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Communication Dans Un Congrès Année : 2023

Investigation on Monopetalanthus behavior wood from Gabonese forest, during a natural moistening and drying phases

Résumé

This work deals with the study of physico-mechanical behaviour of Monopetalanthus (Andoung) specie from Gabonese forest under natural moistening and drying phases. Wood which is generally used for the conception of footbridges in Gabon and therefore exposed to the weather conditions. Some pieces of this specie have been sized following its radial and tangential plane. In the first, the section of each specimen has been analysed by using a scanning electron microscope to have maps of the internal arrangement of cells of this specie according to RT and TL axis planes. Then physical tests (drying and moistening) have been done on specimens in a room where condition of temperature T (°C) and pressure P (mmHg) are considered constant. The principal parameters followed during the tests are: (i) the dimensions of the radiale plane (R, T)(b, h) and (ii) the weight of each specimen studied. The results show a link between the variations of water in the specimen and its geometrical parameters. Specifically, a pronounced effect of drying and moistening on its dimensional variations before the Fiber Saturation Point (FSP). This work is the beginning of a series of studies conducted on several species endemic to the Gabonese forest and whose use in structures is proven. The goal is to provide a database of their intrinsic characteristics for better structural design.
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Dates et versions

hal-04366397 , version 1 (28-12-2023)

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  • HAL Id : hal-04366397 , version 1

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Rostand Moutou Pitti, Claude Feldman Pambou Nziengui, Nicaise Manfoumbi, Corneliu Marius Craciunescu, Ioana Ionel. Investigation on Monopetalanthus behavior wood from Gabonese forest, during a natural moistening and drying phases. 31st European Biomass Conference & Exhibition (EUBCE 2023), Université de Bologne, Jun 2023, Bologne (ITA), Italy. ⟨hal-04366397⟩
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