Frost Resistant Ceramics Produced from Local Raw Materials and Wastes

Malaiškienė, Jurgita; Mačiulaitis, Romualdas

doi:10.1016/j.proeng.2013.04.093

Cited by 13 publications

(8 citation statements)

References 15 publications

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“…Some conclusions about the resistance of bricks to freezing/thawing cycles can already be made on the basis of their mineralogical or chemical composition. Thus clays with a smaller proportion of CaCO 3 in their mineralogical composition will enable greater resistance to freezing/thawing cycles [20]. If the resistance is estimated according to chemical composition, then better resistance will be enabled by clays with a smaller CaO content [21].…”

Section: Influence Of Raw Materialsmentioning

confidence: 99%

Evaluation of brick resistance to freeze/thaw cycles according to indirect procedures

Netinger

Vračević²,

Ranogajec

et al. 2014

JCE

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The brick resistance was tested in the paper by direct method, and according to some indirect procedures presented in international literature and regulations. Requirements for indirect estimation of brick resistance to freeze / thaw cycles set by Canadian and U.S. standards have proven to be inapplicable, and the same applies to estimation based on pore structure. A connection between absorption/ desorption of water and brick resistance to freeze/thaw cycles was observed.

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Section: Influence Of Raw Materialsmentioning

confidence: 99%

Evaluation of brick resistance to freeze/thaw cycles according to indirect procedures

Netinger

Vračević²,

Ranogajec

et al. 2014

JCE

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“…According to the source [13], the frost resistance of ceramics is significantly influenced by the mechanical properties of the material, allowing ceramics to resist internal stress. The results of the influence on the frost resistance of the composition of the ceramic mass, strength, density, porosity and firing temperature are shown.…”

Section: Issn 2664-9969mentioning

confidence: 99%

Influence of forming pressure on frost resistance of ceramics

Subota

Spasonova

Sholom

2021

TAPR

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The object of research is low-melting clays of the Kyiv region (Ukraine). The work is devoted to the study of obtaining ceramic materials resistant to low temperatures. Frost resistance is one of the most important characteristics for regions in which ceramic materials are used with frequent temperature transitions through 0 °C. The production of frost-resistant ceramic wall materials is determined by the type of raw materials and technological production parameters. The main technological methods for increasing frost resistance are: the use of less dispersed clays; batch homogenization; formation of raw material without textural defects and prevention of cracks during drying and firing. The work shows that the existing methods for increasing frost resistance can be implemented by reducing water absorption due to the creation of a microporous structure with predominantly closed pores by increased pressure of a semi-dry method of formation. An increase in the pressing pressure leads to an increase in the number of contacts of the molecules of the ceramic mass at the stage of formation. Due to this, the strength of the molded samples at a pressing pressure of more than 30 MPa is higher compared to samples molded by the plastic method. It was also found that an increase in the pressing pressure makes it possible to speed up the drying process of ceramic products, reducing energy consumption for their production. Due to an increase in the pressing pressure to 50 MPa, the strength of samples obtained by semi-dry pressing is 55.4 MPa, while for samples during plastic formation it is 22.9 MPa. Water absorption, on the contrary, for dry pressing is 9.3 %, while for plastic pressing it is 12.2 % at a firing temperature of 1000 °C. It is shown that increasing the pressing pressure is an effective way to improve the quality of ceramic materials based on local low-plasticity clay raw materials. Saving natural and energy resources, developing new sources of raw materials and comprehensive improvement of products with environmental friendliness of production remain important today.

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“…Throughout history, clay-based ceramics have had, and still find, numerous applications for buildings and crafts, from bricks and tiles to water pipes and pottery [9,10]. Despite the extensive use of claybased ceramics, studies on the effects that freeze-thaw weathering on these materials are limited, although long-term exposure to the atmospheric environment can damage the ceramic materials, threatening buildings as well as sites and artefacts of historical importance [11][12][13][14]. Therefore, understanding and predicting ceramics fracturing behaviour is crucial for their preservation and conservation.…”

Section: Introductionmentioning

confidence: 99%

Investigating the evolution of fractures in clay–based ceramics during repeated freeze-thawing cycles using X-ray micro-computed tomography and image analysis

Porfido

Rizzo

Healy

et al. 2021

Materials Characterization

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This work presents a study on the fracturing behaviour of a quartz tempered clay-based ceramic subjected to damage in freeze-thaw cycles. X-ray micro-computed tomography (micro-CT) provided high-resolution imaging of the ceramic before and during the freeze-thaw treatment, allowing to analyse a fully water-saturated sample using a special thermal stage designed to keep the sample frozen during analyses. Micro-CT 3D renderings showed the internal features of the specimen (i.e., quartz grain distribution), the increment of fracture count and size, and the detachment of ceramic and/or temper fragments from the edges of the sample over the cycles. Selected 2D micrographs, before and after freeze-thawing treatment, were analysed using the MATLAB toolbox FracPaQ. This software provided detailed data on fracture length, intensity, density, orientation and connectivity, and enabled to interpret the process of fracture initiation and propagation inside the material. These results showed that the temper plays a crucial role in ceramic fracturing behaviour under freezethawing conditions, as damage propagation is influenced by quartz grain distribution and orientation within the material. The study described in this work, not only offers new insights into the fracture dynamics of freeze-thawed clay-based ceramics, but also presents a new methodological approach to quantitatively measure fracture damage in porous materials.

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Frost Resistant Ceramics Produced from Local Raw Materials and Wastes

Cited by 13 publications

References 15 publications

Evaluation of brick resistance to freeze/thaw cycles according to indirect procedures

Evaluation of brick resistance to freeze/thaw cycles according to indirect procedures

Influence of forming pressure on frost resistance of ceramics

Investigating the evolution of fractures in clay–based ceramics during repeated freeze-thawing cycles using X-ray micro-computed tomography and image analysis

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