Correlation Between Chemical Composition of Tropical Hardwoods and Wood–Cement Compatibility

Castro, Vinicius Gomes de; Azambuja, Rafael da Rosa; Bila, Narciso Fernando; Parchen, Carlos Frederico Alice; Sassaki, Guilherme L.; Iwakiri, Setsuo

doi:10.1080/02773813.2017.1355390

Cited by 19 publications

(6 citation statements)

References 11 publications

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“…Tropical species tend to present high contents of extractives and, for this reason, are often overlooked as WCC raw material. Our study species have high total extractive contents, between 9.2% and 16.2% (Castro et al, 2017). The high degree of compatibility found can be explained in part by the part of the tree trunk from where the wood samples were collected.…”

Section: Discussionmentioning

confidence: 68%

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Alternative vibro-dynamic compression processing of wood-cement composites using Amazonian wood

et al. 2019

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Wood-cement composite (WCC) is a potential construction material for tropical regions, due to its physico-mechanical properties and resistance to decay and fungi attack. However it is important to test alternative production methods and wood materials that are easier and cheaper than those traditionally used, in order to create a higher demand for this product. The aim of this work was to evaluate the use of wood from four Amazonian species (Eschweilera coriaceae, Swartzia recurva, Manilkara amazonica and Pouteria guianensis) in the production of wood-cement composites through a vibro-dynamic compression process, an alternative method to the use of a hydraulic press. The inhibition degree caused by the wood to the cement cure, measured by the factor CA, indicated that all species were compatible with Portland cement (CP II-Z). WCC with densities higher than 1,100 kg m-3 (produced with E. coriaceae and S. recurva particles) showed compressive strength values higher than 10 MPa, which fulfills the minimum requirement for lightweitgh reinforced concrete blocks for structural use.

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Section: Discussionmentioning

confidence: 68%

“…Arabinose content values for the study species were retrived from Castro et al (2017). All statistical analyses were carried out with the Statgraphics Centurion XV software.…”

Section: Methodsmentioning

confidence: 99%

Alternative vibro-dynamic compression processing of wood-cement composites using Amazonian wood

et al. 2019

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“…Mechanical properties, compatibility, and crystallinity of the produced boards were all enhanced by the used pre-treatments. Gastro et al (2018) conducted studies on the correlation between the chemical composition of wood and the cement/wood compatibility. Portland cement II-Z and eight different tropical hardwoods from Amazonia were used for the experiments.…”

Section: Effect Of Pre-treatments On the Compatibility Of Cement And Woodmentioning

confidence: 99%

Effect of pre-treatments and additives on the improvement of cement wood composite: A review

Brahmia

Horváth

Alpár

2020

BioRes

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Cement wood composites (CWC) are a popular construction material. Lightweight or panel-wise wood-based buildings have a growing market in central Europe. Requirements and regulations on both the global and national level are forcing continuous developments. This paper summarizes the research achievements in improving the hygroscopic and mechanical properties and shortening the manufacturing time of CWC via pre-treatments and additives. In addition, new perspectives on enhancing its fire resistance properties by using fire retardant pre-treatments are discussed. CWC without any pre-treatment is a material within the B-s1, d0 category of fire resistance. Using fire retardants could upgrade it to the category A1 but the fire retardants should not affect the primary properties of CWC. There are a number of potential fire retardants of wood that may be used, such as phosphorus, boron, and magnesium compounds.

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“…Por exemplo, o Fator-C A da espécie folhosa Eucalyptus saligna é 75,2 [8], enquanto que a conífera Pinus taeda é de 85,7 [26]. Estes resultados corroboram com os relatados por CASTRO et al [27], que não encontraram correlação direta entre a quantidade de extrativos da madeira e os índices de inibição das espécies à pega do cimento. Isso indica que a compatibilidade com o cimento é um processo complexo e espécies de madeira não devem ser descartadas com base apenas em seus teores de extrativos.…”

Section: Teste De Compatibilidadeunclassified

Produção de compósitos madeira-cimento de baixa densidade pelo método vibro-dinâmico de compactação

2019

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RESUMOEsse trabalho teve como objetivo avaliar o potencial de uso da madeira de quatro espécies tropicais da Amazônia na produção de compósitos madeira-cimento pelo método de adensamento por vibro compactação. As partículas de madeira foram produzidas a partir de costaneiras das espécies Murici (Byrsonima crispa), Ingá vermelho (Inga paraensis), Ingá (Inga alba) e Mata-Matá (Eschweilera odora). Todas as espécies foram consideradas aptas para a produção de compósitos de acordo com o teste Fator C A . Foram testadas as propriedades físicas (densidade, absorção de água e inchamento em espessura) e mecânicas (ligação interna, flexão estática e resistência à compressão) dos compósitos. A densidade da madeira e o tamanho de suas partículas influenciaram a densidade final do compósito e suas propriedades de absorção de água e o módulo de elasticidade. A área superficial da partícula também afetou negativamente a resistência à compressão do material. Tanto o método quanto a madeira apresentaram potencial para fabricação de compósitos com possíveis aplicações como materiais de preenchimento na construção civil Palavras-chave: Fator C A , vibro-compactação, correlação de Pearson, madeira tropical. ABSTRACTThe aim of this work was evaluate the potential use of timbers from four tropical Amazonian species for production of wood-cement composites by vibro-compaction densification method. Wood particles were made from slab wood of Murici (Byrsonima crispa), Red Inga (Inga paraensis), Inga (Inga alba) e Mata-Mata (Eschweilera odora). All species were considered suitable for composites production according to the C A Factor test. Composites physical (density, water absorption and thickness swelling) and mechanical (internal bond, static bending and compressive strength) properties were evaluated. Wood density and particle size influenced the composites final density and their water absorption and modulus of elasticity properties. The particle surface area also affected negatively the material's axial compressive strength. Method and wood showed potential for production of composites with possible application as filling materials in civil construction.

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Correlation Between Chemical Composition of Tropical Hardwoods and Wood–Cement Compatibility

Cited by 19 publications

References 11 publications

Alternative vibro-dynamic compression processing of wood-cement composites using Amazonian wood

Alternative vibro-dynamic compression processing of wood-cement composites using Amazonian wood

Effect of pre-treatments and additives on the improvement of cement wood composite: A review

Produção de compósitos madeira-cimento de baixa densidade pelo método vibro-dinâmico de compactação

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