فهرست مقالات Porcelain

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  1 - Determination of the Geological Conditions During the Formation of Kaolinite and Bentonite Deposits in NW Alborz Mountains (Pirkoh-Deylaman) of Iran and the Study of Its Practical Properties for Use in the Porcelain Industry
  Farzad Asadi Ali Darvishzadeh Ali Montezeri
  The area under study is located in northern Iran at 36° 47’ latitude and 50° 12' longitude. It is 15 km from southeastern Deylaman. Petrological study of the kaolin mother rock (Eocene age) under a microscope shows that the rock is vitric tuff with a rhyol چکیده کامل

  The area under study is located in northern Iran at 36° 47’ latitude and 50° 12' longitude. It is 15 km from southeastern Deylaman. Petrological study of the kaolin mother rock (Eocene age) under a microscope shows that the rock is vitric tuff with a rhyolitic combination containing falcated and embowed glass shards. The thickness of the layer is approximately 20 meters, formed unconformably on a layer of conglomerate with a thickness of approximately 400 meters. Because the shards have a falcated and embowed shape and the percentage of reworked material within them is low, the tuff can be considered a type of pyroclastic airfall. The results of the study prove that ash falling occurred in the water. The stratabound layers show syngenetic deposits to be the main factor in the formation of the clay, bound as a result of alterations. پرونده مقاله
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  2 - Effect of Quartz Particle Size on Sintering Behavior and Flexural Strength of Porcelain Tiles Made from Raw Materials in Uganda
  Ochen William Florence D'ujanga Bosco Oruru
  The presence of quartz particle size (> 45 µm) has a deleterious effect on the properties of porcelain tiles. The effect is caused by many factors including microstructure (pore) evolution after sintering. This study aims at investigating the effect of quartz p چکیده کامل

  The presence of quartz particle size (> 45 µm) has a deleterious effect on the properties of porcelain tiles. The effect is caused by many factors including microstructure (pore) evolution after sintering. This study aims at investigating the effect of quartz particle size (QPS) on sintering behavior and flexural strength of porcelain tiles made from raw materials in Uganda. The samples were pressed at 40 MPa, fired from 1150-1350 0C at a firing rate of 60 0C/min, and soaked for 1 hour. The sintering behavior was analyzed based on linear shrinkage, water absorption and Scanning Electron Microscope (SEM) micrographs. Phase identification was carried out using X-ray diffraction method. The optimal sintering temperature of 1300 0C was established, and firing to 1350 0C resulted in bloating as observed by SEM. Samples containing fine and medium QPS had a value of 0.47 % and 0.90 % water absorption respectively at optimum temperature. Pressed tiles with and those > water absorption are classified as Group BIa and BIb respectively (ISO 13006), suitable for use as floor or wall tiles. Also, the average flexural strength of 33, 18 and 8 MPa was exhibited by samples with fine, medium and coarse QPS respectively. The results indicate that only samples with fine and medium QPS satisfy the requirement MPa and > 12 MPa for floor and wall tiles respectively (ISO 13006). پرونده مقاله
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  3 - Combined Porcelain Ceramic and Recycled Concrete Aggregates Used as Replacement for Coarse Aggregates in Concrete
  Sayed Behzad Talaeitaba Maedeh Dehghani
  10.1007/ijase.2023.1972233.1061
  The increasing production of construction waste on the one hand and the use of concrete as a widely used material in the construction industry, on the other hand, has always led researchers to reuse construction waste in concrete. Among the recycled materials that can b چکیده کامل

  The increasing production of construction waste on the one hand and the use of concrete as a widely used material in the construction industry, on the other hand, has always led researchers to reuse construction waste in concrete. Among the recycled materials that can be used in concrete, we can mention porcelain ceramic and recycled concrete. In the present study, these two types of recycled aggregates (recycled porcelain ceramics and recycled concrete) alone and together in different percentages of 20%, 40%, and 60% are used as the replacement of coarse aggregates in concrete with a strength of more than 50 MPa and high flowability. Slump test, compressive and flexural strength, water absorption, and water penetration tests have been performed on 150 samples made in 10 mixing designs along with an SEM test. The results showed that all the mixing designs had slumps of more than 180 mm. The compressive strength of the control sample averaged 60 MPa and the samples containing recycled aggregates averaged 68 MPa. Also, by combining two types of recycled aggregates, both the 7-day and 28-day strength increased with increasing replacement percentage with a linear trend. The highest increase was 28% for porcelain aggregates and 17% for combined recycled aggregates. In addition, the water penetration rate in the samples containing the combined recycled aggregates showed a significant decrease compared to the control sample. In the SEM test, it was observed that the samples containing the combined aggregates had a thicker and denser matrix. پرونده مقاله