{"id":636,"date":"2011-01-19T02:09:16","date_gmt":"2011-01-19T02:09:16","guid":{"rendered":"http:\/\/envafs.dungnq.local\/2011\/01\/19\/wood-properties-of-some-commercial-tree-species-for-the-central-north-region-of-vietnam\/"},"modified":"2011-01-19T02:09:16","modified_gmt":"2011-01-19T02:09:16","slug":"wood-properties-of-some-commercial-tree-species-for-the-central-north-region-of-vietnam","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/wood-properties-of-some-commercial-tree-species-for-the-central-north-region-of-vietnam\/","title":{"rendered":"Wood properties of some commercial tree species for the central North region of Vietnam"},"content":{"rendered":"

\nLe Thu Hien, Do Van ban, Le Qui Thang<\/span><\/strong> <\/span><\/span><\/em>\n<\/p>\n

\n<\/span><\/em>Forest<\/span><\/em> Plant Resources Research Division<\/span><\/em><\/em>            <\/span><\/span>\n<\/p>\n

\nThere are 13 species in the list of popular commercial tree species for planting in the Central North of Vietnam, of which wood properties of 8 species have been researched. The methodology complied with the national stardards of Vietnam, from TCVN 358-70 to TCVN 370-70.<\/span>\n<\/p>\n

\nStyrax tonkinensis <\/span><\/em>(Pierre) Craib ex Hardw: Wood density was very low (420 kg\/m3<\/sup>). <\/span>Volume shrinkage coefficient was medium (0,36). Fiber saturation point was low (24%). Crushing strength, static bending resistance and  <\/span>resistance to splitting were weak (261 kg\/cm2<\/sup>, 623 kg\/cm2<\/sup> and 6 kg\/cm respectively). Impact bending coefficient was medium (0,7). Wood can be used for low-price furniture, construction as well as materials for match production or packing<\/span>            <\/span><\/span>\n<\/p>\n

\n<\/span>Acacia auriculiformis<\/span><\/em> A.Cunn.: Wood density was low (597 kg\/m3<\/sup>). Volume shrinkage coefficient, crushing strength and resistance to splitting were medium (0,41, 462 kg\/cm2<\/sup> and 11 kg\/cm respectively). Static bending resistance was weak (1.009 kg\/cm2<\/sup>). Impact bending coefficient was high (1,2). Wood in large size can be used for construction or materials for art and handycraft production. Small-size wood is used for material for paper and MDF production or mine poles.<\/span>\n<\/p>\n

\nAcacia hybrid (Acacia mangium<\/span><\/em> x Acacia auriculiformis)<\/em>: Wood density was low (574 kg\/m3<\/sup>). Volume shrinkage coefficient was medium (0,39). Crushing strength and static bending resistance were weak (417 kg\/cm2<\/sup> and 1.013 kg\/cm2<\/sup> respectively). Resistance to splitting was medium (12 kg\/cm). Timber is used for materials for paper making, MDF and mine poles.<\/span>\n<\/p>\n

\nAcacia mangium<\/span><\/em> Willd.: Wood density was low (586 kg\/m3<\/sup>). Volume shrinkage coefficient was medium (0,46). Crushing strength and resistance to splitting were medium (432 kg\/cm2<\/sup> and 12,7kg\/cm, respectively). Static bending resistance was weak (994 kg\/cm2<\/sup>). Timber in large sizes can be used for construction or furniture while timber in small size is used for materials for paper making, MDF and mine poles. <\/span>\n<\/p>\n

\nMangletia conifera<\/span><\/em> Dandy: Wood density was very low (480 kg\/m3<\/sup>). <\/span>Volume shrinkage coefficient, c<\/span>rushing strength and static bending resistance were medium (0,43, 611 kg\/cm2<\/sup> and 1.232 kg\/cm2 <\/sup>respectively). Timber in large sizes can be used as materials for furniture, <\/span><\/span>h<\/span>orizontal lacquered board<\/span>, w<\/span>orshipping object<\/span>s, pencil production and mine poles. Sapwood has to be preserved before utilization.<\/span>\n<\/p>\n

\nCanarium album Lour<\/span><\/em>. Raeusch: Wood density was low (590 kg\/m3<\/sup>). Volume shrinkage coefficient was medium (0,44). Crushing strength, static bending resistance and resistance to splitting were weak (347 kg\/cm2<\/sup>, 1.080 kg\/cm2<\/sup> and 5,4 kg\/cm respectively). Impact bending coefficient was rather high (0,8). Wood is used for normal construction, low-price furniture, and materials for plywood. <\/span>\n<\/p>\n

\nMelia azedarach<\/span><\/em> L.: Wood density was low <\/span>(5<\/span>24 <\/span>kg\/m3<\/sup>). <\/span>Volume shrinkage coefficient was medium <\/span>(0,44). <\/span>Fiber saturation point was low <\/span>(22%). <\/span>Crushing strength and static bending resistance were weak <\/span>(335 kg\/cm2<\/sup><\/span> and <\/span>627 kg\/cm2<\/sup><\/span> respectively)<\/span>. <\/span>Resistance to splitting was medium <\/span>(10,5kg\/cm<\/span>).<\/span> <\/span>Impact bending coefficient was weak <\/span>(0,54). <\/span>Wood can be used as materials for normal construction, low-price furniture or farming tools.<\/span>\n<\/p>\n

\nDendrocalamus membranaceus<\/span><\/em> Munro: Wood density was high (842 kg\/m3<\/sup>). Volume shrinkage coefficient, crushing strength and static bending resistance were medium (0,68, 681 kg\/cm2<\/sup> and 1.349 kg\/cm2<\/sup> respectively). Tensile strength was very high (1.781 kg\/cm2<\/sup>). It can be used as materials for partical board, normal construction, handycraft production or paper making Keywords: wood density, volume shrinkage coefficient, crushing strength, static bending resistance and tensile strength . <\/span> <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\nThere are 13 species in the list of popular commercial tree species for planting in the Central North of Vietnam, of which wood properties of 8 species have been researched. The methodology complied with the national stardards of Vietnam, from TCVN 358-70 to TCVN 370-70.<\/span><\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/636"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/comments?post=636"}],"version-history":[{"count":0,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/636\/revisions"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=636"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=636"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}