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      Propiedades físicas y mecánicas de tres especies de guaduas mexicanas (Guadua aculeata, Guadua amplexifolia y Guadua velutina) Translated title: Physical and mechanical properties of three Mexican guaduas (Guadua aculeata, Guadua amplexifolia and Guadua velutina)

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          Abstract

          Se determinaron algunas propiedades físicas y mecánicas de tres de las cinco especies del género Guadua que crecen en México con la finalidad de fomentar su uso en la construcción, aprovechando su comportamiento estructural. Las especies estudiadas fueron Guadua aculeata, Guadua amplexifolia y Guadua velutina sobre las que es conocido que poseen características adecuadas para la construcción de vivienda tradicional. Se recolectaron en los estados de Veracruz y Tabasco. Para G. velutina y G. amplexifolia los valores de densidad relativa básica (pa/vv) que se obtuvieron fueron entre 0,399 y 0,393 para la parte basal de los culmos, y de 0,514 y 0,506 para la parte superior. Para esta misma propiedad G. aculeata mostró valores ligeramente más altos, 0,429 en la parte basal y 0,653 para la parte superior de los culmos. De manera semejante los valores de resistencia en flexión (MOR), en condición verde, obtenidos fueron, en general, más bajos para la parte basal y más altos en la parte superior. Para G. velutina fueron entre 75,5 MPa y 88,3 MPa; para G. amplexifolia de 77,0 MPa y 102,1 MPa; y para G. aculeata de 59,7 MPa a 89,2 MPa.

          Translated abstract

          A test program on some physical and mechanical properties of three out of the five Guadua species growing in Mexico was carried out to promote their use in construction taking advantage of their structural behavior. Those species were Guadua amplexifolia, Guadua velutina and Guadua aculeata, which are traditionally well known to have characteristics for vernacular housing. Samples were collected in Veracruz and Tabasco states. Values obtained for G. velutina and G. amplexifolia basic relative density (ow/gv) range from 0,393 to 0,399 for the lowest part of culms, and from 0,506 to 0,514 for the top. G. aculeata showed values slightly higher, 0,429 in the base, 0,653 for top of culms. Values of bending strength (MOR), in green condition, were, generally, lower for base specimens and higher for top specimens. Bending strength values for unseasoned bamboo for G. velutina ranged from 7,5 MPa to 88,3 MPa; while G. amplexifolia were from 77,0 MPa to 102,1 MPa; and for G. aculeata, varied from 59,7 MPa to 89,2 MPa.

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          INFLUENCE OF AGE AND HEIGHT POSITION ON COLOMBIAN GUADUA ANGUSTIFOLIA BAMBOO MECHANICAL PROPERTIES

          The age of bamboo is a key factor that affects its mechanical properties. Bamboo Guadua angustifolia kunt (Guadua a.k.) has been used as a construction material in America, but the influence of the age and height position of the culm on the mechanical properties has not been studied in detail. In this study, selected mechanical properties of Guadua a.k from 2 to 5 year old culms, located at different heights, were investigated using international standard test procedures (ISO 22157). Based on the experimental results, it was found that the top portion (sobrebasa) showed the maximum strength and modulus of elasticity compared to the other portions, since this portion of bamboo has higher density. More over, density of Guadua a.k. culm has more influence in modulus of rupture in bending, than in any of the other studied mechanical properties. Regardless of the culm height, it seems that the mature age of Guadua angustifolia kunt is reached between 3 and 4 years old, because the mechanical properties at those ages were the highest and remained almost constant, whereas the mechanical properties of the culms at the age of 5 were the lowest.
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            Physical, chemical, and mechanical properties of bamboo and its utilization potential for fiberboard manufacturing

            X Li, XB Li, Li Li (2004)
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              Bamboo, The Gift of the Gods

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                Author and article information

                Journal
                mb
                Madera y bosques
                Madera bosques
                Instituto de Ecología A.C. (Xalapa, Veracruz, Mexico )
                1405-0471
                2448-7597
                August 2014
                : 20
                : 2
                : 111-125
                Affiliations
                [01] Jalapa Veracruz orgnameInstituto de Ecología,A.C. orgdiv1Red de Ambiente y Sustentabilidad México victor.ordonez@ 123456inecol.mx
                Article
                S1405-04712014000200010 S1405-0471(14)02000200010
                10.21829/myb.2014.202168
                1d05dacd-8db6-4484-b85f-daeef141787f

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 02 May 2014
                : 08 August 2013
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 32, Pages: 15
                Product

                SciELO Mexico

                Categories
                Artículos de investigación

                modulus of rupture,modulus of elasticity,bending,shear,compression,bamboo,módulo de ruptura,módulo de elasticidad,flexión,cortante,compresión,bambú

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