Influence of the proportion of wood on the thermal and mechanical performances of clay-cement-wood composites

Rim, Kwan; Ledhem, A; Douzane, Omar; Dheilly, Rose-Marie; Quéneudec, M.

doi:10.1016/s0958-9465(99)00008-6

Cited by 121 publications

(30 citation statements)

References 2 publications

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“…We know that the density of the matrix (cement-jute) is greater than the density of jute fibres and that the porosity of the matrix increases with the addition of fibres. The decrease in thermal conductivity is related to the increase in porosity owing to the addition of particles [42]. With the addition of more than 33.34% wt of jute, it seems that the pores do not increase, and so the thermal conductivity does not increase, as can be observed in Figure 7.…”

Section: Thermal Propertiesmentioning

confidence: 83%

Study of Waste Jute Fibre Panels (Corchorus capsularis L.) Agglomerated with Portland Cement and Starch

Ferrández-García

García-Ortuño

et al. 2020

Polymers

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This paper presents an experimental study on the bond behaviour of cement panels reinforced with plant fibres from the recycling of waste jute bags, using starch as a plasticiser. During processing, different proportions of jute (5 wt %, 10 wt %, 15 wt %, and 20 wt %) were used with respect to the weight of cement, and the mixture was exposed to a pressure of 2.6 MPa and a temperature of 100 °C. The density, swelling thickness, internal bonding, flexural strength, and thermal conductivity were studied. Mechanical tests indicated that the values of the modulus of rupture (MOR) and the modulus of elasticity (MOE) increased over time; thus, the jute particles appeared to be protected by the plasticised starch and no degradation was observed. At 28 days, the particleboard with 5% starch had an MOR of 12.82 MPa and an MOE of 3.43 GPa; these values decreased when the jute proportion was higher. The thermal conductivity varied from 0.068 to 0.085 W·m−1·K−1. The main conclusion is that jute-cement-starch composite panels can be manufactured with physical, mechanical, and thermal properties that meet the European standards for use in the construction of buildings as partitions, interior divisions, and thermal insulators.

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Section: Thermal Propertiesmentioning

confidence: 83%

Study of Waste Jute Fibre Panels (Corchorus capsularis L.) Agglomerated with Portland Cement and Starch

Ferrández-García

García-Ortuño

et al. 2020

Polymers

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“…Pesquisadores afirmam que a proporção de madeira na composição e a densidade dessas partículas são consideradas pequenas quando comparadas à proporção e à massa específica do aglomerante utilizado (TURGUT, 2007; MORALES-CONDE; RODRÍGUEZ-LIÑÁN; PEDREÑO-ROJAS, 2016). É possível observar ainda que a maior densidade de massa fresca foi obtida para as amostras de referência, o que indica que a presença de partículas de madeira contribui para a diminuição da densidade dos compósitos (AL RIM et al, 1999;ANDIÇ-ÇAKIR et al, 2014;XIE et al, 2015). O mesmo ocorre com as partículas P1,2, cujos valores de massa unitária foram os menores obtidos entre as composições granulométricas avaliadas das partículas e, consequentemente, apresentaram os menores valores de densidade de massa endurecida.…”

Section: Análise Da Influência Das Composições Granulométricas Das Paunclassified

Influência da composição granulométrica das partículas de resíduos de madeira nas propriedades de compósitos minerais: parte 1 - cimento-madeira

2019

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Resumo Compósitos de fibras naturais são uma alternativa para absorver os resíduos de construção e demolição (RCD) de madeira, o que reduz os impactos ambientais e contribui com o desenvolvimento de materiais, produtos e processos mais sustentáveis. Pesquisadores têm obtido resultados promissores com compósitos contendo diferentes dimensões de partículas. O objetivo deste estudo foi avaliar a influência da composição granulométrica das partículas de madeira provenientes de RCD nas propriedades físicas e mecânicas de compósitos de cimento-madeira. As partículas de madeira foram moídas em moinho de martelos e caracterizadas. Foi utilizado o cimento Portland, o aditivo acelerador de pega e a água. Os compósitos foram produzidos com diferentes relações aglomerante-madeira com relação água-cimento fixada em 0,50 em massa. A partir dos resultados dos ensaios no estado fresco e endurecido, verificou-se que os valores de massa unitária das partículas de madeira influenciaram nas propriedades físicas e, consequentemente, no desempenho mecânico dos compósitos. Como conclusão tem-se que a composição granulométrica P1,2 resultou na menor densidade de massa endurecida, enquanto a composição granulométrica P1 proporcionou maior resistência à tração na flexão.

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“…makes these wood-cement composites (WC) interesting to a large extent in the building industry [34]. In 1999, Al Rim et al studied the effect of different wood proportions on the thermal and mechanical performance of clay-cement-wood composites [35]. Likewise, in an experimental study by Taoukil et al the effect of moisture content on the thermal conductivity and diffusivity of wood-concrete composites was investigated [36].…”

Section: Biomass Materials In Building Constructionmentioning

confidence: 99%

Sustainable New Brick and Thermo-Acoustic Insulation Panel from Mineralization of Stranded Driftwood Residues

et al. 2016

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Abstract:There is considerable interest recently in by-products for application in green buildings. These materials are widely used as building envelope insulators or blocks. In this study, an experimental study was conducted to test stranded driftwood residues as raw material for possible thermo-acoustic insulation panel and environmentally sustainable brick. The thermal and acoustic characteristics of such a natural by-product were examined. Part of samples were mineralized by means of cement-based additive to reinforce the material and enhance its durability as well as fire resistance. Several mixtures with different sizes of ground wood chips and different quantities of cement were investigated. The thermo-acoustic in-lab characterization was aimed at investigating the thermal conductivity, thermal diffusivity, volumetric specific heat, and acoustic transmission loss. All samples were tested before and after mineralization. Results from this study indicate that it is possible to use stranded driftwood residues as building materials with competitive thermo-acoustic properties. In fact, the thermal conductivity was shown to be always around 0.07 W/mK in the unbound samples, and around double that value for the mineralized samples, which present a much higher volumetric specific heat (1.6 MJ/m 3 K) and transmission loss capability. The lignin powder showed a sort of intermediate behavior between the unbound and the mineralized samples.

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Influence of the proportion of wood on the thermal and mechanical performances of clay-cement-wood composites

Cited by 121 publications

References 2 publications

Study of Waste Jute Fibre Panels (Corchorus capsularis L.) Agglomerated with Portland Cement and Starch

Study of Waste Jute Fibre Panels (Corchorus capsularis L.) Agglomerated with Portland Cement and Starch

Influência da composição granulométrica das partículas de resíduos de madeira nas propriedades de compósitos minerais: parte 1 - cimento-madeira

Sustainable New Brick and Thermo-Acoustic Insulation Panel from Mineralization of Stranded Driftwood Residues

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