Effect of Rice Husk and Rice Husk Ash on Properties of Lightweight Clay Bricks

Janbuala, Sutas; Wasanapiarnpong, Thanakorn

doi:10.4028/www.scientific.net/kem.659.74

Cited by 19 publications

(15 citation statements)

References 13 publications

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“…Approximately Zyoud et al, 2020). In addition, it can be observed that at temperatures between 100 C and 200 C, the fresh adsorbent revealed mass loss of approximately 0.20% which may be associated with coordinated moisture loss (Janbuala and Wasanapiarnpong, 2015). Further observations can be made that the mass loss at temperatures exceeding 200 C was 1.35% and chemical bonds were broken at such temperatures.…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 88%

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Investigation of clay brick waste for the removal of copper, nickel and iron from aqueous solution: batch and fixed – bed column studies

Mokokwe

Letshwenyo²

2022

Heliyon

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Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 88%

“…thermographs reported byZyoud et al (2020) (Favero et al, 2016),(Mac Ias-Quiroga et al, 2018) (Janbuala and Wasanapiarnpong, 2015).3.1.4. Fourier transform infrared (FTIR) measurementsFigure5represents the infrared spectral bands for the functional groups of found in the fresh and loaded MGBW.…”

mentioning

confidence: 99%

Investigation of clay brick waste for the removal of copper, nickel and iron from aqueous solution: batch and fixed – bed column studies

Mokokwe

Letshwenyo²

2022

Heliyon

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“…Nesses estudos, o volume de fibra adicionada foi o fator principal para a redução da condutividade térmica, apontando uma relação inversamente proporcional. Nessa perspectiva [34,35] estudaram os efeitos da adição de casca de arroz em materiais cimentícios e relataram o aumento da porosidade, o que a princípio deveria reduzir a condutividade térmica, e contraria os resultados encontrados.…”

Section: Condutividade Térmicaunclassified

Desempenho térmico-acústico-mecânico de um compósito de matriz cimentícia leve reforçado com casca de arroz

et al. 2019

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RESUMOVisando desenvolver um novo produto com bom desempenho térmico-acústico-mecânico para servir como alternativa aos materiais comumente utilizados para vedação, foi produzido um compósito a partir de uma matriz cimentícia leve e casca de arroz. A matriz cimentícia consistindo em uma pasta de cimento com ar incorporado, que é intitulada por vários pesquisadores como concreto celular, tem como características principais sua reduzida massa específica e o grande número de pequenos poros não interligados. Por sua vez, a casca de arroz é uma fibra vegetal oriunda da benfeitoria do arroz abundante no estado do Rio Grande do Sul, que é o maior produtor nacional do grão, e que não possui atualmente uma destinação adequada. O concreto celular e o compósito (concreto celular mais casca de arroz) foram testados quanto à resistência mecânica à compressão axial simples e quanto aos desempenhos acústico e térmico. Em relação à resistência à compressão, apesar de constatar-se que a casca de arroz influenciou negativamente no produto, ambos os materiais atingiram respectivamente as resistências mínimas de 1,20 MPa e 1,50 MPa estipuladas pelas NBR 13.438 e NBR 15.270, entretanto, somente a matriz atendeu aos 3,00 MPa exigidos pela NBR 6136. Na análise acústica, o compósito obteve um melhor desempenho quanto a absorção acústica, por outro lado, quanto ao isolamento acústico os materiais não apresentaram valores estatisticamente diferentes, impossibilitando afirmar qual produto é superior. No que concerne a condutividade térmica, o compósito com casca de arroz apresentou desempenho inferior à matriz, fato atribuído à elevada quantidade de matéria orgânica presente nas fibras. Palavras-chave: concreto celular, casca de arroz, desempenho acústico, condutividade térmica, resistência mecânica. ABSTRACTAiming to develop a new product with good thermal-acoustic-mechanical performance to serve as an alternative to the materials commonly used for sealing, a composite was fabricated from a light cementitious matrix and rice husk. The cement matrix consisting in a cement paste with incorporated air, titled by several researchers as cellular concrete, presents main characteristics such as low specific mass and the large number of non-interconnected small pores. In turn, the rice husk is a vegetal fiber derived from the residue of rice production abundant in the Rio Grande do Sul state, the largest national producer of the grain. The cellular concrete and the composite (cellular concrete plus rice husk) were tested for mechanical resistance by single axial compression and by acoustic and thermal performance. Regarding the compressive strength, although the rice husk had a negative influence on the product, the both materials reached respectively the minimum strengths of 1.20 MPa and 1.50 MPa stipulated by NBR 13.438 and NBR 15.270, however, only the matrix (cellular concrete) hit the 3.00 MPa required by the NBR 6136. For the acoustic test, the composite obtained a better performance in acoustic absorption; on the other hand, concerned with...

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“…Rice husk ash (RHA) is the major agricultural waste in Thailand. It contains approximately 90% silica, which is a highly porous structure and lightweight, with a high specific surface area [5][6][7]. Therefore, attempts to do co-modified clay with phosphate rock and rice husk ash are expected to improve the porous structure and add essential nutrients to clay pellets, which finally will be available for plant uptake.…”

Section: Introductionmentioning

confidence: 99%

The correlation between phase formation and the structure of the pellets with the fungal immobilization study as a commercial substrate culture/planting material

et al. 2022

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Calcined clay pellets are popular planting material for those who love to grow plants in pots. The calcined clay pellets consist of clay (C), phosphate rock (PR), and rice husk ash (RHA). [(1-x)(50C–50PR)-xRHA], x(RHA) = 0, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, and 0.65 wt% were prepared by a conventional solid-state reaction method. The samples were made into a spherical shape with a diameter of 10 mm and fired at 600℃ to 1000℃. The effect of x contents on phase formation, microstructure, and chemical properties of [(1-x)(50C–50PR)-xRHA] was studied. X-ray diffraction revealed the typical assemblages with quartz, illite, and kaolinite in all the samples. SEM images of samples showed irregular packing and a highly porous microstructure. The addition of x(RHA) contents results in porous microstructure in all the samples. The surface area and pore volume of samples increased from 8.83 m2·g-1 to 14.71 m2·g-1 and 0.938 cm3·g-1 to 0.942 cm3·g-1, respectively, with the increase of x(RHA). The density of the samples slightly decreased from 2.45±0.06 g·cm-3 to 1.94±0.05 g·cm-3, with an increase in x(RHA) contents. The capability of calcined clay pellets to immobilize plant growth-promoting fungi was then studied. The results showed that orchid endophytes, as plant growth-promoting fungi, grow well on the calcined clay pellets saturated with potato dextrose broth (PDB). Besides, all fungi can live on calcined clay pellets and stay viable for at least 35 days after inoculation. These results suggested that the calcined clay pellets could serve as planting material that enhances plant growth (via its nutrients and growth-promoting fungi) simultaneously.

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Effect of Rice Husk and Rice Husk Ash on Properties of Lightweight Clay Bricks

Cited by 19 publications

References 13 publications

Investigation of clay brick waste for the removal of copper, nickel and iron from aqueous solution: batch and fixed – bed column studies

Investigation of clay brick waste for the removal of copper, nickel and iron from aqueous solution: batch and fixed – bed column studies

Desempenho térmico-acústico-mecânico de um compósito de matriz cimentícia leve reforçado com casca de arroz

The correlation between phase formation and the structure of the pellets with the fungal immobilization study as a commercial substrate culture/planting material

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