Compounding and technological methods for increasing the efficiency of wood matrix mineralization

Abstract

This paper presents the results of a study of the efficiency of mineralization of the plant matrix of pine wood samples by immersion of experimental samples in an organo-mineral water suspension (dispersion medium) and holding for 24 hours under natural conditions, as well as under autoclave impregnation at an excess pressure of up to 1.5 MPa. To create the necessary working pressure in the autoclave, an inert gas (argon) was used. As working fluids, we used an aqueous solution of arabinogalactan, aqueous suspension containing polymineral sand, pre-dispersed to a fine state and a soluble complex obtained by mechanical mixing of the above components. Prototypes were made from ordinary pine wood. The effectiveness of impregnation was evaluated by increasing the density of samples. In addition, data on changes in Brinell hardness, compressive strength of samples along the fibers, and water absorption of impregnated wood were obtained. It was found that autoclaving in the studied mode leads to an increase in the density of samples by more than two times, reduces their water absorption, and increases strength by 84%.

Estimation of the Efficiency of Mechanical Activation of Silica-Containing Rocks

“…Перспективным направлением в области модификации строительных материалов из древесины является искусственное окаменение, технология которого заключается в обработке древесных материалов растворимым комплексом, повышающим устойчивость к гниению, воздействию биологических организмов и увеличивающим прочностные свойства материалов из растительного сырья [1]. Основой управляемого процесса минерализации древесной матрицы является использование органоминерального двухкомпонентного растворимого комплекса «арабиногалактан-кварцсодержаший полиминеральный песок» [2]. Структурообразование и химическая активность данного соединения во многом определяется активностью кремнеземсодержащего сырья [3].…”