Wood fibre-reinforced cement composites

Campbell, M. D.; Coutts, R. S. P.

doi:10.1007/bf00550621

Cited by 68 publications

(30 citation statements)

References 3 publications

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“…The composites were produced by the slurry mix vacuum-dewatering compaction method, which resembles on laboratory scale the industrial Hatschek process for the production of thin fibro-cement sheets [20]. Different from the conventional mixing applied in the production of cement-based materials, the Hatschek process allows the use of high reinforcement rates, once the slurry mixing, with about 20% of solids and without a fixed water/cement ratio, provides a convenient dispersion of the fibers and matrix.…”

Section: Raw Materials and Composite Productionmentioning

confidence: 99%

“…Optimum reinforcement rates for achieving higher bending strength depend on the pulp source. In most of the cases in which hard-and softwood pulp and non-wood pulp are involved, the higher bending strengths are obtained at reinforcement rates between 8 and 12% by weight of the cementitious material employed [13,20]. In the present study a fixed reinforcement rate of 8% by weight of the cement was selected.…”

Section: Raw Materials and Composite Productionmentioning

confidence: 99%

“…Strength of reinforced specimens reduced to lower than that of plain specimens when compared to the saturated tested composites. As far as the excess of moisture prevents the interaction between fibers and matrix [13,20], the composite behavior of equilibrium samples is replaced by an increased porosity (unbounded fibers) in the saturated composites. The effect of water saturation in CP30-I is negligible as the high amount of high carbon content ash already resulted in composite with low bending strength in equilibrium condition.…”

Section: Composites' Mechanical Propertiesmentioning

confidence: 99%

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Rice Husk Ash as a Supplementary Raw Material for the Production of Cellulose–Cement Composites with Improved Performance

Rodrigues

Ghavami

Stroeven

2010

Waste Biomass Valor

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Rice husk is an agricultural by-product worldwide in large quantities available. This is a suitable biomass source for energy production. Compared to other agricultural by-products, the burned rice husk presents a high yield of ash (about 20%) mainly composed of silica that will be mostly amorphous when properly incinerated. Extensive research in the past three decades has allowed the introduction of rice husk ash (RHA) as a supplementary raw material in cement-based products, whereby significant improvements in strength and durability can be achieved, also contributing to ecological demands. This paper investigates the influences of two RHA admixtures on the physical and mechanical properties of bamboo-pulp-reinforced cement composites. These fibers suffer early degradation in the alkaline environment. RHA blending will reduce the ordinary Portland cement (OPC) content and can improve strength and density due to more effective particle packing, and significantly diminish alkalinity. The composites were produced in the laboratory by a method resembling the Hatschek process used by the fibrocement industry, with fixed reinforcement content and varying amounts of RHA. The results revealed that partial replacement of ordinary Portland cement by up to 30% of RHA had not impaired the mechanical behavior of the composites. Further, use of low-carbon-content RHA decreased porosity in the matrix and enhanced interfacial bonding of the composites. Since the deterioration of cellulose-cement composites is closely related to moisture movement and alkalinity, it is concluded that introduction of low-carbon content RHA can lead to improved durability performance of these composites.

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Section: Raw Materials and Composite Productionmentioning

confidence: 99%

Section: Raw Materials and Composite Productionmentioning

confidence: 99%

Section: Composites' Mechanical Propertiesmentioning

confidence: 99%

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Rice Husk Ash as a Supplementary Raw Material for the Production of Cellulose–Cement Composites with Improved Performance

Rodrigues

Ghavami

Stroeven

2010

Waste Biomass Valor

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“…Since the use of wood particles is considered attractive for the reinforcement of cement (Campbell and Coutts, 1980), their application leads to various challenges due to wood components like water soluble carbohydrates (e.g. sugars, starch, hemicellulose and pectin) and due to resins, oils, waxes and fats -depending on wood species (Schubert et al, 1990).…”

Section: Introduction 1 Uvodmentioning

confidence: 99%

Mineralized Wood Particle Reinforced Concrete as Stiffening Elements with Reduced Density

et al. 2015

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“…Durante as últimas três décadas, várias pesquisas foram desenvolvidas no intuito de encontrar substitutos para a fibra de amianto em produtos de fibrocimento largamente utilizados em construções (22,(24)(25)(26)(27)(28)(29) …”

Section: A Utilização De Fibras Vegetais Em Fibrocimentosunclassified

Utilização de resíduos sucro-alcooleiros na fabricação de fibrocimento pelo processo de extrusão

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Wood fibre-reinforced cement composites

Cited by 68 publications

References 3 publications

Rice Husk Ash as a Supplementary Raw Material for the Production of Cellulose–Cement Composites with Improved Performance

Rice Husk Ash as a Supplementary Raw Material for the Production of Cellulose–Cement Composites with Improved Performance

Mineralized Wood Particle Reinforced Concrete as Stiffening Elements with Reduced Density

Utilização de resíduos sucro-alcooleiros na fabricação de fibrocimento pelo processo de extrusão

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