Mechanical properties of load bearing walls made of uruguayan hollow ceramic bricks

Cabezas, Juan José

doi:10.4067/s0718-915x2015000300002

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Cabezas [26] highlighted a clear difference in mechanical behavior between horizontally perforated bricks and vertically perforated ones. Vertically oriented holes increase the compressive strength of the component by 5-10 times compared to the horizontal holes-based design.…”

Section: Solution and Resultsmentioning

confidence: 99%

Multi-Physics Analysis for Rubber-Cement Applications in Building and Architectural Fields: A Preliminary Analysis

et al. 2020

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Generally, in most countries, there are no strict regulations regarding tire disposal. Hence, tires end up thrown in seas and lands as well as being burnt, harming the living beings, and are therefore considered a very dangerous pollution source for the environment. Over the past few years, several researchers have worked on incorporating shredded/powdered rubber tires into cement-based material. This strategy shows a dual functionality: Economic–environmental benefits and technological functionalization of the building material. Rubber-modified cement materials show interesting engineering and architectural properties due to the physical-chemical nature of the tire rubber aggregates. However, the abovementioned performances are affected by type, size, and content of polymer particles used in the cement-based mixtures production. Whereas an increase in the rubber content in the cement mix will negatively affect the mechanical properties of the material as a decrease in its compression strength. This aspect is crucial for the use of the material in building applications, where proper structural integrity must be guaranteed. In this context, the development of innovative manufacturing technologies and the use of multi-physics simulation software represent useful approaches for the study of shapes and geometries designed to maximize the technological properties of the material. After an overview on the performances of 3D printable rubber-cement mixtures developed in our research laboratory, a preliminary experimental Finite Element Method (FEM) analysis will be described. The modeling work aims to highlight how the topology optimization allows maximizing of the physical-mechanical performances of a standard rubber-cement component for building-architectural applications.

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Section: Solution and Resultsmentioning

confidence: 99%

Multi-Physics Analysis for Rubber-Cement Applications in Building and Architectural Fields: A Preliminary Analysis

et al. 2020

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“…In literature it is possible to find several equations that relate masonry strength (RM), mortar strength (Rm) and brick strength (Rl), as the Graf equation (Fontana Cabezas, 2015):…”

Section: (A) (B)mentioning

confidence: 99%

Compression behaviour of clay bricks prisms, wallets and walls - Coating influence

Azevedo

Guimarães

Silva

et al. 2019

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This work describes an experimental study carried out on running bond 195 red clay prisms, of two and three ceramic blocks, with and without cement mortar coating and some samples reinforced with mesh, subjected to axial compression in order to enhance the capacity of masonry. The prisms were subjected to compressive loading and all of them had deformation control on each face with a deflectometer, to obtain information about the structural behaviour of the prisms. The experimental results indicate an increase both in the compressive load capacity of the coated prisms and in those that use coatings based on reinforced mortar, not complying with the specifications of conventional structural mortar. The load ratios of prism/wallettes and prisms with two blocks/prisms with three blocks were satisfactory.

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Influence of Reinforced Mortar Coatings on the Compressive Strength of Masonry Prisms

Delgado¹,

Guimarães²,

Azevedo³

et al. 2018

Structural Performance of Masonry Elements

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This work describes an experimental study carried out on running bond 195 red clay prisms, of two and three ceramic blocks, with and without cement mortar coating, subjected to axial compression in order to enhance the capacity of masonry. The prisms were subjected to compressive loading and all of them had deformation control on each face with a deflectometer, in order to obtain information about the behaviour of the prisms.Experimental tests with red clay prisms were performed in the Laboratory of Construction Materials of Catholic University of Pernambuco, Brazil. The red clay brick blocks used had dimensions of 91 × 191 × 190 mm 3 (with a tolerance of ±3 mm) and an average density of 2620 kg/m 3 . Overall, a total of 195 prisms were built and tested (see Table 3.1). All the applicable ASTM standards or Brazilian standards (NBR) were followed in the building, curing, capping, and testing of the prisms and the components.In order to perform the mechanical deflectometer readings, 400 L-shaped metallic plates, with 6 cm high and 2 cm wide, were fabricated (see Fig. 3.1), which were used as a support base for the deflectometers. The metallic plates were fixed to the prisms, previously, in the middle third of their length, through bonding, at a distance sufficient to allow the free flow of the deflectometers, as seen in Fig. 3.1a.The hydraulic jacks had 200 mm piston stroke and 50-ton load capacity. This allowed only one jack to be sufficient to apply the load required for rupture of the prisms. The load drive machine, controlled by software which allows a perfect control of both displacement increment and load increase, has a servo-hydraulic working system and it is connected to the linear displacement sensors (LVDT). The displacement control of the hydraulic jacks makes it possible not only to follow the post-cracking and post-rupture, but also the shape of the rehab curve of the samples in front of the maintenance or increase of displacement.

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Mechanical properties of load bearing walls made of uruguayan hollow ceramic bricks

Cited by 4 publications

References 8 publications

Multi-Physics Analysis for Rubber-Cement Applications in Building and Architectural Fields: A Preliminary Analysis

Multi-Physics Analysis for Rubber-Cement Applications in Building and Architectural Fields: A Preliminary Analysis

Compression behaviour of clay bricks prisms, wallets and walls - Coating influence

Influence of Reinforced Mortar Coatings on the Compressive Strength of Masonry Prisms

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