Fracture properties of high-strength hybrid fiber-reinforced concrete

2007 ◽  
pp. 139-146 ◽  
Author(s):  
Luca Cominoli ◽  
Alberto Meda ◽  
Giovanni A. Plizzari
Keyword(s):  
Reinforced Concrete ◽  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Fracture Properties

Experimental Study on Fracture Properties of Hybrid Fiber Reinforced Concrete

2012 ◽  
Vol 450-451 ◽  
pp. 518-522 ◽  
Author(s):  
Yun Da Shao ◽  
Wen Feng Wang
Keyword(s):  
Reinforced Concrete ◽  
Steel Fiber ◽  
Polypropylene Fiber ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Crack Tip Opening Displacement ◽  
Hybrid Fiber ◽  
Opening Displacement ◽  
Critical Crack ◽  
Fracture Properties

Though fracture test on the fifteen specimens with notch of hybrid fiber reinforced concrete with the size of 100mm×100mm×400mm, this paper explores the hybrid effect between steel fiber and polypropylene fiber and impact on the fracture properties, such as critical effective crack length, critical crack tip opening displacement, effective stress intensity factors and fracture energy. The test results indicate that the addition of fiber is helpful to improve the fracture properties of concrete. Synergistic effect of two kinds of fibers is good, the steel fiber with high elastic module can restrain the cracking of concrete when the crack displacement is small, polypropylene macro-fiber with high ductility is more beneficial to increase the fracture properties of concrete than steel fiber when the crack displacement is big. The best fiber compounding can be gotten when the volume fractions of steel fiber and polypropylene fiber is respectively 0.5％and 1.0％in this experiment.

scholarly journals Efficiency of dispersed concrete hybrid fiber reinforcement with low-modulus fibers

2021 ◽  
Vol 18 (2) ◽  
pp. 128-133
Author(s):  
M. P. Kostrikin ◽  
Keyword(s):  
Reinforced Concrete ◽  
Experimental Studies ◽  
Fiber Reinforcement ◽  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Low Modulus ◽  
Hybrid Reinforcement ◽  
Strength And Durability

The article describes the results of experimental studies of the effect of low-modulus synthetic micro- and macro-fibers, taken separately and in combinations, on strength and durability of fiber-reinforced concrete. On the basis of the obtained data in fiber-reinforced concrete specimens testing for tension in bending, there were constructed diagrams of the deformation, according to which the influence of individual types of fibers and their combinations during hybrid reinforcement on the type of the destruction of composites was determined, the values of their power and energy characteristics were calculated. The effective ratios between the fibers during hybrid fiber-reinforcement have been determined, which makes it possible to obtain fiber-reinforced concrete with high strength and durability indicators.

scholarly journals A review on hybrid fiber reinforced concrete pavements technology

2021 ◽  
Vol 1895 (1) ◽  
pp. 012053
Author(s):  
Hadeel M. Shakir ◽  
Ahmed Farhan Al-Tameemi ◽  
Adel A. Al-Azzawi
Keyword(s):  
Reinforced Concrete ◽  
Fiber Reinforced Concrete ◽  
Concrete Pavements ◽  
Fiber Reinforced ◽  
Hybrid Fiber
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