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Improvement of termite resistance, dimensional stability and mechanical properties of pine wood by paraffin impregnation

dc.contributor.authorEsteves, Bruno
dc.contributor.authorNunes, Lina
dc.contributor.authorDomingos, Idalina
dc.contributor.authorPereira, Helena
dc.date.accessioned2016-11-16T10:12:22Z
dc.date.available2016-11-16T10:12:22Z
dc.date.issued2014-09
dc.description.abstractParaffin has been used as surface protection of wood throughout the ages but its use for impregnation to improve wood resistance to biodegradation is recent. This study determined the main improvements on wood properties with paraffin impregnation. Healthy Pinus pinaster Ait. wood was impregnated with paraffin at different levels using a hot–cold process. Weight gain, equilibrium moisture content and dimensional stability (ASE) at 35 and 65 % relative humidity, termite durability against Reticulitermes grassei (Clément), bending strength, bending stiffness (MOE) and Janka hardness were determined. Density increased from 0.57 to 0.99, ASE ranged between 38–96 % and 16–71 % for 35 and 65 % relative humidity, respectively. Equilibrium moisture content decreased from 9.9 and 12.0 % to 0.8 and 3.6 % for 35 and 65 % relative humidity. Termite durability improved from level 4 to level 3 of attack, and higher termite mortality was found in treated wood (52 % against 17 %). Bending strength (MOR) increased with paraffin weight gain, reaching a 39 % increase. MOE also increased by about 13 % for wood with a weight gain around 80 %. Janka hardness increased significantly reaching about 40 % for wood with 80 % weight gain. Paraffin impregnated wood has improved properties with regard to equilibrium moisture content, dimensional stability and density, bending strength and Janka hardness, and resistance against termites.pt_PT
dc.identifier.citationEsteves, B., Nunes, L., Domingos, I., & Pereira, H. (2014). Improvement of termite resistance, dimensional stability and mechanical properties of pine wood by paraffin impregnation. European Journal of Wood and Wood Products, 72(5), 609–615.pt_PT
dc.identifier.doi10.1007/s00107-014-0823-7pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.19/3421
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.subjectmechanical propertiespt_PT
dc.subjectmodified woodpt_PT
dc.subjectparaffin impregnationpt_PT
dc.subjectPinus pinasterpt_PT
dc.subjecttermitespt_PT
dc.titleImprovement of termite resistance, dimensional stability and mechanical properties of pine wood by paraffin impregnationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage615pt_PT
oaire.citation.startPage609pt_PT
oaire.citation.titleEuropean Journal of Wood and Wood Productspt_PT
oaire.citation.volume72(5)pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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