Characteristics of porous ceramics prepared from sandblasting waste and waste diatomite by co‐sintering process

Ho, Chih-Husan; Lo, Huang‐Mu; Lin, Kae‐Long; Lan, Ju‐Ying

doi:10.1002/ep.12942

Cited by 6 publications

(7 citation statements)

References 28 publications

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“…When the starch content increased from 0 wt.% to 40 wt.%, the apparent porosity increased from 46.54 wt.% to 59.28 wt.%. These findings are consistent with those of other authors, as reported in their studies [6,13,29]. This is corroborated by analyzing the SEM microphotographs in Figure 6.…”

Section: Discussionsupporting

confidence: 93%

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Ceramic Thermal Insulator Based on Diatomite Obtained by Starch Consolidation Casting

2023

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Researchers are continuously seeking to develop new materials to protect against inclement weather and thus optimize energy efficiency in housing. This research aimed to determine the influence of corn starch percentage on the physicomechanical and microstructural properties of a diatomite-based porous ceramic. The starch consolidation casting technique was applied to fabricate a diatomite-based thermal insulating ceramic with hierarchical porosity. Diatomite mixtures with 0%, 10%, 20%, 30%, and 40% starch were consolidated. The results show that starch content significantly influences apparent porosity, and this, in turn, influences several parameters, such as thermal conductivity, diametral compressive strength, microstructure, and water absorption of diatomite-based ceramics. The porous ceramic processed by the starch consolidation casting method corresponding to the mixture of diatomite with 30% starch obtained the best properties, with a thermal conductivity of 0.0984 W/m·K, an apparent porosity of 57.88%, a water absorption of 58.45%, and a diametral compressive strength of 35.18 kg/cm2 (3.45 MPa). Our results reveal that the diatomite-based ceramic thermal insulator obtained by starch consolidation is effective for use on roofs to improve thermal comfort in dwellings located in cold regions.

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Section: Discussionsupporting

confidence: 93%

“…When the starch content increased from 0 wt.% to 40 wt.%, the water absorption increased from 36.35 wt.% to 59.35 wt.%. These results are slightly lower than those obtained by Ho et al [29].…”

Section: Discussioncontrasting

confidence: 68%

Ceramic Thermal Insulator Based on Diatomite Obtained by Starch Consolidation Casting

2023

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“…Samples T 3 and P 1 had the lowest and highest thermal conductivity values of 0.09 and 0.62 W/(m.K), respectively. This was in agreement with Ho et al [39] that an inverse relationship exists between the thermal conductivity coefficient and porosity of the porous ceramics. The decreasing values of thermal conductivity corresponded with increasing values of water absorption as well as increasing apparent porosity in each case.…”

Section: A) B) C)supporting

confidence: 93%

Evaluating the properties of cellular ceramics prepared with a granite dust and plantain (Musa paradisiaca) peel powder for external wall thermal insulation of buildings

Odewole

2021

Cerâmica

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The viability of preparing cellular ceramics suitable for external wall insulation of buildings was investigated using granite dust, ball clay, plantain peels, sodium silicate, and sodium hydroxide. The predetermined compositions of the raw materials were mixed homogeneously and then subjected to uniaxial pressing at 10 MPa. The formulated samples were oven-dried and sintered in a gas kiln at 850 °C for 3 h. The obtained cellular ceramics were then subjected to standard property tests. The results revealed water absorption of 19.5-41.7%, bulk density of 1.39-1.86 g/cm 3 , apparent porosity of 36.4-66.7%, thermal conductivity of 0.09-0.62 W/(m.K), and compressive strength of 0.9-18.4 MPa. From the results, the optimum sample of the cellular ceramics prepared is a potential thermal insulation material for load-bearing applications such as walling systems in buildings, where not only low thermal conductivity but also high mechanical strength is required.

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“…(Wu and Zhang, 2019). It also serves as raw material for constructional heat-insulating and soundproof materials (Fraine et al, 2019) and additives to some types of cement, as well as a polisher (in the paste composition) for metals and marbles (Ho et al, 2019;Jiang et al, 2019). The diatomite-based ceramics is also used for heat insulation when producing aluminum (Li and Shi, 2019).…”

Section: Introductionmentioning

confidence: 99%

The Features of Deformation and Destruction of Porous Diatomitebased Ceramics

Скворцов¹,

Luk'yanov²,

Skvortsova³

2020

PTQ

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The experimental and theoretical investigations of mechanical properties of porous materials are one of the priority areas of development of condensed matter physics. Diatomite ceramics can serve as a raw material for structural heat and sound insulating materials and additives to some types of cement, as a polisher for metals and marble. Diatomite-based ceramics are also used for thermal insulation in aluminum production. The foamdiatomite ceramics is a promising porous material. But the properties of diatomite ceramics are not well studied, which determines the relevance of the study. The main task of the present work is the investigation of porosity and elastic moduli of diatomite ceramics, as well as the effect of thermal treatment on its physical-mechanical properties. The work deals with studying mechanical properties of porous ceramics based on diatomite – asedimentary rock composed predominantly of shells with micro- and nanopores of 50 to 500 µm. From the results of studying the microstructure of porous diatomite-based ceramics, the average porosity of samples (~50%) was determined, and the values of static (35 to 45 GP?) and dynamic (0.3 to 0.8 GP?) elastic moduli were experimentally measured. It was found that the values of elastic moduli decrease as material porosity increases. The experiment showed that the elastic modulus of the considered high-porous material was two orders of magnitude less than that of the crystalline one.

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Characteristics of porous ceramics prepared from sandblasting waste and waste diatomite by co‐sintering process

Cited by 6 publications

References 28 publications

Ceramic Thermal Insulator Based on Diatomite Obtained by Starch Consolidation Casting

Ceramic Thermal Insulator Based on Diatomite Obtained by Starch Consolidation Casting

Evaluating the properties of cellular ceramics prepared with a granite dust and plantain (Musa paradisiaca) peel powder for external wall thermal insulation of buildings

The Features of Deformation and Destruction of Porous Diatomitebased Ceramics

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