Compression Behavior and Failure Mechanisms of Concrete Masonry Prisms

Koksal, Hasan; Karakoç, Cengiz; Yildirim, Hakkı

doi:10.1061/(asce)0899-1561(2005)17:1(107)

Cited by 47 publications

(12 citation statements)

References 14 publications

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“…In order to better understand the behaviour of tested masonry prisms secant elastic modulus and compressive fracture energy were calculated for all specimens. In Table 2 a Similarly to results available in literature (Page and Shrive, 1988;Cunha et al, 2001, Steil et al, 2001, Köksal et al, 2005, it is seen that the mortar had a small influence in the compressive strength of the masonry prisms, even if it is seen that a trend for the decrease of the compressive strength of mortar result in decrease on the compressive strength of masonry prisms. However, the increase of about 250% on the compressive strength of mortar leads to an increase on compressive strength of about 35% for both unfilled and filled masonry prisms.…”

Section: Behaviour Of Masonry In Terms Of Strength and Vertical Deforsupporting

confidence: 70%

Assessment of Compressive Behavior of Concrete Masonry Prisms Partially Filled by General Mortar

Haach

Vasconcelos

Lourenço

2014

J. Mater. Civ. Eng.

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The usage of general mortar for embedding and partially filling of units in masonry prisms is evaluated through compressive tests. Filled and unfilled prisms were tested in order to verify the differences on their compressive behavior. Four mortar mixes with three water/cement ratios for each mix were used in tests. Results indicated small differences between filled and unfilled masonry prisms. Mortar had a small influence in the compressive strength of the masonry. However, a more significant influence could be observed on secant elastic modulus, compressive fracture energy and deformations of masonry prisms. Besides, an analytical model to represent the stress vs. strain diagram of masonry prisms is proposed. The analytical model depends on the compressive strength of mortar and masonry prism. Furthermore, results indicated that the usage of general mortar for embedding and filling masonry prisms can be a solution in terms of building technology.

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Section: Behaviour Of Masonry In Terms Of Strength and Vertical Deforsupporting

confidence: 70%

Assessment of Compressive Behavior of Concrete Masonry Prisms Partially Filled by General Mortar

Haach

Vasconcelos

Lourenço

2014

J. Mater. Civ. Eng.

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“…Only a few numerical researches have been carried out with respect to the strength prediction of hollow concrete block masonry (e.g., Page and Shrive 1990;SayedAhmed and Shrive 1996;Koksal et al 2005) and, even if grouted masonry is usually considered, the material properties are not always fully available from testing and it is not always demonstrated that the ultimate load is the true one, and not the result of divergence of the numerical solution procedure. In this research program, the numerical analysis is based on continuum finite elements utilizing a commercial non-linear finite element code DIANA (DIANA 2005).…”

Section: Introductionmentioning

confidence: 99%

On the compressive strength prediction for concrete masonry prisms

2009

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The results of a combined experimental program and numerical modeling program to evaluate the behavior of ungrouted hollow concrete blocks prisms under uniaxial compression are addressed. In the numerical program, three distinct approaches have been considered using a continuum model with a smeared approach, namely plane-stress, plane-strain and threedimensional conditions. The response of the numerical simulations is compared with experimental data of masonry prisms using concrete blocks specifically designed for this purpose. The elastic and inelastic parameters were acquired from laboratory tests on concrete and mortar samples that constitute the blocks and the bed joint of the prisms. The results from the numerical simulations are discussed with respect to the ability to reproduce the global response of the experimental tests, and with respect to the failure behavior obtained. Good agreement between experimental and numerical results was found for the peak load and for the failure mode using the three-dimensional model, on four different sets of block/mortar types. Less good agreement was found for plain stress and plain strain models.

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“…Detailed micro-modeling should describe the masonry, mortar, and the interaction behavior between them [22,[36][37][38]. Köksal et al [1,8,9] have performed FE analysis of masonry prisms and columns strengthened with FRP describing the constitutive behavior of the unit, mortar, and FRP separately. The similar approach has been adopted for the FE modeling of masonry shear walls while making the assumption that the material description of the mortar includes the effect of the unit-mortar interface behavior.…”

Section: The Mechanics Of Constitutive Modelingmentioning

confidence: 99%

“…A large literature has grown up which extends analytical and numerical models applied to masonry structures. These models involve mechanical parameters that are difficult to measure and cannot be implemented practically into numerical analyses [2][3][4][5][6][7][8][9][10][11][12][13]. Researchers related to detailed micro-, simplified micro-and macro-FE modeling of masonry walls subjected to compression and shear have initially taken similar steps in the modeling process for masonry prisms and columns under concentric loading.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers related to detailed micro-, simplified micro-and macro-FE modeling of masonry walls subjected to compression and shear have initially taken similar steps in the modeling process for masonry prisms and columns under concentric loading. Proceeding in a similar way with that used for the RC members [8,9,11,12] employed a general-purpose finite element program LUSAS [14] for modeling the unreinforced and reinforced masonry prisms and columns activating both the elasto-plastic and isotropic damage models to reflect the nonlinear behavior of the blocks, grout, and mortar joints. Masonry walls were assumed as isotropic and elastic ignoring the influence of mortar joints acting as planes of weakness.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Constitutive Modeling of Masonry Walls Strengthened with Fiber Reinforced Polymers

Doran¹,

Koksal²,

Aktan³

et al. 2018

New Trends in Structural Engineering

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This study primarily focuses on the constitutive modeling of masonry walls strengthened with fiber-reinforced polymers (FRP). In general, providing suitable relations for the material characterization of the masonry constituents so that the nonlinear finite element (NLFEA) applications of the elasto-plastic theory achieves a close fit to the experimental load-displacement diagrams of the walls subjected to in-plane loadings is desired. In this chapter, two relations proposed for masonry columns confined with FRP are adjusted for the cohesion and the internal friction angle of both units and mortar. Relating the mechanical parameters to the uniaxial compression strength and the hydrostatic pressure acting over the wall surface, the effects of major and intermediate principal stresses σ 1 and σ 2 on the yielding and the shape of the deviatoric section are then reflected into the analyses. Finally, NLFEA results for the walls tested in different studies showed a good match with the experimental ones.

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Compression Behavior and Failure Mechanisms of Concrete Masonry Prisms

Cited by 47 publications

References 14 publications

Assessment of Compressive Behavior of Concrete Masonry Prisms Partially Filled by General Mortar

Assessment of Compressive Behavior of Concrete Masonry Prisms Partially Filled by General Mortar

On the compressive strength prediction for concrete masonry prisms

Constitutive Modeling of Masonry Walls Strengthened with Fiber Reinforced Polymers

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