Influence of joint thickness and strength of mortars on the compressive behavior of prisms made of normal and high-strength concrete blocks

Caldeira, Filipe Emerick; Nalon, Gustavo Henrique; Oliveira, Diego Sales de; Pedroti, Leonardo Gonçalves; Ribeiro, José Carlos Lopes; Ferreira, Flávio Antônio

doi:10.1016/j.conbuildmat.2019.117419

Cited by 21 publications

(4 citation statements)

References 18 publications

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“…Calderon et al [71] propose a value of 580, while Wang et al [94] consider the average of the recommendations from [101] and use a value of 900. Caldeira et al [13], based on the collected data, state that the range of values found in the literature is too dispersed to draw conclusive general trends. Table 4 provides a summary of the recommended values found in the literature.…”

Section: Relationship Between Elastic Modulus and The Masonry Compres...mentioning

confidence: 99%

“…Table 4 provides a summary of the recommended values found in the literature. E w = 550 f wv [97] E w = 1000 f wv [102] E w = 500 f wv [98] E w = 850 f wv [71] E w = 580 f wv [99] E w = 700 f wv [13] E w = 474.5 f wv [104][105] E w = 750 f wv [103] E w = 1180 f wv 0.83 [72] E w = 600 f wv [94] E w = 900 f wv [106] E w = 800 f wv Based on the collected tests, only 157 tests evaluated masonry stiffness, speci cally 47 wallette tests and 110 prism tests. Through statistical analysis, it was found that wallette tests yielded an average stiffness value of E w = 1080 f wv (Cov = 75.66%).…”

Section: Relationship Between Elastic Modulus and The Masonry Compres...mentioning

confidence: 99%

“…Many studies have been conducted on the compressive strength of masonry ; authors such as Monteagudo et al [10] and Uday & Reddy [11] have shown, using experimental study and nite element analysis, the detrimental in uence of increasing the thickness of bedding joints for masonry, Thamboo et al [12] reported an increase in the compressive strength of masonry with the reduction of bed joint thickness, especially for joint thicknesses less than 4mm. Caldeira et al [13] found that joint thickness has a signi cant in uence on the compressive strength of masonry only with units with su ciently high strength. In the second case, increasing the joint thickness was found to signi cantly decrease the strength of the masonry.…”

Section: Introductionmentioning

confidence: 99%

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Multivariate regression analysis to strength and stiffness evaluation of masonry infills

Messas

Adjrad

Benyahi

et al. 2023

Preprint

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Reinforced concrete frames with masonry infill are widely utilized in construction worldwide. This present study aimed to investigate the behaviour of masonry infill. Firstly, the compressive strength of the masonry infill and the evaluation methods were examined, specifically prism tests and wallette tests. The study collected a substantial database, revealing that wallette tests indicate higher stiffness compared to prism tests. Based on the findings, it is recommended to employ prism tests for assessing the stiffness of masonry and wallette tests for evaluating the compressive strength of masonry. Furthermore, the study assessed the performance of 18 empirical models to identify the most suitable model for predicting the compressive strength of masonry using the two testing methods (wallette and prism). To evaluate the strength of masonry infills under horizontal loading, a database of reinforced concrete frames with masonry infills was collected. The infill responses were determined by calculating the differences between the infilled frame and the bare frame. By employing multivariate regression analysis, equations were proposed for the various parameters of the quadri-linear relationship governing the behaviour of masonry infill. A comparison of the equations proposed in this present study with those present in the literature demonstrated their reliability.

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Section: Relationship Between Elastic Modulus and The Masonry Compres...mentioning

confidence: 99%

Section: Relationship Between Elastic Modulus and The Masonry Compres...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multivariate regression analysis to strength and stiffness evaluation of masonry infills

Messas

Adjrad

Benyahi

et al. 2023

Preprint

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“…Some of these expressions are linear [20,21] or polynomials [22] and consider only the strength of the block and the mortar. Most of these analytical models can thus be expressed in the following form: Many other authors have proposed similar formulas for various materials [32][33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

An Empirical Formula for Assessing the Characteristic Strength of Unreinforced Laterite Stone Masonry

Seini Moussa,

Djoubissié Denouwé,

Lawane

et al. 2024

Civ Eng J

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This study aims to determine the needed coefficients for evaluating the uniaxial compressive strength characteristic value for masonry structures made of Laterite Stone (LS) and cement mortar, resulting from experiments conducted in the laboratory evaluating the compressive strengths of the laterite stone and mortar separately in masonry. It proposes calculation coefficients for the completion of Eurocode 6 data that fit the behavior of laterite stone-based masonry. The laterite stone blocks are extracted from three quarries in southern Burkina Faso. The dimensions of the masonry samples tested are 800 mm × 800 mm × 135 mm (±5 mm) with a cement mortar joint of 20 mm (±5 mm) thick. The different failure modes of masonry were also explored. The tests carried out on the masonry showed that the failure is initiated by vertical cracks through the block-mortar interface at a quarter of the width of the walls, generally at 40 to 60% of their maximum strength. The statistical analysis made through a linear regression from the standard model of approximation of the characteristic strength of masonry in Eurocode 6 was used to set out parameters for the empirical relation. The proposed formula considers the intrinsic properties of the block and the mortar, the thickness of the mortar, the dimensions of the masonry block, and the geometry of the masonry itself to evaluate its compression strength. The adequacy between the model and the experimental values is evaluated through the coefficient of determination and the standard error of 0.94 and 0.041 MPa, respectively. Doi: 10.28991/CEJ-2024-010-04-07 Full Text: PDF

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Validation of a Hemi-Variational Block-Based Approach to the Modelling of Common In-plane Failures in Masonry Structures

Espino

Sandoval

Tran

et al. 2023

Advanced Structured Materials

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Influence of joint thickness and strength of mortars on the compressive behavior of prisms made of normal and high-strength concrete blocks

Cited by 21 publications

References 18 publications

Multivariate regression analysis to strength and stiffness evaluation of masonry infills

Multivariate regression analysis to strength and stiffness evaluation of masonry infills

An Empirical Formula for Assessing the Characteristic Strength of Unreinforced Laterite Stone Masonry

Validation of a Hemi-Variational Block-Based Approach to the Modelling of Common In-plane Failures in Masonry Structures

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