### Influence of Concrete Strength on the Stress-Strain ...

The results show a drop in compressive strength of concrete with the increase in replacement percentage of RA. However, steel confinement has a positive role to counterbalance the adverse effect of RA replacement on concrete strength. Improved ductility and stress-strain behavior of RAC are observed with the increase in confinement pressure.

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Get price### PAPER OPEN ACCESS Influence of Concrete Strength on the ...

Influence of Concrete Strength on the Stress-Strain Behavior of Spirally Confined Recycled Aggregate Concrete To cite this article: Muhammad J Munir et al 2020 IOP Conf. Ser.: Mater. Sci. Eng. 829 ...

Get price### Influence of concrete strength and confinement method on ...

Jul 01, 2013 Influence of concrete strength on stress–strain behavior of test specimens: (a) FRP tube-encased, Group 1; (b) FRP tube-encased, Group 2; (c) FRP-wrapped, Group 1; (d) FRP-wrapped, Group 2. Fig. 8 a and b presents a graphical comparison of the influence of concrete strength on the ultimate conditions of the specimens.

Get price### Influence of concrete age on stress–strain behavior of FRP ...

May 01, 2015 To illustrate the influence of concrete age on the ultimate condition of FRP-confined concrete, Figs. 12(a) and 13(a) show the variation of the strength and strain enhancement ratios (f′ cc /f′ co and ε cu /ε co) with concrete age for specimens of the present study.

Get price### Influence of high strain rates on stress–strain ...

Download Citation Influence of high strain rates on stress–strain relationship, strength and elastic modulus of concrete Earlier papers showed a method for strength evaluation at high strain ...

Get price### Influence of Concrete Strength on the Stress-Strain ...

Reset your password. If you have a user account, you will need to reset your password the next time you login. You will only need to do this once.

Get price### Influence of high strain rates on stress–strain ...

Download Citation Influence of high strain rates on stress–strain relationship, strength and elastic modulus of concrete Earlier papers showed a method for strength evaluation at high strain ...

Get price### Influence of high strain rates on stress–strain ...

Nov 01, 2008 Using a new measurement technique based on a new algorithm for a stress–strain diagram it was concluded that the nonlinear behavior of concrete under high strain rates does not become more brittle: the ultimate strain, i.e. the strain corresponding to compressive strength, increased of 1.4, although the strength increased of 1.7 .. Curbach and Eibl observed also the behavior of the

Get price### Influence of Rheological Characteristics of Concrete on ...

Nov 14, 2019 A comparative analysis is presented of the influence of the rheological characteristics of concrete on the stress strain state of NPP containment shells. It is based on creep and shrinkage tests performed on concrete, field observations, and calculations of the strains and stresses engendered in the reinforcement and concrete by the shrinkage and creep of concrete. The results showed ...

Get price### Factors Affecting Strength of Concrete - The Constructor

Factors Affecting Strength of Concrete Concrete strength is affected by many factors, such as quality of raw materials, water/cement ratio, coarse/fine aggregate ratio, age of concrete, compaction of concrete, temperature, relative humidity and curing of concrete. Quality

Get price### TECHNICAL PAPER The influence of concrete

The influence of concrete compressive strength and specimen size on the compression stress block parameters of reinforced concrete F van Schalkwyk, E P Kearsley This paper describes the influence of concrete compressive strength and specimen size on the fundamental characteristics of the flexural compressive stress-strain distribution.

Get price### Influence of Geometrical Parameters of the Cross Section ...

New concrete materials and their structures are increasingly diverse, so it requires extensive methods of calculating reinforced concrete structures, including multi-layered reinforced concrete structures. For usage in the practice of modern construction of multilayer structures made of concrete with different physic-mechanical characteristics, it is compulsory to conduct numerical studies of ...

Get price### Influence of Steel Fibers on Design Stress-Strain Curve ...

Aug 01, 1996 A new proposal for the realistic stress-strain curve for high-strength fiber concrete is presented and a proposal to take into account the effect of steel fibers on the design stress-strain curve for the design of high-strength concrete under compression is given.

Get price### STRESS-STRAIN CURVES OF CONCRETE CONFINED BY SPIRAL ...

n2 - stress-strain curves of concrete confined with spiral reinforcement were determined. the influence of compressive strength, aggregate type, and the spacing and yield strength of hoop reinforcement was investigated. a model was developed onproperties of the hoop reinforcement and constitutive relationship of plain concrete.

Get price### Stress-Strain Curves of High Strength Concrete at ...

Stress-Strain Curves of High Strength Concrete at Heightened Temperatures Abstract—the stress-strain curve of High Strength Concrete (HSC) depends on temperature conditions. Elevated temperatures affect the strength, ductility, elastic modulus and brittleness of concrete. A study will be conducted to investigate the effect of elevated temperatures on the stress-strain curves of HSC. The ...

Get price### (PDF) Influence of the Mechanical Properties of Lime ...

Venkatarama Reddy BV, Vyas Uday CV (2008). Influence of shear bond strength on compressive strength and stress-strain of masonry. Mat Struct 41: 1697-1712 5. Kaushik HB, Rai DC, Jain SK (2007) Stress-Strain Characteristics of Clay Brick Masonry

Get price### Materials Free Full-Text Optimizing the Mechanical ...

This study describes an extensive experimental investigation of various mechanical properties of Ultra-High-Performance Fibre-Reinforced Concrete (UHPFRC). The scope is to achieve high strength and ductile behaviour, hence providing optimal resistance to projectile impact. Eight different mixtures were produced and tested, three mixtures of Ultra-High-Performance Concrete (UHPC) and five ...

Get price### Experimental Study of a New Concrete Admixture and Its ...

A concrete admixture with water retention and superhydrophobic properties was developed according to the high tensile strength, fissure resistance, and antiseepage requirements of concrete linings. Capillary water absorption, early-age anticracking, cube compressive strength, and splitting tensile tests were employed to study the effects of the new concrete admixture on the basic performance ...

Get price### Articulo en Ingles PDF Fracture Deformation ...

Articulo en Ingles - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

Get price### Influence of high strain rates on stress–strain ...

This paper presents new results on the influence of high strain rates on the stress–strain relationship, strength and modulus of elasticity using the thermofluctuation theory, principle of accumulation and development damages as well as nonlinear behavior of concrete under loading.

Get price### Influence of concrete age on stress–strain behavior of FRP ...

This paper presents the results of an experimental study on the influence of concrete age on the compressive behavior of FRP-confined normal-strength (NSC) and high-strength concrete (HSC). The first part of the paper presents the results of 18 FRP-confined and 18 unconfined concrete specimens tested at 7 and 28 days.

Get price### Influence of Rheological Characteristics of Concrete on ...

Nov 14, 2019 A comparative analysis is presented of the influence of the rheological characteristics of concrete on the stress strain state of NPP containment shells. It is based on creep and shrinkage tests performed on concrete, field observations, and calculations of the strains and stresses engendered in the reinforcement and concrete by the shrinkage and creep of concrete. The results showed ...

Get price### Mechanics Concrete Stress-Strain

Conc Strs-Strn 5 Concrete Strength • Here is a plot of the resulting stress vs. strain Stress (psi) strain f ’ c • The maximum stress that the concrete can take, the concrete strength,is called f’ C You may have to correct your data around the zero point. Graph starts at zero

Get price### TECHNICAL PAPER The influence of concrete

The influence of concrete compressive strength and specimen size on the compression stress block parameters of reinforced concrete F van Schalkwyk, E P Kearsley This paper describes the influence of concrete compressive strength and specimen size on the fundamental characteristics of the flexural compressive stress-strain distribution.

Get price### Influence of Geometrical Parameters of the Cross Section ...

New concrete materials and their structures are increasingly diverse, so it requires extensive methods of calculating reinforced concrete structures, including multi-layered reinforced concrete structures. For usage in the practice of modern construction of multilayer structures made of concrete with different physic-mechanical characteristics, it is compulsory to conduct numerical studies of ...

Get price### Theoretical Stress‐Strain Model for Confined Concrete

the strength and the ductility of compressed concrete. In particular, the strength enhancement from confinement and the slope of the descending branch of the concrete stress-strain curve have a considerable influence on the flexural strength and ductility of reinforced concrete columns. Theoretical moment-curvature analysis for reinforced concrete

Get price### (PDF) Analytical formulation of the complete stress-strain ...

A new proposal for the realistic stress-strain curve for high-strength fiber concrete is presented and a proposal to take into account the effect of steel fibers on the design stress-strain curve ...

Get price### Factors Affecting Strength of Concrete - The Constructor

Factors Affecting Strength of Concrete Concrete strength is affected by many factors, such as quality of raw materials, water/cement ratio, coarse/fine aggregate ratio, age of concrete, compaction of concrete, temperature, relative humidity and curing of concrete. Quality

Get price### A concrete damaged plasticity model for predicting the ...

Sep 04, 2021 The specimens with geometry Ø77 × 40 mm (cylinder with 77 mm diameter and 40 mm height) in each of C60, C80 and C110 are selected to test under dynamic loading using Split Hopkinson Pressure Bar (SHPB) technique at various strain rates ranging from 40 s −1 to 110s −1.The results in each grade of concrete are expressed as a stress-strain curve in Fig. 2, Fig. 3, Fig. 4.

Get price### Stress-Strain Curves of High Strength Concrete at ...

Stress-Strain Curves of High Strength Concrete at Heightened Temperatures Abstract—the stress-strain curve of High Strength Concrete (HSC) depends on temperature conditions. Elevated temperatures affect the strength, ductility, elastic modulus and brittleness of concrete. A study will be conducted to investigate the effect of elevated temperatures on the stress-strain curves of HSC. The ...

Get price### STRESS-STRAIN CURVES OF CONCRETE CONFINED BY SPIRAL ...

n2 - stress-strain curves of concrete confined with spiral reinforcement were determined. the influence of compressive strength, aggregate type, and the spacing and yield strength of hoop reinforcement was investigated. a model was developed onproperties of the hoop reinforcement and constitutive relationship of plain concrete.

Get price### Influence of Slenderness on Stress-Strain Behavior of ...

Conversely, the influence of slenderness on axial strength enhancement of specimens with a H / D ratio between 2 and 5 was found to be negligible. The strain results indicate that hoop rupture strains along the height of CFFTs become more uniform for specimens with higher amounts of confinement.

Get price### Impact of High Temperature on the Compressive Strength of ECC

Jun 25, 2014 The influence of different cooling regimes (quenching in water and cooling in air) on the residual mechanical properties of ECC (engineered cementitious composites) exposed to high temperature up to 800°C was discussed in this paper. The specimens quenching in water gained better mechanical properties than the ones cooling in air. The strengthening effect of quenching for

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