Experimental investigation of the effect of coarse aggregate shape and composition on concrete triaxial behavior

Piotrowska, Ewa; Malécot, Y.; Ke, Yu

doi:10.1016/j.mechmat.2014.08.002

Cited by 62 publications

(21 citation statements)

References 20 publications

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“…To improve this PRM model, the curve depicting the volumetric behavior of concrete is not assumed to be bijective; instead, it is assumed to be bounded by both the hydrostatic and oedometric curves (Figure 12). According to test results [2][3][4][5][6][7][8][9], it is indeed assumed that maximum compaction is obtained under an oedometric loading path. Under uniaxial strain conditions, concrete compaction is maximized because dilatancy is being prevented, whereas the hydrostatic loading path yields a lower compaction.…”

Section: Influence Of the Deviatoric Stress On Volumetric Behaviormentioning

confidence: 99%

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Influence of the Saturation Ratio on Concrete Behavior under Triaxial Compressive Loading

Briffaut

Malécot

et al. 2015

Science and Technology of Nuclear Installations

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When a concrete structure is subjected to an impact, the material is subjected to high triaxial compressive stresses. Furthermore, the water saturation ratio in massive concrete structures may reach nearly 100% at the core, whereas the material dries quickly on the skin. The impact response of a massive concrete wall may thus depend on the state of water saturation in the material. This paper presents some triaxial tests performed at a maximum confining pressure of 600 MPa on concrete representative of a nuclear power plant containment building. Experimental results show the concrete constitutive behavior and its dependence on the water saturation ratio. It is observed that as the degree of saturation increases, a decrease in the volumetric strains as well as in the shear strength is observed. The coupled PRM constitutive model does not accurately reproduce the response of concrete specimens observed during the test. The differences between experimental and numerical results can be explained by both the influence of the saturation state of concrete and the effect of deviatoric stresses, which are not accurately taken into account. The PRM model was modified in order to improve the numerical prediction of concrete behavior under high stresses at various saturation states.

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Section: Influence Of the Deviatoric Stress On Volumetric Behaviormentioning

confidence: 99%

“…The high-capacity triaxial press GIGA allows testing of concrete samples under various loading paths and concrete compositions [2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Saturation Ratio on Concrete Behavior under Triaxial Compressive Loading

Briffaut

Malécot

et al. 2015

Science and Technology of Nuclear Installations

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“…Its mechanical properties are influenced by the aggregate shapes to a certain extent. Piotrowska et al (2014) pointed out the influence of coarse aggregate types on concrete behavior under high triaxial compression loading condition and Shigang et al (2013) confirmed that the aggregate geometrical shapes has great effect on the failure behavior of the polyurethane polymer concrete (PPC) under tension. Rocco and Elices (2009) also explored the influence of aggregate shapes on the fracture energy, tensile strength and elastic modulus in concrete.…”

Section: Generation and Replacement Of Irregular Aggregate Particlesmentioning

confidence: 88%

Simulating Tensile and Compressive Failure Process of Concrete with a User-defined Bonded-Particle Model

Ren

Tian

2018

Int J Concr Struct Mater

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A user-defined bonded-particle model (UBM) which is based on the modified parallel bond was established in this paper to investigate the tensile and compressive failure mechanism of concrete on the three-dimensional (3D) level. The contact constitutive relation and the failure criterion of the UBM can be added to the commercial discrete element software PFC 3D by compiling them as a dynamic link library file and loading it into PFC 3D whenever needed. In addition, the aggregate particles can be generated according to the volume fraction and the shape of each aggregate is irregular. Then, by comparing the results of numerical simulation with the results of laboratory tests, it is found that this bonded-particle model can simulate the tensile and compressive failure process of concrete well to a certain extent. Specifically, the two have basically similar failure patterns and stress-strain responses no matter under tension or compression loading condition. All results indicate that this UBM is a promising tool in understanding and predicting the tensile and compressive failure process of concrete. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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“…This was expected because unlike limestone aggregate which is irregular in geometry, the composite aggregate pieces were rectangular prisms. This geometry is thought to have caused a lower compressive strength since irregularly-shaped coarse aggregates slightly increase the strength generated at the aggregate/mortar interface [36]. A solution to this issue may be found in irregularly-shaped geometry with increased surface roughness on smooth edges of the composite material.…”

Section: % Humidity Roommentioning

confidence: 99%

Recycling wind turbine blade composite material as aggregate in concrete

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Experimental investigation of the effect of coarse aggregate shape and composition on concrete triaxial behavior

Cited by 62 publications

References 20 publications

Influence of the Saturation Ratio on Concrete Behavior under Triaxial Compressive Loading

Influence of the Saturation Ratio on Concrete Behavior under Triaxial Compressive Loading

Simulating Tensile and Compressive Failure Process of Concrete with a User-defined Bonded-Particle Model

Recycling wind turbine blade composite material as aggregate in concrete

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