Physical and mechanical properties of cross-laminated timber made from Pinus tecunumanii wood
Propiedades físicas y mecánica de madera contralaminada fabricada con Pinus tecunumanii
DOI:
https://doi.org/10.15446/rfnam.v78n2.114727Keywords:
Bending static, Density , Finger joint , Wood planks (en)Flexion estática, Densidad, Finger joint , Tablones de madera (es)
Timber from forest plantations is of great relevance to be used as a substitute for timber from natural forests; thus, reducing pressure on them and in such a way indiscriminate felling. Alternative building materials, like cross-laminated timber (CLT), are being sought in the world. In Colombia, the CLT production is not well-studied; thus, this investigation characterized the physical and mechanical behavior of cross-laminated timber (CLT) in three layers made with Pinus tecunumanii wood manufactured by Finger Joint and wood plank systems. In each of the CLTs, density, modulus of elasticity and modulus of rupture in static bending were evaluated. Both manufacturing systems produced CLTs with an air-dry medium density and low resistance to static bending. The CLT made with finger joints showed low elasticity, while the CLT made with a solid wood planks system showed medium elasticity. The results of this study, with wood match material Pinus tecunumanii showed higher values than those reported for other woods. Future studies should focus on determining changes in the physical and mechanical properties of CLT with quality-rated wood.
Las maderas procedentes de plantaciones forestales son de gran relevancia para ser utilizadas como reemplazos de las procedentes de bosques naturales; con lo cual se disminuye la presión sobre los mismos y de esta forma la tala indiscriminada. En el mundo se están buscando materiales alternativos para la construcción, como es el caso de la madera contralaminada o CLT. En Colombia se encuentran pocos estudios donde se referencien la producción de CLT; por ello, el presente estudio caracterizó el comportamiento físico y mecánico de CLT en 3 capas fabricados con el sistema de Finger Joint y con tablones de madera maciza de Pinus tecunumanii. En cada uno de los CLT fueron evaluadas su densidad, módulo de elasticidad y módulo de rotura a la flexión estática, los CLT fabricados por ambos sistemas de fabricación presentaron una mediana densidad seca al aire; además, ambos presentan baja resistencia a la flexión estática; los CLT fabricados con el sistema de Finger Joint presentaron una baja elasticidad y con el sistema con tablones de madera maciza presentaron una mediana elasticidad. Los resultados arrojados en este estudio con material de partido de la madera Pinus tecunumanii son mayores a los resultados reportados para otras maderas. Los estudios futuros deben centrarse en determinar los cambios en las propiedades físicas y mecánicas de CLTs con madera con clasificación de calidad.
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