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Samani, Ajmal
- Performance Evaluation of Bambusa Tulda Treated with Different Fire Retardant Compositions
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Indian Forester, Vol 135, No 9 (2009), Pagination: 1202-1208Abstract
The present paper deals with the treatment of Bambusa tulda with ten different fire retardant-cum-preservative compositions to offer protection against fire. The performance of treated bamboo against fire was tested for flame penetration, inflammability and rate of burning test as per Indian standards. Bambusa tulda treated with only four compositions passed all fire retardant tests.Keywords
Bambusa Tulda, Fire Retardant, Flame Penetration, Inflammability, Rate of Burning.
- Treatment of Green Round Bamboos with and without Boring by Pressure Treatment and Alternate Pressure Method (APM)
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Preservatives, Pressure Treatment, Alternate Pressure Method (APM)
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Indian Forester, Vol 134, No 7 (2008), Pagination: 932-936Abstract
Bamboos are versatile material for countless applications. Their wider use for construction is encouraged because of growing scarcity of timbers. Since it has a very low natural durability, protection against biological degradation is of vital importance for long-term services. Protective measures without chemicals are preferable, but often limited in their effectiveness. For using preservatives, the restricted permeability of culms tissue, choice of preservative and treatment method and environmental effects as well as economical aspects have to be considered. Treatment of Dendrocalamus strictus and Bambusa nutans in green round form with holes revealed higher retentions of copper-chrome-arsenic (CCA) than bamboo without holes by Alternate pressure method. Lower retentions were recorded in both the species treated by full cell process.Keywords
Bamboo, Dendrocalamus strictus, Bambusa nutans, Preservation, Protection,Preservatives, Pressure Treatment, Alternate Pressure Method (APM)
- Effect of Relative Humidity on Gloss of Preservative Treated Finished Wood
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Indian Forester, Vol 136, No 1 (2010), Pagination: 123-128Abstract
The effect of relative humidity on performance of different finishes is evaluated on preservative treated mango wood on the basis of gloss values. Per cent loss in gloss of samples finished with clear varnish is much higher than other finishes applied on preservative treated samples. A comparison of loss in gloss values with and without preservative treatment is also reported. The per cent loss of gloss is least in the case of linseed oil polished samples.Keywords
Clear Varnish, Gloss, Linseed Oil, Sprit Polish, Relative Humidity, Waxpolish- Effect of Weathering on Preservative Treated Finished Wood
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Indian Forester, Vol 137, No 9 (2011), Pagination: 1089-1091Abstract
The effect of weathering on performance of different finishes is evaluated on preservative treated mango wood on the basis of gloss values. Per cent loss in gloss of samples finished with clear varnish is much higher than other finishes applied on preservative treated samples. A comparison of loss in gloss values with and without preservative treatment is also reported. The percent loss of gloss is lowest in the case of linseed oil polished samples.Keywords
Clear Varnish, Gloss, Linseed Oil, Sprit Polish, UV Radiations, Wax Polish- Gloss Reduction by UV Exposure of Preservative Treated Finished Wood
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Indian Forester, Vol 136, No 11 (2010), Pagination: 1545-1549Abstract
The Effect of UV radiation on the performance of different finishes on preservative treated mango wood is evaluated on the basis of gloss values. Per cent loss in gloss of samples finished with clear varnish is much higher than other finishes applied on preservative treated and untreated samples. A comparison of loss in gloss values with and without preservative treatment is also reported. The per cent loss of gloss is lowest in the case of linseed oil finished samples.Keywords
Clear Varnish, Gloss, Linseed Oil, Sprit Polish, Uv Radiations, Wax Polish- Effect of Different Pressure Treatment Methods on Dimensional Stabilization of Chemically Modified Pinus radiata Wood
Abstract Views :224 |
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Authors
Affiliations
1 Wood Preservation Discipline, Forest Products Division Forest Research Institute, Dehradun, IN
1 Wood Preservation Discipline, Forest Products Division Forest Research Institute, Dehradun, IN
Source
Indian Forester, Vol 142, No 7 (2016), Pagination: 675-679Abstract
Wood is dimensionally unstable and hygroscopic in nature due to presence of large number of hydroxyl groups in the polymeric constituents. Chemical modification is one way of improving this property and acetylation provides dimensional stability to wood, due to cell wall bulking. In the present study Pinus radiata wood samples were modified with pyridine catalyzed acetic anhydride by combination of pressure and heat treatment for different time periods. Weight Percentage Gain, Volumetric Swelling Coefficient and Anti-Swelling Efficiency were determined. Samples were immersed in waterfora time period of 1hr to 120hrs to calculate Volumetric Swelling Coefficient and Anti-Swelling Efficiency for estimating dimensional stability. Schedule of applying pressure of 20lbs per inch2 at 120 °C for 1hr showed maximum dimensional stability.Keywords
Chemical Modification, Acetic Anhydride, Pressure Treatment, Weight per Cent Gain, Volumetric Swelling Coeffident, Anti-Swelling Effidency.References
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