Using wood fiber waste, rice husk ash, and limestone powder waste as cement replacement materials for lightweight concrete blocks

Torkaman, Javad; Ashori, Alireza; Momtazi, Ali Sadr

doi:10.1016/j.conbuildmat.2013.09.044

Cited by 158 publications

(86 citation statements)

References 12 publications

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“…Comparativamente aos dados de testes de flexão e tração direta, existem poucas fontes que reportam resultados de ensaios à compressão em compósitos cimento-madeira (Torkman et al, 2014). A Tabela 4 mostra os dados de resistência à compressão e módulo de elasticidade dinâmico dos compósitos.…”

Section: Resultsunclassified

“…Estudos de Xing et al (2015) evidenciaram perdas de 50 e 65% na resistência à compressão de blocos de concreto com substituição de 30 e 60% de areia por serragem. A resistência à compressão dos componentes de alvenaria é, portanto, inversamente proporcional ao percentual de serragem inserido (TORKMAN et al, 2014).…”

Section: Avaliação Dos Componentes De Alvenariaunclassified

“…Em compósitos cimento-madeira, a absorção de água aumenta consideravelmente com o aumento do percentual de serragem que substitui o agregado miúdo, seja pela característica higroscópica da madeira ou pelo aumento da porosidade da matriz, que permite o preenchimento dos vazios existentes pela água (TORKMAN et al, 2014 …”

Section: Avaliação Dos Componentes De Alvenariaunclassified

“…Por outro lado, se utilizada como um material de construção civil, pode diminuir a demanda por maté-ria prima e energia, além de auxiliar as empresas do segmento florestal a se adequarem a parâmetros mais sustentáveis no que diz respeito à destinação de resíduos (FAGUNDES, 2003). DOI: 10.1590 Muitas pesquisas são desenvolvidas atualmente buscando a utilização da serragem para fabricação de compósitos cimentícios (ASHORI et al, 2012;TORKMAN et al, 2014;BERTOLINI et al, 2014). Esses compó-sitos, denominados cimento-madeira, vêm sendo desenvolvidos cada vez mais com características desejáveis como durabilidade, estabilidade dimensional e resistência contra biodegradação, apresentando ainda vantagens econômicas (FRYBORT et al, 2008).…”

Section: Introductionunclassified

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Tijolos leves para alvenaria produzidos a partir de resíduos da indústria madeireira

Garcez

Machado²,

Garcez

et al. 2018

Eng. Sanit. Ambient.

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Section: Resultsunclassified

Section: Avaliação Dos Componentes De Alvenariaunclassified

Section: Introductionunclassified

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Tijolos leves para alvenaria produzidos a partir de resíduos da indústria madeireira

Garcez

Machado²,

Garcez

et al. 2018

Eng. Sanit. Ambient.

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“…The research related to the durability of concrete has been conducted by many researchers to minimize the negative ecological impact [10][11][12][13][14][15][16][17][18]. This research proposes to utilize OPEFB, RH, and CF without combustion process to reduce air pollution which is the trigger of global warming [19].…”

Section: Introductionmentioning

confidence: 99%

A comparative analysis of the quality of concrete blocks produced from coconut fibre, oil palm empty fruit bunch, and rice husk as filler material

et al. 2018

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Abstract. The accumulation of coconut fibre (CF), oil palm empty fruit bunch (OPEFB), and rice husks (RH) every year can reduce the fertility of soil and water absorption, and causes water acidification. Waste utilization as a filler material of concrete blocks was discussed in this research. Experimental design was used by comparing the quality of concrete blocks based on 36 specimens with varied compositions of waste (1%, 2%, 3%, and 4% by dry weight of total sand) and 3 specimens (0%) as control specimens with 3 replications for each composition. The quality of paving blocks was determined based on the testing of water absorption, porosity, compressive strength, and density. The results revealed that the quality of concrete blocks with the composition of CF (1% and 2%), OPEFB (1% and 2%), and RH (1%) meet the requirements of SNI 03-0691-1996 criteria in category B for parking paver and the maximum composition of each waste materials (3% and 4%) still comply SNI 15-2094-2000 in class 100 and 150 for the block walls. Statistical analysis revealed that the best treatments for compressive strength was RH (1%) and for water absorption it was RH (2%) and CF (4%).

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Chemical analysis and antioxidant properties of orange‐tree (Citrus sinensis L.) biomass extracts obtained via different extraction techniques

Bruno

Russo

Cetera

et al. 2020

Biofuels Bioprod Bioref

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Orange orchards are typical Mediterranean crops and a major feature of the heritage of the Mediterranean basin, where they play an important environmental and economic role. Their high availability, low price, and potential industrial application make the development of new and valuable uses of the orange's biomass of high interest. This research was focused: (i) on recognition and mapping of orange cultivation in the Basilicata region; (ii) on the evaluation of the antioxidant capacity of extracts;These authors contributed equally to this work. 510MR Bruno et al.In the Field: Chemical characterization of orange biomass (iii) on identification of extractives' traits. To achieve these objectives, the anti-oxidative properties and chemical compounds of the extracts from orange orchard biomass were analyzed. Different extraction techniques were applied, including maceration, ultrasound-assisted extraction, accelerated solvent extraction, and autoclaving. Results demonstrated the potential antioxidant activity of the bark and wood of orange-tree biomass, which has not been investigated before. The relative antioxidant capacity index showed that bark extracts were more effective than wood ones, and accelerated solvent extraction was the most effective process for recovering antioxidants. Chemical characterization by liquid chromatography-mass spectrometry (LC-MS) showed the presence of different natural compounds, including caffeic acid, alkaloids, and flavonoids. The development of innovative applications that use biomass derivatives could lead to their possible use in the market as a commodity for the chemical or cosmetic industries, giving new added value to the current use of biomass from agricultural practices. Through multi-criteria analysis it was possible to recognize the sustainability of these cropping models and their ecological function, using them for the preservation of environmental resources, environmental quality, and quality of life.

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Using wood fiber waste, rice husk ash, and limestone powder waste as cement replacement materials for lightweight concrete blocks

Cited by 158 publications

References 12 publications

Tijolos leves para alvenaria produzidos a partir de resíduos da indústria madeireira

Tijolos leves para alvenaria produzidos a partir de resíduos da indústria madeireira

A comparative analysis of the quality of concrete blocks produced from coconut fibre, oil palm empty fruit bunch, and rice husk as filler material

Chemical analysis and antioxidant properties of orange‐tree (Citrus sinensis L.) biomass extracts obtained via different extraction techniques

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