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Interaction of dispersed polyvynil acetate with silicate in finishing materials

R. F. Runova、A. A. Maistrenko1996-12-01Materiales de Construccion

This article focuses on the processes of interaction between calcium silicate hydrates and dispersed polyvinyl acetate in tight films with the aim of developing compounds meant for restoration and finishing works. The basis of this development relies on the concept concerning the determining role of the crystal-chemic…

La realcalinización y la extracción electroquímica de los cloruros en las construcciones de hormigón armado

Luca Bertolini、Fabio Bolzoni、Bernhard Elsener 等 5 位作者1996-12-01Materiales de Construccion

Realkalisation and electrochemical chloride removal techniques, developed for rehabiliting carbonated and chloride-containing structures, are presented. Electrolysis and electromigration mechanisms and consequences as well as electrochemical conditions at the reinforcement surface are discussed and compared with catho…

DEF: As a form of sulfate attack

J. Skalny、V. Johansen、N. Thaulow 等 4 位作者1996-12-01Materiales de Construccion

Delayed ettringite formation (DEF) is the term used to describe expansion of some heat cured portland cement concretes. Although meaningful progress has been made, the exact mechanism of the expansion itself is not entirely understood. The ettringite reformation is enabled, primarily, by thermal decomposition of ettri…

The use of vulcanic glasses in cellular concrete

J. L. Alvarez、N. Vega1996-12-01Materiales de Construccion

This paper covers studies made using different mixes for cellular concrete variating silica sand, vulcanic glass and aluminium powder contents. Studies on compressive strenght, dry density and X-ray diffraction are performed on autoclave cured cellular concrete, concluding that best results are attained when vulcanic…