Technology and properties of modified wood for low-rise construction

Abstract

Subject of research: the article considers a relatively new material for low-rise construction modified wood solid wood with directionally altered physical properties, the natural properties of which are improved as a result of the use of modern woodworking technologies.
 Purpose of research: to consider the technology of obtaining modified wood for low-rise construction with increased operational properties.
 Methods and objects of research: hardwood birch, wood from hard-to-feed conifers pine; the proposed technology for producing modified wood allows you to obtain a new material with indicators corresponding to hardwood, due to through impregnation of the log with a modifier an aqueous solution of carbamide.
 Main results of research: the technology of obtaining modified wood increases its operational properties, when drying modified wood, the moisture content of wood decreases to 8 %, the content of carbamide in wood after impregnation is up to 8-10 %, density 700-730kg/ m3, strength 100-123MPa, during the pressing process, the height of the bars of modified wood decreases to 40 %, while the transverse dimensions of the bars of modified wood remain the original.