scholarly journals Elevated temperature performance of reinforced concrete beams containing waste polypropylene fibers

2020 ◽  
Vol 21 ◽  
pp. 100705
Author(s):  
Zainab M.R. Abdul Rasoul ◽  
Mushtaq Sadiq Radhi ◽  
Aymen J. Alsaad ◽  
Haider Muhannad
Keyword(s):  
Reinforced Concrete ◽  
Elevated Temperature ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Polypropylene Fibers ◽  
Temperature Performance ◽  
Elevated Temperature Performance ◽  
Waste Polypropylene

The Behavior of Reinforced and Pre-Stressed Concrete Beams under Elevated Temperature

2020 ◽  
Vol 47 ◽  
pp. 15-30
Author(s):  
Amr H. Badawy ◽  
Ahmed Hassan ◽  
Hala El-Kady ◽  
L.M. Abd-El Hafez
Keyword(s):  
Reinforced Concrete ◽  
Elevated Temperature ◽  
Prestressed Concrete ◽  
Mechanical Performance ◽  
Concrete Beams ◽  
Load Capacity ◽  
Reinforced Concrete Beams ◽  
Flexural Behavior ◽  
Second Phase ◽  
Prestressed Beam

The behavior of unbounded post tension and reinforced concrete beams under elevated temperature was presented. The experimental work was consisted of two major phases. In the first phase, the objective was studying the mechanical performance of prestressed beam, prestressed beam with steel addition and reinforced concrete beams respectively were studied. In the second phase, the residual mechanical performance of prestressed beam, prestressed beam with steel addition and reinforced concrete beams under elevated 400oC, for 120 minutes durations. The failure mechanisms, ultimate load capacity, and deflection at critical sections were monitored. The numerical prediction of the flexural behavior of the tested specimens is presented in this paper. This includes a comparison between the numerical and experimental test results according to ANSYS models. The results indicate that the prestressed beam with steel addition and reinforced concrete beams had higher resistance to beams under elevated 400oC than that of prestressed concrete beam in terms of ultimate capacity. It is also shown that the reinforced concrete beams have higher resistance to beams under elevated temperature than that of prestressed beam, prestressed beam with steel addition.

3D numerical analysis of reinforced concrete beams exposed to elevated temperature

2014 ◽  
Vol 58 ◽  
pp. 166-174 ◽  
Author(s):  
Joško Ožbolt ◽  
Josipa Bošnjak ◽  
Goran Periškić ◽  
Akanshu Sharma
Keyword(s):  
Reinforced Concrete ◽  
Elevated Temperature ◽  
Numerical Analysis ◽  
Concrete Beams ◽  
Reinforced Concrete Beams

Flexural Behavior of Fiber Reinforced Concrete Beams Confined with FRP

2012 ◽  
Vol 256-259 ◽  
pp. 938-941
Author(s):  
Kasinathan Rajkumar ◽  
A.M. Vasumathi
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Polypropylene Fiber ◽  
Fiber Reinforced Concrete ◽  
Reinforced Concrete Beams ◽  
Flexural Behavior ◽  
Polypropylene Fibers ◽  
Fiber Reinforced ◽  
Frp Wrapping ◽  
Polypropylene Fiber Reinforced Concrete

In this paper, an attempt to overcome the problem of brittleness of concrete, by adding polypropylene fibers to the concrete is made. The performance of the polypropylene fiber reinforced concrete will be investigated experimentall under two point middle third of monotonic load for various types of polypropylene fibers and FRP Wrapping.

Retrofitting of different types of reinforced concrete beams after exposed to elevated temperature

2019 ◽  
Vol 194 ◽  
pp. 420-430 ◽  
Author(s):  
Ahmed Hassan ◽  
Faisal Aldhafairi ◽  
L.M. Abd-EL-Hafez ◽  
A.E.Y. Abouelezz
Keyword(s):  
Reinforced Concrete ◽  
Elevated Temperature ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Different Types

scholarly journals An Experimental Study of Shear Resistance for Multisize Polypropylene Fiber Concrete Beams

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Xin Yang ◽  
Ninghui Liang ◽  
Yang Hu ◽  
Rui Feng
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Concrete Beams ◽  
Polypropylene Fiber ◽  
Initial Crack ◽  
Reinforced Concrete Beams ◽  
Polypropylene Fibers ◽  
Computational Formula ◽  
Fiber Concrete ◽  
Material Theory

AbstractTo study the influence of polypropylene fibers with different thicknesses on concrete beams, inclined section shear tests of polypropylene fiber concrete beams were carried out. The cracking load, ultimate load, midspan deflection, reinforcement, and strain of polypropylene fiber concrete beams and conventional reinforced-concrete beams under shear were compared and analyzed. The load-bearing capacity of the rectangular beams was improved significantly by polypropylene fiber addition. Compared with conventional reinforced-concrete beams, the limit shear load of concrete beams with polypropylene fibers and multisize polypropylene concrete beams that were reinforced with three types of fibers increased by 8.67% and 17.07%, respectively. By mixing polypropylene fibers into concrete beams, the initial crack shear force of the beam was improved, the number of cracks was increased and the crack width was reduced, which can increase the beam ductility, inhibit crack formation and increase the strength. The computational formula of the shear ultimate bearing capacity of polypropylene fiber–concrete beams was revised according to composite material theory, and the calculated results were consistent with the test values.

Sign in / Sign up

Export Citation Format

Share Document