Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Flexural Strength of Incised Rubber-Wood (Hevea Brasiliensis Muel. Arg.) Treated with Creosote Oil and Liquefied Biomass
The influence of incision and chemical treatments on the flexural strength of Hevea brasiliensis (Rubber-wood) was examined. Clear samples of dimension 20mm × 20mm × 300mm were prepared and selected as specified in American Standards for Testing Materials (ASTM) standards. Incision was done with a mechanical incisor at a length and depth 7mm and 3mm respectively. Three levels of incision densities (666.6, 1000 and 2 0 1333 incisions/m) were used. Test samples were oven-dried at 103±2 C for 24 hr. untreated samples, serving as the control, were maintained at 12 % moisture content. Creosote oil and liquefied biomass were used as preservatives to treat the wood samples using the cold-soaking method. Parameters such as absorption and retention were measured. Flexural strength; modulus of rupture (MOR) and modulus of elasticity (MOE) of the wood samples were tested on Housefield Tensiometer. Results showed that rubber-wood treated with creosote oil had a mean absorption and 3 retention of 29.94 %, and 1.22 Kg/m respectively while the liquefied biomass treated samples had 58.61 % and 2.38 Kg/m3 for absorption and retention respectively. Incision had a significant effect (p0.05) on absorption and retention of rubber-wood. However, greater losses in strength 2 2resulted from combining incision with the preservative chemicals. Higher strength loss in MOE (6847.12 N/mm ) and MOR (57.76 N/mm) 2 2 ensued with the use of liquefied biomass compared with creosote oil with 8703.46 N/mm and 83.25 N/mm for MOE and MOR respectively. This is an indication that rubber-wood has a higher absorption and retention of waterborne preservatives (liquefied biomass) but lower values for creosote oil. However, its strength properties were highly affected with the use of liquefied biomass preservative. Keywords: Rubber-wood, Creosote oil, Liquefied biomass, incision, flexural strength
Flexural Strength of Incised Rubber-Wood (Hevea Brasiliensis Muel. Arg.) Treated with Creosote Oil and Liquefied Biomass
The influence of incision and chemical treatments on the flexural strength of Hevea brasiliensis (Rubber-wood) was examined. Clear samples of dimension 20mm × 20mm × 300mm were prepared and selected as specified in American Standards for Testing Materials (ASTM) standards. Incision was done with a mechanical incisor at a length and depth 7mm and 3mm respectively. Three levels of incision densities (666.6, 1000 and 2 0 1333 incisions/m) were used. Test samples were oven-dried at 103±2 C for 24 hr. untreated samples, serving as the control, were maintained at 12 % moisture content. Creosote oil and liquefied biomass were used as preservatives to treat the wood samples using the cold-soaking method. Parameters such as absorption and retention were measured. Flexural strength; modulus of rupture (MOR) and modulus of elasticity (MOE) of the wood samples were tested on Housefield Tensiometer. Results showed that rubber-wood treated with creosote oil had a mean absorption and 3 retention of 29.94 %, and 1.22 Kg/m respectively while the liquefied biomass treated samples had 58.61 % and 2.38 Kg/m3 for absorption and retention respectively. Incision had a significant effect (p0.05) on absorption and retention of rubber-wood. However, greater losses in strength 2 2resulted from combining incision with the preservative chemicals. Higher strength loss in MOE (6847.12 N/mm ) and MOR (57.76 N/mm) 2 2 ensued with the use of liquefied biomass compared with creosote oil with 8703.46 N/mm and 83.25 N/mm for MOE and MOR respectively. This is an indication that rubber-wood has a higher absorption and retention of waterborne preservatives (liquefied biomass) but lower values for creosote oil. However, its strength properties were highly affected with the use of liquefied biomass preservative. Keywords: Rubber-wood, Creosote oil, Liquefied biomass, incision, flexural strength
Flexural Strength of Incised Rubber-Wood (Hevea Brasiliensis Muel. Arg.) Treated with Creosote Oil and Liquefied Biomass
Olaniran, O S (Autor:in) / Olufemi, B (Autor:in)
16.09.2015
Applied Tropical Agriculture; Volume 20 Number 1 2015; 57-61
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
690
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