural Toughness of Steel-Polypropylene Fiber Reinforced Concrete

2011 ◽  
Vol 261-263 ◽  
pp. 156-160 ◽  
Author(s):  
Zhi Gang Ren ◽  
Peng Tao Hu ◽  
You Zou
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Crack Resistance ◽  
Polypropylene Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Steel Fiber Reinforced Concrete ◽  
Flexural Toughness ◽  
Macro Scale ◽  
Polypropylene Fiber Reinforced Concrete

The Steel-polypropylene fiber reinforced concrete take full advantage of steel fiber’s macro-scale crack resistance function on the concrete as well as the polypropylene fiber’s micro-scale crack resistance and toughening effect on the concrete matrix. In this paper, the three kinds of concrete specimens including plain high-strength concrete, steel fiber reinforced concrete and steel-polypropylene fiber concrete are selected for a flexural toughness experimental study, their compressive strength and deformation performance are analyzed, and their toughness index are investigated with ASTM-C1018 and PCS(post-crack strength) method. The results show that steel-polypropylene fiber reinforced concrete has better strength and toughness property as well as deformation performance.

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