An air-drying model for piled logs of Eucalyptus globulus and Eucalyptus nitens in Chile

Bown, Horacio E.; Lasserre, Jean-Pierre

doi:10.1186/s40490-015-0047-6

Cited by 10 publications

(14 citation statements)

References 6 publications

(13 reference statements)

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“…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%

Different Approaches to Develop More Sustainable Concrete Alternatives

Pradena¹,

César²

2022

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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Section: Natural Fibres To Control Concrete Microcrackingmentioning

confidence: 99%

Different Approaches to Develop More Sustainable Concrete Alternatives

Pradena¹,

César²

2022

Sustainability of Concrete With Synthetic and Recycled Aggregates

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“…Some differences can be found in their growth rates (Pérez-Cruzado et al, 2011), frost tolerances (Close et al, 2000;Davidson et al, 2004) and their responses and susceptibilities to pathogens (Gonçalves et al, 2019;Smith et al 2007), growth stress, wounds and pruning (Beadle et al, 2001;Deflorio et al, 2007;Wiseman et al, 2009). Also, they present crucial differences regarding their industrial properties as wood (McKinley et al, 2002) and the moisture contents of their logs (Bown and Lasserre, 2015). In this sense, the consensus is that E. globulus presents greater interest for the paper industry (Antes and Joutsimo, 2015;Pérez et al, 2006;Pérez-Cruzado et al, 2011) while E. nitens is superior from an energy point of view (Pérez et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Mapping Eucalyptus Species Using Worldview 3 and Random Forest

Alonso

Picos

Armesto

2022

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. Recent advances in remote sensing technologies have allowed the development of new innovative methodologies to obtain geospatial information about Eucalyptus genus distribution. This is an important task for forest stakeholders due to the high presence of this genus in forest plantations worldwide. Therefore, the next step in research should focus on exploring remote sensing possibilities to discern between Eucalytpus species. It would be an important step forward in forest management since different Eucalyptus species present different characteristics and properties that imply different management plans and industrial usages. This study accomplish the classification of E. nitens and E. globulus, the most common Eucalyptus species in the Iberian Peninsula. Worldview-3 images and random forest are used in a forest area placed in Galicia (Northwest of Spain). The differentiation of Eucalyptus species resulted in a producer’s accuracy of 84% and a users’ accuracy of 70% for E. nitens, while for E. globulus accuracy metrics did not reach 70%. The most important bands in the classification were the coastal blue and the blue, followed by the red related ones. The resulting unequal accuracy metrics might be caused by an imbalanced presence of both species in the selected study area. Therefore, further studies might be developed in different locations.

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“…Temperature, relative humidity and airflow effect the drying process of wood piles (Bektas et al 2017). Different timber dimensions, bark content and piling specifications may strongly affect natural-drying times (Simpson andWang 2004, Bown andLasserre 2015). The drying process has several important advantages such as increases some strength properties and improves dimensional stability of wood (Forest Products Laboratory 1999).…”

Section: Introductionmentioning

confidence: 99%

Influences of different drying climates on Eucalyptus camaldulensis wood properties

Bektaş

Çiçekler

et al. 2021

Maderas, Cienc. tecnol.

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One of the most important disadvantages of the wood material, whose usage is becoming more and more widespread, is the dimensional instability that occurs in its interaction with water. Therefore, studies to improve these drawbacks of wood, remain always up to date. For the mentioned purpose in this study, some chemical, morphological, physical and mechanical properties of Eucalyptus camaldulensis woods, which were naturally dried in outdoor and indoor climate in Eastern Mediterranean (Kahramanmaraş province) atmosphere conditions of Turkey, were investigated. According to the results of the study, chemical properties of Eucalyptus woods dried indoor were measured as merely 0,23 % higher than dried ones outdoor. The results of morphological measurements indicated that the fiber dimensions of eucalypt wood dried in indoor were average 1,48 % lower than the ones dried out outdoor. Also, as a result of statistical analysis, it was found that there were significant differences (ρ < 0,000) between the physical properties of Eucalyptus wood samples indoor and outdoor according to the t-test. At the same time, as a result of the t-test applied to determine the effect of drying conditions on mechanical properties of Eucalyptus wood, modulus of elasticity, compression, tensile, dynamic bending and shear strength did not cause any significant difference between indoor and outdoor, while bending and Janka hardness strengths showed significant differences at ρ < 0,000 level. Finally, when the data obtained as a whole is considered, it can be said that testing of Eucalyptus wood which requires a very sensitive drying in different climates has important contributions on the subject. Regarding eucalypts, which has a high distribution area (20 million hectares) in the world, it is recommended to relevant institutions and organizations to expand and maintain such study in the future. Lastly, according to obtained data from this study, it can be said that the experiments of Eucalyptus woods which require a very delicate drying in different environments provide important contributions on the subject.

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An air-drying model for piled logs of Eucalyptus globulus and Eucalyptus nitens in Chile

Abstract: Background: Water accounts for around half of the total mass in living trees, and therefore large savings can be achieved if logs are dried before transporting or burning.

Cited by 10 publications

References 6 publications

Different Approaches to Develop More Sustainable Concrete Alternatives

Different Approaches to Develop More Sustainable Concrete Alternatives

Mapping Eucalyptus Species Using Worldview 3 and Random Forest

Influences of different drying climates on Eucalyptus camaldulensis wood properties

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