Flexural strengthening of reinforced concrete beams or slabs using ultra-high performance concrete (UHPC): A state of the art review

2020 ◽  
Vol 205 ◽  
pp. 110035 ◽  
Author(s):  
Yanping Zhu ◽  
Yang Zhang ◽  
Husam H. Hussein ◽  
Genda Chen
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
High Performance Concrete ◽  
Concrete Beams ◽  
State Of The Art ◽  
Reinforced Concrete Beams ◽  
Ultra High Performance Concrete ◽  
Flexural Strengthening

scholarly journals Influence of Cracking on Oxygen Transport in UHPFRC Using Stainless Steel Sensors

2019 ◽  
Vol 10 (1) ◽  
pp. 239
Author(s):  
Ana Martínez-Ibernón ◽  
Marta Roig-Flores ◽  
Josep Lliso-Ferrando ◽  
Eduardo J. Mezquida-Alcaraz ◽  
Manuel Valcuende ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Reinforced Concrete ◽  
High Performance ◽  
High Performance Concrete ◽  
Oxygen Availability ◽  
Fiber Reinforced Concrete ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced ◽  
Ultra High Performance Concrete ◽  
Cracking Behavior

Reinforced concrete elements frequently suffer small cracks that are not relevant from the mechanical point of view, but they can be an entrance point for aggressive agents, such as oxygen, which could initiate the degradation processes. Fiber-Reinforced Concrete and especially Ultra High Performance Concrete increase the multi-cracking behavior, reducing the crack width and spacing. In this work, the oxygen availability of three types of concrete was compared at similar strain levels to evaluate the benefit of multi-cracking in the transport of oxygen. The types of concrete studied include traditional, High-Performance, and Ultra-High-Performance Fiber-Reinforced Concrete with and without nanofibers. To this purpose, reinforced concrete beams sized 150 × 100 × 750 mm3 were prepared with embedded stainless steel sensors that were located at three heights, which have also been validated through this work. These beams were pre-cracked in bending up to fixed strain levels. The results indicate that the sensors used were able to detect oxygen availability due to the presence of cracks and the detected differences between the studied concretes. Ultra High Performance Concrete in the cracked state displayed lower oxygen availability than the uncracked High Performance Concrete, demonstrating its potential higher durability, even when working in cracked state, thanks to the increased multi-cracking response.

scholarly journals Flexural behavior of reinforced concrete beams: Comparative analysis between high-performance concrete and ordinary concrete

2014 ◽  
Vol 11 ◽  
pp. 02003 ◽  
Author(s):  
Mostefa Hamrat ◽  
Bensaid Boulekbache ◽  
Mohamed Chemrouk ◽  
Sofiane Amziane
Keyword(s):  
Reinforced Concrete ◽  
Comparative Analysis ◽  
High Performance ◽  
High Performance Concrete ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Flexural Behavior ◽  
Ordinary Concrete

scholarly journals Serviceability limit states of high performance reinforced concrete beams with hybrid fibre

2013 ◽  
Vol 12 (1) ◽  
pp. 155-162
Author(s):  
Piotr Smarzewski
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
High Performance Concrete ◽  
Concrete Beams ◽  
Fibre Volume ◽  
Reinforced Concrete Beams ◽  
Fibre Reinforcement ◽  
Limit States ◽  
Polypropylene Fibres ◽  
Volume Percentage

The article presents the results of research and analysis of reinforced high performance concrete beams with steel and polypropylene fibres at service load. The beams were bent in the 4-point model. Research was carried out for three different rectangular reinforced concrete beams in terms of the quantity and the type of reinforcement. The beam B1 was constructed conventionally with reinforced steel rods. The beams B2 and B3, instead of the compressive rods and the stirrups the fibre reinforcement of variable fibre volume percentage was applied. In the tests a non-contact system for three-dimensional measurements of deformation – ARAMIS was used. The analysis of the behaviour of the beams under static load for serviceability was based on: images of cracks, strain and force – displacement curves.

scholarly journals Flexural Strengthening of Reinforced Concrete Beams with Externally Bonded Hybrid Systems

2020 ◽  
Vol 28 ◽  
pp. 2312-2319
Author(s):  
Jamal A. Abdalla ◽  
Abubakr Mohammed ◽  
Rami A. Hawileh
Keyword(s):  
Reinforced Concrete ◽  
Hybrid Systems ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Flexural Strengthening ◽  
Externally Bonded

Transfer and Development Lengths and Prestress Losses in Ultra-High-Performance Concrete Beams

2011 ◽  
Vol 2251 (1) ◽  
pp. 76-81 ◽  
Author(s):  
Emerson E. John ◽  
Edmundo D. Ruiz ◽  
Royce W. Floyd ◽  
W. Micah Hale
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Concrete Beams ◽  
Ultra High Performance Concrete ◽  
Prestress Losses

Flexural Strengthening of Reinforced Concrete Beams with Longitudinal Circular Hole Using Near-Surface Mounted CFRP Strips

2022 ◽  
Vol 27 (2) ◽  
Author(s):  
Nasser Al-Huthaifi ◽  
Ayah A. Alkhawaldeh ◽  
Yasmeen T. Obaidat ◽  
Mohammad A. Alkhawaldeh
Keyword(s):  
Reinforced Concrete ◽  
Circular Hole ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Near Surface ◽  
Flexural Strengthening ◽  
Near Surface Mounted
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