strength and damage of concrete under high triaxial

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Strength and damage of concrete under high triaxial ...

Oct 04, 2011  (2010). Strength and damage of concrete under high triaxial loading. European Journal of Environmental and Civil Engineering: Vol. 14, No. 6-7, pp. 777-803.

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(PDF) Strength and damage of concrete under high triaxial ...

Strength and damage of concrete under high triaxial loading. August 2010; ... analysis of concrete under high triaxial lo ading, Journal de Physique IV, 2006, 134, 635-644. DOI : 10.1051/jp4 ...

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Strength and damage of concrete under high triaxial loading

behavior under high stress level (Dupray et al. 2009). The study presented herein is aimed at completing these previous research efforts by focusing on the concrete strength and failure mechanism for triaxial compression tests ranging from simple compression to 650 MPa of confinement. The experimental devices is described in Section 2.

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(PDF) Strength and damage of concrete under high triaxial ...

This device also allowed studying the mortar behavior under high stress level (Dupray et al. 2009).The study presented herein is aimed at completing these previous research efforts by focusing on the concrete strength and failure mechanism for triaxial compression tests ranging from simple compression to 650 MPa of confinement.

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Damage constitutive for high strength concrete in triaxial ...

Jul 01, 2002  The empirical failure criterion based on the four parameter model of Ottosen (1977) is valid also for high strength concrete. 2. The proposed bounding surface is able to portray the mechanism of damage in high strength concrete and therefore yields an appropriate constitutive model for the material in triaxial monotonic and cyclic compressions.

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Damage constitutive for high strength concrete in triaxial ...

The meridians of the initial damage surface are closed, They consist of three distinct zones: (1) tension zone, in which the damage threshold surface (f0 ¼ 0) nears the bounding surface, representing brittle behavior of high strength concrete; (2) tension–compression zone, in which the hardening zone gradually increases; (3) high confining ...

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Damage constitutive for high strength concrete in triaxial ...

Jul 01, 2002  The empirical failure criterion based on the four parameter model of Ottosen (1977) is valid also for high strength concrete. 2. The proposed bounding surface is able to portray the mechanism of damage in high strength concrete and therefore yields an appropriate constitutive model for the material in triaxial monotonic and cyclic compressions.

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Damage constitutive for high strength concrete in triaxial ...

A constitutive relationship for high strength concrete in triaxial monotonic and cyclic compressions is developed based on the continuum damage mechanics. The bounding surface concept is employed ...

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Mechanical Response and Damage Evolution of High-Strength ...

Oct 28, 2018  In this study, a high-strength concrete (f’ c ∼130 MPa) was investigated under triaxial loading conditions at confining pressures up to 300 MPa. Three cylindrical specimen sizes were used to determine size effects, including 50 × 114 mm, 25 × 50 mm, and 25 × 13 mm.

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Mechanics of Damage and Constitutive Relationships for ...

Dec 29, 1997  A constitutive relationship for high-strength concrete (6 to 15 ksi) is developed based on the continuum damage mechanics. The bounding surface concept was employed in the formulations of the theoretical model. A comprehensive experimental program was undertaken in order to establish a database for high-strength concrete under triaxial compression.

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HIGH-STRENGTH CONCRETE SUBJECTED TO TRIAXIAL COMPRESSION

The experimental program was comprised of testing high-strength concretes at three different compressive strength levels. The three strength levels included concretes with compressive strengths of 6 ksi (42 MPa), 10 ksi (69 MPa), and 15 ksi (103 MPa). The triaxial tests were performed on 4-by-8 in (100-by-200 mm) cylindrical specimens.

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Experimental Study of Ultra-High-Strength Concrete under ...

Jan 01, 2016  Date: 1/1/2016. Abstract: This paper presents experimental results of ultra-high-strength concrete with uniaxial strength over 200 MPa (29 ksi) subjected to triaxial compression, hydrostatic pressure, and uniaxial compression. Various confining pressures from 25 to 400 MPa (3.6 to 58 ksi) were applied in the tests to investigate the confinement ...

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Ultimate strength of plain concrete under extreme combined ...

vicinity of steel-concrete connections. High triaxial stress states in concrete structures may also be due to impacts. During the impact of a missile on a concrete target, three phases of triaxial behaviour can be observed. Each of these is associated with differ-ent damage modes which can sometimes occur simultaneously (Zukas et al., 1992);

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Fatigue Properties of Plain Concrete under Triaxial ...

Feb 21, 2017  2.2. Testing Load Patterns. Fatigue tests were performed on plain concrete subjected to constant and variable amplitude triaxial T-C-C cyclic loading, and the lateral pressure stresses are and 0.50. is the stress level of fatigue, , and is the uniaxial tensile strength of 150 mm × 150 mm × 300 mm prism. Constant amplitude fatigue of maximum stress was varied from 0.25 to 0.75, and variable ...

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Constitutive Model for the Triaxial Behavior of Concrete ...

Damage in plasticity is accounted for by developing a new formulation relating the plastic strains rate tensors in the effective and damaged configurations. Two anisotropic damage criteria are introduced to account for the different concrete behavior effects under tensile and compressive loadings.

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Experimental characterisation of mechanical behaviour of ...

Concrete structures and rock engineering projects are generally in uniaxial (principal stresses σ 1 > σ 2 = σ 3 = 0), biaxial (σ 1 ≥ σ 2 > σ 3 = 0) and triaxial (σ 1 ≥ σ 2 ≥ σ 3 ≠ 0) stress states, and also frequently subjected to dynamic loads such as earthquake, high-velocity impact, drilling blasting and explosive attacks. A series of experiments is conducted on cement ...

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Study on mechanical behavior and damage process of ...

Aug 12, 2021  Zingg et al. 6 studied the influence of cement matrix porosity on the triaxial properties of concrete under high ... while the damage pattern and ultimate strength were closely related to the ...

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1. Introduction - Hindawi

It can be seen that under triaxial compression, if the crushing damage caused by high hydrostatic pressure is ignored, the triaxial compressive strength of concrete specimens increases monotonously with the increase of lateral compressive stress σ ¯. In addition, with the increase of soaking time of specimens in sulfate solution, the slope of ...

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Mesoscale Modelling of Concretes Subjected to Triaxial ...

The failure criterion could describe the strength characteristics of concrete materials well by being fitted with experimental data under different triaxial stress states. The mechanical properties and fracture behaviour of concretes under different triaxial stress states were investigated based on

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Parameters of Holmquist–Johnson–Cook model for high ...

Chen DX (2009), "Study on Strain Rate Sensitive Constitutive Relation Containing Damage of Fiber Reinforced High Strength Concrete" Dancygier Avraham N. (2007), "Response of high performance concrete plates to impact of non-deforming projectiles" in International Journal of Impact Engineering, v. 34 n. 11, Elsevier BV, p. 1768-1779

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Mechanics of Damage and Constitutive Relationships for ...

Dec 29, 1997  A constitutive relationship for high-strength concrete (6 to 15 ksi) is developed based on the continuum damage mechanics. The bounding surface concept was employed in the formulations of the theoretical model. A comprehensive experimental program was undertaken in order to establish a database for high-strength concrete under triaxial compression.

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Plasticity Model for Concrete under Triaxial Compression ...

Jan 03, 2000  Damage-Plasticity Model for FRP-Confined Normal-Strength and High-Strength Concrete Journal of Composites for Construction May 2016 Plasticity Model for Hybrid Fiber-Reinforced Concrete under True Triaxial Compression

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Elastoplastic Damage Model for Concrete Under Triaxial ...

Nov 27, 2018  The elastoplastic damage model for concrete is elaborated that can be applied to various stress states. In the previous study (2016) the 3D elastoplastic damage model, based on the Lubliner yield criterion and Drucker–Prager flow rule, was constructed. The simplified forms of the two functions set certain limitations on the calculations in true triaxial compression and high confining ...

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Statistical Damage Constitutive Model for High-Strength ...

To study the energy evolution law and damage constitutive behavior of high-strength concrete based on the conventional triaxial compression tests of C60 and C70 high-strength concrete subjected to five different confining pressures, the failure characteristics of high-strength concrete are analyzed at different confining pressures, and the evolution of the input energy density, elastic strain ...

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(PDF) Ultimate strength of plain concrete under extreme ...

High triaxial stress states in concrete structures may also be due to impacts. During the impact of a missile on a concrete target, three phases of triaxial behaviour can be observed. Each of these is associated with different damage modes which can sometimes occur simultaneously (Zukas et

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(PDF) Ultimate strength of plain concrete under extreme ...

Influence of free water on the quasi-static and dynamic strength of concrete in confined compression tests By Pascal Forquin Strain measurements on porous concrete samples for triaxial compression and extension tests under very high

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Compression triaxial behaviorof concrete: the role of the ...

This paper is intended to assess the mesostructural damage mechanisms of concrete under hydrostatic and triaxial loadings. Such a study is possible thanks to two state-of-the-art laboratory instruments: a high-pressure triaxial press, and an X-ray computed tomography instrument. The laboratory protocol consists of scanning the

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Ultimate strength of plain concrete under extreme combined ...

vicinity of steel-concrete connections. High triaxial stress states in concrete structures may also be due to impacts. During the impact of a missile on a concrete target, three phases of triaxial behaviour can be observed. Each of these is associated with differ-ent damage modes which can sometimes occur simultaneously (Zukas et al., 1992);

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Fatigue Properties of Plain Concrete under Triaxial ...

Fatigue Properties of Plain Concrete under Triaxial ... al. [8] tested the dynamic properties of concrete materials under both high strain rates and triaxial stress states. It was pointed out that the strain rate effects on maximum ... of concrete when determining the damage variant. Steady

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Material Behavior of Ultra-High-Strength Concrete under ...

Sep 01, 2015  The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete

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Study on mechanical behavior and damage process of ...

Aug 12, 2021  Zingg et al. 6 studied the influence of cement matrix porosity on the triaxial properties of concrete under high ... while the damage pattern and ultimate strength were closely related to the ...

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Behavior of High-Strength Concrete Under Torsional ...

This effect increased as the magnitude of applied shear increased. Comparison between the results of this study under cylindrical triaxial compression with low lateral stresses for high-strength and those of other studies for normal strength concrete reveals that normal strength concrete exhibits relatively flatter post-peak behavior.

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Post-fatigue properties of high-strength concrete ...

The post-fatigue characteristics of high-strength concrete (e.g. P-wave velocity, S-wave velocity, porosity, gas permeability, triaxial compression strength, and elastic modulus) are gained. The results indicate that 3D fatigue loading weakens mechanical properties, delays

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Effect of specimen geometry on triaxial compressive ...

Abstract The triaxial compressive response of high-strength concrete is needed to understand pressure-dependent material behavior, which is important for modeling extreme loading events. However, nondestructive damage analysis and dynamic triaxial experiments require specimens that are smaller than those typically used for model calibration. Reducing the specimen diameter from 50 mm to 25

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