Mechanical properties of an iron oxide formed by corrosion in reinforced concrete structures

2006 ◽  
Vol 48 (12) ◽  
pp. 3988-4000 ◽  
Author(s):  
A. Ouglova ◽  
Y. Berthaud ◽  
M. François ◽  
F. Foct
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Iron Oxide ◽  
Concrete Structures ◽  
Reinforced Concrete Structures

Mechanical properties of an iron oxide formed by corrosion in reinforced concrete structures

2006 ◽  
Vol 136 ◽  
pp. 99-107 ◽  
Author(s):  
A. Ouglova ◽  
M. François ◽  
Y. Berthaud ◽  
S. Caré ◽  
F. Foct
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Iron Oxide ◽  
Concrete Structures ◽  
Reinforced Concrete Structures

scholarly journals Historical reinforced concrete structures – used materials and calculating algorithms

2015 ◽  
Vol 14 (2) ◽  
pp. 105-112 ◽  
Author(s):  
Bartosz Szostak ◽  
Maciej Trochonowicz
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Structural Element ◽  
Historical Building ◽  
Historical Material ◽  
Low Strength ◽  
Concrete Elements

During designing in historical object we can have a problem with historical reinforced concrete elements. Many designers, classifies this elements as low strength. They are convicted that this type of elements in historical building can be only a monument and cannot be used in this construction as an structural element. It is very important in this type of buildings to keep as many historical material as it is possible. Authors researched the literature which has been a guide in the design and execution of these elements. By comprising used algorithms and physico-mechanical properties of old materials with algorithms and materials, which are using today, we are able to estimate the strength of such elements.

scholarly journals Calculation of damage RC constructions according to deformation model

2020 ◽  
Vol 2020 (2) ◽  
pp. 99-106
Author(s):  
Yaroslav Blikharskyy ◽  
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Concrete Beams ◽  
Concrete Structures ◽  
Physical And Mechanical Properties ◽  
Reinforced Concrete Beams ◽  
Core Material ◽  
Deformation Model ◽  
Reinforced Concrete Structures ◽  
The Impact

This article presents results of a theoretical study of reinforced concrete beams with damaged reinforcement. The change of micro-hardness of a reinforcing rebar’s with a diameter of 20 mm of A500C steel in the radial direction is investigated and the thickness of the heat-strengthened layer is established. It is established that the thickness of the thermo-strengthened steel layer of the reinforcing bar with a diameter of 20 mm of A500C is approximately 3 mm. It is shown that the strength characteristics of this layer are on 50% higher compared to the core material of the rebar, while the plasticity characteristics are lower. The aim of the work is to determine the strength and deformability of reinforced concrete structures without damaging the reinforcement and in case of damage. Determining the impact of changes in the physical characteristics of reinforcement on the damage of reinforced concrete structures, according to the calculation to the valid norms, in accordance with the deformation model. To achieve the goal of the work, theoretical calculations of reinforced concrete beams were performed according to the deformation model, according to valid norms. This technique uses nonlinear strain diagrams of concrete and rebar and is based on an iterative method. According to the research program 3 beam samples were calculated. Among them were undamaged control sample with single load bearing reinforcement of ∅20 mm diameter – BC-1; sample with ∅20 mm reinforcement with damages about 40% without changes in the physical and mechanical properties of reinforcement – BD-2 and sample with ∅20 mm reinforcement with damages about 40% with changes in the physical and mechanical properties of reinforcement – BD-3. The influence of change of physical and mechanical characteristics of rebar’s on bearing capacity of the damaged reinforced concrete beams is established.

scholarly journals The Mechanical Properties of Centrifuged Concrete in Reinforced Concrete Structures

2020 ◽  
Vol 10 (10) ◽  
pp. 3570
Author(s):  
Romualdas Kliukas ◽  
Ona Lukoševičienė ◽  
Arūnas Jaras ◽  
Bronius Jonaitis
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Concrete Strength ◽  
Concrete Structures ◽  
High Strength ◽  
Reinforcement Ratio ◽  
Transverse Reinforcement ◽  
Reinforced Concrete Structures ◽  
Test Results ◽  
Moduli Of Elasticity

This article explores the influence of transverse reinforcement (spiral) and high-strength longitudinal reinforcements on the physical-mechanical properties of centrifuged annular cross-section elements of concrete. The test results of almost 200 reinforced, and over 100 control elements are summarizing in this article. The longitudinal reinforcement ratio of samples produced in the laboratory and factory varied from 1.0% to 6.0%; the transverse reinforcement ratio varied from 0.25% to 1.25%; the pitch of spirals varied from 100 mm to 40 mm and the concrete strength varied from 25 MPa to 60 MPa. Experimental relationships of coefficients for concrete strength, moduli of elasticity and limits of the longitudinal strain of centrifuged concrete in reinforced concrete structures in short-term concentrically compression were proposed.

scholarly journals Improvement of mechanical properties of reinforcing steel used in the reinforced concrete structures

2009 ◽  
Vol 16 (3) ◽  
pp. 55-63 ◽  
Author(s):  
Oĝuzhan Keleştemur ◽  
M Halidun Kelestemur ◽  
Servet Yildiz
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Reinforcing Steel

Iron-oxide-identifying imaging method based on a wide-energy neutron beam for corrosion inspection in reinforced concrete structures

2021 ◽  
Vol 92 (12) ◽  
pp. 123703
Author(s):  
Binbin Tian ◽  
Sheng Wang ◽  
Hantao Jing ◽  
Mingfei Yan ◽  
Xiaolong Gao ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Iron Oxide ◽  
Neutron Beam ◽  
Concrete Structures ◽  
Imaging Method ◽  
Reinforced Concrete Structures ◽  
Energy Neutron ◽  
Wide Energy

scholarly journals Research Progress and Engineering Applications of Stainless Steel-Reinforced Concrete Structures

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Jian Yuan ◽  
Zhinan Ou
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Reinforced Concrete ◽  
Design Theory ◽  
Concrete Structures ◽  
Research Progress ◽  
Reinforced Concrete Structures ◽  
Steel Reinforced Concrete ◽  
Concrete Members ◽  
Ordinary Steel

The durability of concrete structures can effectively be enhanced by using stainless steel rather than ordinary steel reinforcements under harsh service conditions. Because the basic mechanical properties and stress-strain relationship of stainless steel reinforcements obviously differ from those of ordinary steel reinforcements, the current design codes for reinforced concrete structures are not appropriate for stainless steel-reinforced concrete. On the basis of the research works reported in the past decades, this paper systematically summarizes and analyzes the mechanical properties and corrosion resistance of stainless steel reinforcements, the properties of the bond between stainless steel reinforcements and concrete, the mechanical properties of stainless steel-reinforced concrete members, and the application of stainless steel reinforcements in practical engineering and proposes relevant problems which should be examined further. It is suggested that the design theory of stainless steel-reinforced concrete structures should be further improved to take full advantage of these structures.

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