Time-Dependent Behavior of Normal and High Strength Concrete Beams Reinforced with GFRP Bars under Sustained Loads

2003 ◽  
Author(s):  
Shawn P. Gross ◽  
Joseph Robert Yost ◽  
George J. Kevgas
Keyword(s):  
High Strength Concrete ◽  
Concrete Beams ◽  
High Strength ◽  
Time Dependent ◽  
Strength Concrete ◽  
Gfrp Bars ◽  
Dependent Behavior ◽  
Sustained Loads

Shear Strength of Normal and High Strength Concrete Beams Reinforced with GFRP Bars

2003 ◽  
Author(s):  
Shawn P. Gross ◽  
Joseph Robert Yost ◽  
David W. Dinehart ◽  
Erik Svensen ◽  
Ning Liu
Keyword(s):  
Shear Strength ◽  
High Strength Concrete ◽  
Concrete Beams ◽  
High Strength ◽  
Strength Concrete ◽  
Gfrp Bars

scholarly journals Theoretical Investigation of Nonlinear Time-Dependent Behavior of Two-Way High-Strength Concrete Walls

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Yue Huang ◽  
Rui Rao ◽  
Yonghui Huang ◽  
Zilin Zhong
Keyword(s):  
Geometric Nonlinearity ◽  
High Strength Concrete ◽  
High Strength ◽  
Time Dependent ◽  
Fourier Series Expansion ◽  
Time Step ◽  
Strength Concrete ◽  
Dependent Behavior ◽  
Long Term Behavior

High-strength concrete (HSC) walls have been increasingly used in the past decades. However, the time-dependent behavior of HSC wall panels in two-way action was not investigated, and the time effect of creep is not included in the design codes in most countries. For this purpose, the nonlinear long-term behavior of two-way HSC wall is investigated in this paper. A theoretical model is developed using time-stepping analysis considering geometric nonlinearity and creep of concrete. A rheological material model that is based on the generalized Maxwell chain is adopted to model the concrete creep. Von Karman plate theory is used to derive the incremental governing equations. The equations are solved numerically at each time step based on a Fourier series expansion of the deformations and loads and numerical multiple shooting method. It shows that the model can effectively predict the time-dependent behavior of two-way HSC panels, where the out-of-plane deflection and internal bending moments increase with time due to the combined effects of creep and geometric nonlinearity, which may ultimately lead to creep buckling failures. A parametric study shows that the long-term behavior of the panel is very sensitive to the in-plane load level and eccentricity, slenderness ratio, aspect ratio, and edge support conditions.

scholarly journals BEHAVIOR OF HIGH STRENGTH CONCRETE BEAMS REINFORCED WITH (GFRP) BARS

2021 ◽  
Vol 16 (61) ◽  
pp. 1056-1075
Author(s):  
Mohamed Elnagar ◽  
Saeed Hasanine ◽  
Mohamed Nooman ◽  
El-Sayed Abdel Raouf
Keyword(s):  
High Strength Concrete ◽  
Concrete Beams ◽  
High Strength ◽  
Strength Concrete ◽  
Gfrp Bars

Flexural behavior of partially fiber-reinforced high-strength concrete beams reinforced with FRP bars

2018 ◽  
Vol 161 ◽  
pp. 587-597 ◽  
Author(s):  
Haitang Zhu ◽  
Shengzhao Cheng ◽  
Danying Gao ◽  
Sheikh M. Neaz ◽  
Chuanchuan Li
Keyword(s):  
High Strength Concrete ◽  
Concrete Beams ◽  
High Strength ◽  
Flexural Behavior ◽  
Fiber Reinforced ◽  
Strength Concrete ◽  
Frp Bars

scholarly journals Experimental Study on the Torsional Behaviour of Prestressed HSC Hollow Beams

2020 ◽  
Vol 10 (2) ◽  
pp. 642 ◽  
Author(s):  
Luís Bernardo ◽  
Sérgio Lopes ◽  
Mafalda Teixeira
Keyword(s):  
Experimental Study ◽  
High Strength Concrete ◽  
Concrete Beams ◽  
Concrete Strength ◽  
High Strength ◽  
Experimental Program ◽  
Pure Torsion ◽  
Strength Concrete ◽  
Hollow Beams

This article describes an experimental program developed to study the influence of longitudinal prestress on the behaviour of high-strength concrete hollow beams under pure torsion. The pre-cracking, the post-cracking and the ultimate behaviour are analysed. Three tests were carried out on large hollow high-strength concrete beams with similar concrete strength. The variable studied was the level of longitudinal uniform prestress. Some important conclusions on different aspects of the beams’ behaviour are presented. These conclusions, considered important for the design of box bridges, include the influence of the level of prestress in the cracking and ultimate behaviour.

A Comparative Investigation on Normal and High Strength Concrete Beams under Torsion

2022 ◽  
Vol 1048 ◽  
pp. 359-365
Author(s):  
Ihtesham Hussain Mohammed ◽  
Ahmed Majid Salim Al Aamri ◽  
Shakila Javed ◽  
Yahya Ubaid Al Shamsi
Keyword(s):  
High Strength Concrete ◽  
Concrete Beams ◽  
High Strength ◽  
Comparative Investigation ◽  
Mineral Admixtures ◽  
Torsional Loading ◽  
Torsional Strength ◽  
Strength Concrete ◽  
Loading Method ◽  
Normal Strength

In this study, an experimental investigation was done to study the behaviour of Normal Strength Concrete (NSC) and High Strength Concrete (HSC) Plain beams under torsion with the concrete mix of M40 and M100. No mineral admixtures are used to obtain the required strength of concrete. Eight NSC beams and eight HSC beams whose width was varying with 75 mm, 100 mm, and 150 mm; depth varying as 75 mm, 100 mm, 150 mm and 200 mm; and span of the beams varying 600 mm, 800 mm and 1200 mm were casted and cured to stud the effect of torsion. The principle aim of this study was to understand the torsional behaviour of the NSC and HSC beams for rotation, cracking, size effect and torsional strength. A standard torsional loading method was used for conducting the testing of beams. The results obtained were compared with different theories and code equations. It was observed that the torsional strength of the beam increases with the increase in strength of concrete. HSC beams have higher torsional strength than the NSC beams which has the same amount of reinforcement.

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