文献类型：期刊文献

英文题名：Feasibility of manufacturing cross-laminated timber using fast-grown small diameter eucalyptus lumbers

作者：Liao, Yuchao[1] Tu, Dengyun[1] Zhou, Jianhui[2] Zhou, Haibin[3] Yun, Hong[1] Gu, Jin[1] Hu, Chuanshuang[1]

第一作者：Liao, Yuchao

通信作者：Tu, DY[1];Hu, CS[1]

机构：[1]South China Agr Univ, Dept Wood Sci & Engn, Coll Mat & Energy, Guangzhou 510642, Guangdong, Peoples R China;[2]Univ New Brunswick, Fac Forestry & Environm Management, Fredericton, NB E3B 5A3, Canada;[3]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 10091, Peoples R China

年份：2017

卷号：132

起止页码：508-515

外文期刊名：CONSTRUCTION AND BUILDING MATERIALS

收录：;EI(收录号：20165203167246);Scopus(收录号：2-s2.0-85006778526);WOS:【SCI-EXPANDED(收录号:WOS:000393002700049)】；

基金：This study was financially supported by the Department of Education of Guangdong Province (Project No. YQ2013029) and the State Key Lab of Subtropical Building Science, South China University of Technology.

语种：英文

外文关键词：Cross-laminated timber; Eucalyptus; Mechanical properties; Failure modes

摘要：Eucalyptus is one of the most important plantation species in South China. Alternate applications of plantation grown hardwood such as eucalyptus need to be developed due to decreased demands of fibers for pulp and paper industry. The feasibility of manufacturing three-layer cross-laminated timber (CLT) using fast-grown small diameter eucalyptus wood (Eucalyptus urophylla x Eucalyptus grandis) was evaluated in this study. L-9 (3(3)) orthogonal tests with three factors and three levels were adopted to study the effects of adhesive spread rate, pressure, and pressing time duration on the block shear strength (BSS), wood failure percentage (WFP), and rate of delamination (RD) of CLT via block shear tests and cyclic delamination tests. The results indicated that the optimal pressing parameters were adhesive spread rate of 160 g/m(2), pressing pressure of 0.8 MPa, and pressing time duration of 200 min with one-component polyurethane adhesive used. The values of modulus of elasticity (MOE) and modulus of rupture (MOR) in the major and minor strength directions of CLT were 11,466 MPa, 24.5 MPa, 681 MPa, and 8.6 MPa, respectively. The values of transverse shear moduli and interlaminar shear strength in the major and minor strength directions of CLT were 91.8 MPa, 1.3 MPa, 241.6 MPa, and 0.5 MPa, respectively. The mechanical properties of eucalyptus CLT were equivalent to those of commercially available softwood CLT. These results indicate CLT panels manufactured from fast-grown small diameter eucalyptus lumber is promising for structural applications. (C) 2016 Elsevier Ltd. All rights reserved.