Influence of sintering temperature of a ceramic substrate in mortar adhesion for civil construction

Azevedo, Afonso Rangel Garcez de; França, Bruno Rangel; Alexandre, Jonas; Marvila, Markssuel Teixeira; Zanelato, Euzébio Bernabé; Xavier, Gustavo de Castro

doi:10.1016/j.jobe.2018.05.026

Cited by 54 publications

(28 citation statements)

References 23 publications

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“…The coarse particles also reduce the packing degree of the pieces, decreasing the moisture gradient inside the specimens . As expected, the shrinkage accentuates with the increase of firing temperature, as it was also reported by Azevedo et al This behavior is attributed to the vitrification process, which causes the reduction of porosity and promotes the approximation of the particles . The specimens of all the mixtures presented linear firing shrinkage within the limit (≤6%) stipulated by Santos…”

Section: Resultssupporting

confidence: 84%

Study of mixtures using simplex design for the addition of chamotte in clay bricks

Medeiros

Pedroti

Mendes

et al. 2019

Int J Applied Ceramic Tech

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The red clay ceramic industry is associated with several environmental damages, from the extraction of natural resources as raw materials to the generation of high amounts of waste. This study proposed the incorporation of the ceramic bricks waste (chamotte) in ceramic mixtures for the production of clay bricks. In order to define the greater content of chamotte, which can be added maintaining the technical qualities required for the product, the experimental design of mixtures was used, with the production of bricks containing the chamotte and two other clayey materials. The compositions were subjected to firing at 850, 950, and 1050°C. The properties of firing linear shrinkage, apparent specific mass, water absorption, apparent porosity, and axial compressive strength were evaluated. It was observed that chamotte (C) contributed to the improvement of some of these properties, such as linear shrinkage.Overlapping the response surfaces obtained in the statistical analysis, the optimal chamotte (C) content was determined for each firing temperature. It was concluded that the incorporation of up to 30% chamotte (C) is technically feasible considering the evaluated temperature range. In this way, there is a product that adds both sustainability and technical performance to the ceramic industry. K E Y W O R D Schamotte, ceramic engineering, characterization, mechanical properties 2350 |

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Section: Resultssupporting

confidence: 84%

Study of mixtures using simplex design for the addition of chamotte in clay bricks

Medeiros

Pedroti

Mendes

et al. 2019

Int J Applied Ceramic Tech

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“…Another function of great importance, which is investigated more specifically in this study, is the capacity to accommodate or receive the loads and to allow the deformations to occur without the appearance of internal tensions that would provoke the appearance of cracks. In this way, it can be considered that the mortar acts as a dilatation joint, which relieves the internal stresses of the material [18].…”

Section: Introductionmentioning

confidence: 99%

Analysis of deformability modulus by linear and nonlinear elastic methods in ceramic structural masonry and mortars

Cerqueira¹,

Marvila²,

Azevedo³

et al. 2020

Cerâmica

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There are studies analyzing the parameters of structural masonry strength, however few are performed evaluating the interference of the mortar in the deformability parameters. The objective of this study was to verify the theories of elasticity (Hooke’s linear model and nonlinear models by Ghosh, Duffing, and Martin, Roth, and Stiehler) applied to structural masonry. Ceramic blocks were pressed and fired at 890 ºC and mortars prepared with the proportion 1:1:5:0.5:2 of cement: hydrated lime: sand: PVA binder: water. The materials were tested in compression individually and in prisms with and without the use of mortars. The results obtained with the linear elastic analysis were incoherent since the deformability modulus obtained for the mortar prisms was higher than those without mortar. Performing the analysis by nonlinear theories, it was found that the results obtained were more coherent, mainly by Duffing’s theory that uses one parameter for stiffness and another for damping of the material.

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“…Taking red ceramic, known as substrates, as an example, the results indicate that firing temperature is a variable that directly influences the adhesive properties. Bricks burned at 950 °C provided a greater gain in resistance to the adhesion of traction due to the high initial absorption index compared with other bricks fired at lower temperatures [2]. Zanelato et al indicated that the adoption of the intermediary adhesion mechanisms between the ceramic substrate and the mortar, referred to as "Roughcast", significantly increased the tensile bond strength, and altered the type of rupture seen in their tests [24].…”

Section: Introductionmentioning

confidence: 99%

Estimation of the Adherence of Mortars Using Ultrasound

Khaldi

Belachia

Benouis

2020

Civil and Environmental Engineering Reports

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Mortars are subjected to severe external stresses such as freezing, thawing, and drying during their lifetime. These stresses can lead to a loss of adhesion between the support and the mortar. The strength of the substrates with respect to their ability to receive a coating (mortar) is characterized in particular by the value of minimum tear resistance of the surface to be coated. In this work, the use of a non-destructive method which is both fast and easy to implement is employed to evaluate this support-mortar adhesion. The first method is based on the measurement of the velocities of the surface ultrasonic waves and the second by tearing tests using a specific dynamometer. The determination of the adhesion strength concerned two different supports (concrete beam and masonry block) coated with two types of mortar (a prepared cement mortar and a ready-to-use mortar) with two different thicknesses for each mortar (1 and 2 cm, respectively). The results of the two methods are then correlated for an estimation of the adhesion of the mortars.

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Influence of sintering temperature of a ceramic substrate in mortar adhesion for civil construction

Cited by 54 publications

References 23 publications

Study of mixtures using simplex design for the addition of chamotte in clay bricks

Study of mixtures using simplex design for the addition of chamotte in clay bricks

Analysis of deformability modulus by linear and nonlinear elastic methods in ceramic structural masonry and mortars

Estimation of the Adherence of Mortars Using Ultrasound

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