Light-weight wood¨Cmagnesium oxychloride cement composite building products made by extrusion

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• 作者：Xiangming  ; Zhou^a ;   ; ^{Xiangming.Zhou@brunel.ac.uk} ; Zongjin  ; Li^b ;   ; ¹ ;   ; ^{zongjin@ust.hk}
• 关键词：Magnesium oxychloride (MOC) cement ; Extrusion ; Die swell ; Wood&ndash ; cement composite ; Nailing ability ; Perlite ; Sawdust
• 刊名：Construction and Building Materials
• 出版年：2012
• 出版时间：February 2012
• 年：2012
• 卷：27
• 期：1
• 页码：382-389
• 全文大小：1143 K

文摘

Magnesium oxychloride (MOC) cement is a type of non-hydraulic cement with yellowish color in nature and low alkalinity exhibiting many other properties superior to Portland Cement (PC). In this study, light-weight wood¨CMOC cement composite building products, with sawdust and/or perlite as aggregate, were made through extrusion. Physical, nailing and mechanical properties of these composites were investigated. It was found that the specific dry densities of the wood¨CMOC cement composites were close to 1.0 and they were nailable like hard natural wood. Their flexural strength decreased as temperature increased. By replacing 50 % sawdust in weight by perlite, the composite exhibited less die swell and better performance in resisting high temperature.