Evaluation of Mechanical Properties of Concrete Reinforced with Eucalyptus globulus Bark Fibres

Mansilla, Claudia A; Pradena, Mauricio; Fuentealba, Cecilia; César, Andrés

doi:10.3390/su122310026

Cited by 14 publications

(14 citation statements)

References 41 publications

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“…The authors stated that certain bark species, due to their large amounts of extractives, can hinder the cement setting. The effects of Eucalyptus globulus bark fibre in traditional concrete mechanical properties were evaluated by [35]. The results of this study promote the practical use of bark fibre of Eucalyptus globulus in numerous areas of concrete applications such as, roadways, residential, agricultural, commercial, tunnelling, precast concrete products, airports, warehouses, etc.…”

Section: Introductionmentioning

confidence: 72%

Selected Properties of Cement Bound Spruce and Larch Bark Bio-Aggregates

et al. 2021

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The aim of this study is to investigate the suitability of spruce and larch bark for the production of cement-bonded composites. At the beginning of this research, the curing behaviour of the admixtures was quantified with temperature profiles when testing spruce, larch, pine and poplar bark, to determine the compatibility between the components of the bio-aggregates, to analyse the cement curing and to establish which bark species should be successfully included in cement bonded composites. Considering the results, it was observed that the average densities of 600–700 kg/m3 of bio-aggregates are 40–55% lower than that of established products on the market, although spruce and larch bark are in a similar range. The situation is different for the compressive strength, as larch bark showed up to 30% higher values than spruce bark. This study revealed also different hardening characteristics of the two cement types used as binders for spruce and larch bark. The results of this study demonstrated that tree bark of Picea abies and Larix decidua Mill. can be successfully utilized for the production of a cement-bonded composite material.

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Section: Introductionmentioning

confidence: 72%

Selected Properties of Cement Bound Spruce and Larch Bark Bio-Aggregates

et al. 2021

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“…Geo-dependence is also crucial when dealing with waste materials incorporated in concrete, especially because these alternative solutions must be practical and feasible to implement in order to effectively reuse the waste [29]. Therefore, they must be feasible not only from a technical point of view, but from an economic perspective, as well, including all associated costs.…”

Section: Geo-dependency Of the Concrete Materialsmentioning

confidence: 99%

“…Considering that the mechanical properties, and in particular the compressive strength, is fundamental for the massive use of concrete, it is fundamental the evaluation of those properties if a particular type of natural fibre wants to be considered to control concrete microcracking. In particular, at the University of Concepción, a study has been developed in order to evaluate mechanical properties of concrete with Eucalyptus Globulus bark fibre, which is a waste product of the forestry industry widely available in Chile [29,96]. Compressive strength results of concrete samples [29].…”

Section: Natural Fibres To Control Concrete Microcrackingmentioning

confidence: 99%

“…In particular, at the University of Concepción, a study has been developed in order to evaluate mechanical properties of concrete with Eucalyptus Globulus bark fibre, which is a waste product of the forestry industry widely available in Chile [29,96]. Compressive strength results of concrete samples [29].…”

Section: Natural Fibres To Control Concrete Microcrackingmentioning

confidence: 99%

“…As the purpose is to produce a useful improvement in concrete properties and utilise waste efficiently, it is important to consider the geo-dependence of the concrete material [29]. This is particularly evident in samples made with cement containing local fly ash (Great Concepción, Chile).…”

Section: Incorporation Of End-of-life Tyre Rubber Into Concretementioning

confidence: 99%

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Sustainability of Concrete With Synthetic and Recycled Aggregates

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As important as it is, sustainability related with the concrete material is more than reducing the amount of cement in concrete mixes. In effect, there can be other types of contributions to a sustainable development using this fundamental material. The purpose of this book chapter is to analyse some of these approaches, in particular, concrete durability, reducing the amount of required concrete (and then cement) through innovative structural design, and reducing the amount of aggregates used in the concrete material. More specifically, examples and results obtained in Chile with biological self-healing concrete, thinner concrete pavements and concrete with industrial and domestic waste as partial aggregate replacement are included in the chapter. Due to its importance, the geo-dependency of the concrete material is addressed as well.

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Tree bark utilization in insulating bio‐aggregates: a review

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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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Evaluation of Mechanical Properties of Concrete Reinforced with Eucalyptus globulus Bark Fibres

Cited by 14 publications

References 41 publications

Selected Properties of Cement Bound Spruce and Larch Bark Bio-Aggregates

Selected Properties of Cement Bound Spruce and Larch Bark Bio-Aggregates

Different Approaches to Develop More Sustainable Concrete Alternatives

Tree bark utilization in insulating bio‐aggregates: a review

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