Extractive contents of two woods and cork of Portuguese origin and the interaction of these substrates with cement suspensions


Data are presented on the extractive contents of blue gum, maritime pine, and cork as an initial attempt to predict the level of compatibility of these substrates with Portland cement. In order to cover a range of polarities, several organic solvents were applied, as well as water. Moreover, to simulate the chemical environment of a cement suspension, aqueous NaOH, Ca(OH)(2), and the filtrate of a cement suspension were also used as extracting agents. The levels of neutral solvent extractives are discussed, but the results obtained with alkaline extracting agents suggest that, when the woods or cork are mixed with a cement suspension, cations are adsorbed onto the substrate surfaces, and are therefore, subtracted from the solution. The phenomenon is proposed as an explantion, among others, of the impairment of cement hardening when mixed with fairly compatible or incompatible wood species.




Forestry; Materials Science


Pereira, C; Jorge, FC; Irle, MA; Ferreira, JM

nossos autores

Partilhe este projeto

Publicações similares

Usamos cookies para atividades de marketing e para lhe oferecer uma melhor experiência de navegação. Ao clicar em “Aceitar Cookies” você concorda com nossa política de cookies. Leia sobre como usamos cookies clicando em "Política de Privacidade e Cookies".