Production and properties of a medium density wood-cement boards produced with oriented strands and silica fume
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad del Bío Bío
2007
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| _version_ | 1876456325873926144 |
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| author | Vinicius Castro Gomes de |
| author_facet | Vinicius Castro Gomes de |
| contents | Production and properties of a medium density wood-cement boards produced with oriented strands and silica fume Vinicius Castro Gomes de Mário Souza Rabelo de Cláudio Henrique Menezzi Soares Del Agrociencias wood silica fume Pinus taeda cement board particle orientation Wood-cement board (WCB) is a panel product that has the advantages of inorganic and organicmaterials. However, the main problems affecting the manufacture and use of WCB are the inhibitoryeffects of wood on the setting of cement and the high specific gravity of the final product. This paperexamines the potential of strand orientation and the use of silica fume (SiO2) to facilitate the productionof a medium density WCB from Pinus taeda. Oriented wood-cement boards (OWCB) weremanufactured with wood/cement (w/w) ratio of 1:1, specific gravity 850 kg/m3; and SiO2 content ascement replacement of 0%, 10% and 20%. The OWCB were tested for static bending (MOR andMOE) properties in parallel (//) and perpendicular ( ) directions; internal bond (IB); compressionstrength parallel to surface (CP); thickness swelling (TS) and water absorption (WA). The resultsshowed that replacement of cement with 10% of SiO2, increased MOE (//), MOR (//) and CP and,decreased WA and TS, and most importantly eliminated the inhibitory effect of wood on cement setting.The principle of strand orientation was effective to produce boards with anisotropy in the flexuralproperties ranging form 2.1 to 2.8 for MOR and 2.6 to 3.8 for MOE. However, boards had very low IBstrength and this shortcoming must be addressed in future research. 2007 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48590201 en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.2 Vol.9 |
| format | Artículo científico |
| id | redalyc_48590201 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Universidad del Bío Bío |
| spellingShingle | Production and properties of a medium density wood-cement boards produced with oriented strands and silica fume Vinicius Castro Gomes de Agrociencias wood silica fume Pinus taeda cement board particle orientation Production and properties of a medium density wood-cement boards produced with oriented strands and silica fume Vinicius Castro Gomes de Mário Souza Rabelo de Cláudio Henrique Menezzi Soares Del Agrociencias wood silica fume Pinus taeda cement board particle orientation Wood-cement board (WCB) is a panel product that has the advantages of inorganic and organicmaterials. However, the main problems affecting the manufacture and use of WCB are the inhibitoryeffects of wood on the setting of cement and the high specific gravity of the final product. This paperexamines the potential of strand orientation and the use of silica fume (SiO2) to facilitate the productionof a medium density WCB from Pinus taeda. Oriented wood-cement boards (OWCB) weremanufactured with wood/cement (w/w) ratio of 1:1, specific gravity 850 kg/m3; and SiO2 content ascement replacement of 0%, 10% and 20%. The OWCB were tested for static bending (MOR andMOE) properties in parallel (//) and perpendicular ( ) directions; internal bond (IB); compressionstrength parallel to surface (CP); thickness swelling (TS) and water absorption (WA). The resultsshowed that replacement of cement with 10% of SiO2, increased MOE (//), MOR (//) and CP and,decreased WA and TS, and most importantly eliminated the inhibitory effect of wood on cement setting.The principle of strand orientation was effective to produce boards with anisotropy in the flexuralproperties ranging form 2.1 to 2.8 for MOR and 2.6 to 3.8 for MOE. However, boards had very low IBstrength and this shortcoming must be addressed in future research. 2007 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48590201 en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.2 Vol.9 |
| title | Production and properties of a medium density wood-cement boards produced with oriented strands and silica fume |
| topic | Agrociencias wood silica fume Pinus taeda cement board particle orientation |
| url | https://www.redalyc.org/articulo.oa?id=48590201 |