文献类型：期刊文献

英文题名：Development of a new magnesium oxychloride cement board by recycling of waste wood, rice husk ash and flue gas desulfurization gypsum

作者：He, Zhihai[1,2];Han, Xudong[1];Zhang, Yu[3];Zhang, Zedi[4];Shi, Jinyan[4];Gencel, Osman[5]

机构：[1]Shaoxing Univ, Coll Civil Engn, Shaoxing 312000, Peoples R China;[2]Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Peoples R China;[3]Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Peoples R China;[4]Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China;[5]Bartin Univ, Civil Engn Dept, TR-74100 Bartin, Turkey

年份：2022

卷号：61

外文期刊名：JOURNAL OF BUILDING ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000865413100001)、、EI(收录号：20223712739651)、Scopus(收录号：2-s2.0-85137756520)、WOS

基金：Acknowledgement The authors would like to acknowledge the Natural Science Foundation of Zhejiang Province (Grant No. LY20E020006) , the In- ternational Scientific and Technological Cooperation Project of Shaoxing University (Grant No. 2019LGGH1009) and National Natural Science Foundation of China (Grant No. 51602198) for their financial support to the work present in this paper.

语种：英文

外文关键词：Sustainability; Magnesium oxychloride cement; Cement board; Waste wood; Carbon emission

外文摘要：Recycling construction waste wood to produce magnesium oxychloride cement board (MOCB) is an eco-friendly and high-value strategy. The effects of extrusion force, admixtures, wood fiber content and size on the physical and mechanical properties of MOCB were systematically investigated in this study. The results show that an appropriate increase in the wood fiber content in MOCB can not only reduce the density but also increase its flexural strength, but the pulling force decreases due to the reduction of compactness. Meanwhile, the small-sized wood fiber is beneficial to the increase of density and pulling force of MOCB, and the appropriate increase of wood fiber size can improve its flexural strength and water resistance. Increasing the extrusion force can also enhance the flexural strength and pulling force by increasing the compactness of the sample, but it is detrimental to the development of water resistance. Appropriate amount of rice husk ash (RHA) can improve the mechanical properties and water resistance of MOCB. The incorporation of flue gas desulfurization gypsum (FG) reduces the strength of MOCB, but its water resistance is improved. In addition, RHA and FG-modified MOCBs indicate better environmental benefits and performance indicators (Thickness swelling and water absorption) compared to conventional resin-based particleboard and Portland cement-based particleboard. This study provides not only strategies for recycling waste wood, but also technical parameters for producing eco-friendly cement composite boards.