Granulated cork with bark characterised as environment-friendly lightweight aggregate for cement based materials

Menor, María Concepción Pacheco; Ros, Pedro Serna; García, Antonio Macías; Caballero, M. J.

doi:10.1016/j.jclepro.2019.04.154

Cited by 35 publications

(16 citation statements)

References 40 publications

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“…These conclusions are analogous to those recorded by Merabti et al, 52 who thoroughly investigated the thermomechanical and physical properties of waste cork mixed with cement, slag, and sand. Their experimental work included different variables, such as the cement/cork ratios (1/1, 1/2, and 1/3 by volume), the cement/water ratios (0.3, 0.35, 0.4, 0.45, and 0.5), the curing environments (in water, in the laboratory and in water followed by curing in the laboratory) and the percentages of the cement substitution with slag (15%, 30% and 50% by weight of cement) and sand (30%).…”

Section: The Potential Incorporation Of Bark In Cement Matricessupporting

confidence: 89%

“…Merabti et al 52 also explored the risk of cracking of the specimens in the long term, and tested the swelling and the shrinkage of the specimens after 90 days of curing. Likewise, other studies showed a decrease in thermal conductivity associated with an increase in the volume of cork used in the composites.…”

Section: The Potential Incorporation Of Bark In Cement Matricesmentioning

confidence: 99%

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Tree bark utilization in insulating bio‐aggregates: a review

Giannotas

Kamperidou

Barboutis

2021

Biofuels Bioprod Bioref

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This review gives an overview of recent advances in research on the role of tree bark material in bark-cement bio-composites, and their potential as building insulation materials. Suberin and other bark extractives seem to be of great importance for the insulation properties of such composites. Bark is a readily available, biological raw material with unique properties and it has revealed promising results as a bio-insulation material, either alone or in mixtures with different matrices (cement, lime, resins, polymers, etc.). The thermal, mechanical, acoustic, and hygroscopic properties of these bark-insulating composites depend on several factors, primarily the type of tree bark, the density and mechanical strength of the bark, the density of the boards produced, and the ratio of bark material to the binder material used in the board production (cement, lime, resins, polymers, etc.). The size of granules and the thickness of the board produced seem to be factors with a lower impact on the properties of the bark-cement composites. A low proportion of bark fibers or particles (0.5-1%) in bark-cement composites has proven highly beneficial to their mechanical and thermal properties and ensures higher workability of the mixture. Different modification treatments of bark material should be investigated, with the aim of decreasing the bark extractives content, to improving the cement setting, decreasing the unstable hemicellulose components and their hygroscopic nature, improving the bark particles' durability in alkaline environments, and upgrading their adherence properties. As the demand for alternative, sustainable structural materials keeps rising, the cement-bark composites will undoubtedly keep attracting the attention of the scientific and industrial world.

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Section: The Potential Incorporation Of Bark In Cement Matricessupporting

confidence: 89%

Section: The Potential Incorporation Of Bark In Cement Matricesmentioning

confidence: 99%

Tree bark utilization in insulating bio‐aggregates: a review

Giannotas

Kamperidou

Barboutis

2021

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

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“…Besides, cork has a high absorption value and can be used as a lightweight aggregate for internal curing of concrete. As for other physical properties, the advantages of cork as a lightweight aggregate are verified [57].…”

Section: Agricultural Wastementioning

confidence: 93%

“…The application of granulated cork with bark (GCB) as lightweight aggregate to prepare concrete has been investigated most recently [57]. In this study, the chemical compositions and the physical properties of the GCB were tested followed by characterizing its alkali-silica reactivity.…”

Section: Mechanical Properties Of Green Lwacmentioning

confidence: 99%

Green and Durable Lightweight Aggregate Concrete: The Role of Waste and Recycled Materials

et al. 2020

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Lightweight aggregate concrete manufactured by solid waste or recycled by-products is a burgeoning topic in construction and building materials. It has significant merits in mitigating the negative impact on the environment during the manufacturing of Portland cement and reduces the consumption of natural resources. In this review article, the agricultural and industrial wastes and by-products, which were used as cementitious materials and artificial lightweight aggregate concrete, are summarized. Besides, the mechanical properties, durability, and a few advanced microstructure characterization methods were reviewed as well. This review also provides a look to the future research trends that may help address the challenges or further enhance the environmental benefits of lightweight aggregate concrete manufactured with solid waste and recycled by-products.

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“…The main industrial use of cork is the manufacture of stoppers for wine bottles, although recent studies have shown that the overall environmental impact of cork stoppers in wine bottles is higher than when using screwcaps [7]. Apart from the use for stoppers, other uses of cork are becoming more widespread lately, given its low density, as is the case of its use for the lightening of concrete [8] or lightweight aggregate for cementbased materials [9]. If cork is used as a stopper, a minimum thickness without excessive irregularities or fractures is necessary.…”

Section: Introductionmentioning

confidence: 99%

Virgin Natural Cork Characterization as a Sustainable Material for Use in Acoustic Solutions

et al. 2021

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A characterization of the sound absorption of a sustainable material with scarce current use such as natural virgin cork is presented in this paper in order to explore further possible applications in the design of acoustic solutions. Different samples of virgin cork not bonded and various decorative panel formats were tested under random sound incidence conditions in a standardized reverberation chamber. The samples in which the outer bark of the cork was facing upwards showed a better behavior as an acoustic absorber, with sound absorption coefficient values generally greater than 0.6 for frequency bands between 1 and 5 kHz. The results obtained were compared with samples of some recycled materials available in the scientific literature, such as sheep wool and PET.

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Granulated cork with bark characterised as environment-friendly lightweight aggregate for cement based materials

Cited by 35 publications

References 40 publications

Tree bark utilization in insulating bio‐aggregates: a review

Tree bark utilization in insulating bio‐aggregates: a review

Green and Durable Lightweight Aggregate Concrete: The Role of Waste and Recycled Materials

Virgin Natural Cork Characterization as a Sustainable Material for Use in Acoustic Solutions

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