Mostrar el registro sencillo del ítem

dc.contributor.advisorBrehm, Feliciane Andrade
dc.contributor.authorBersch, Rosângela Andréia
dc.date.accessioned2015-08-05T19:25:05Z
dc.date.accessioned2022-09-22T19:17:14Z
dc.date.available2015-08-05T19:25:05Z
dc.date.available2022-09-22T19:17:14Z
dc.date.issued2011-03-03
dc.identifier.urihttps://hdl.handle.net/20.500.12032/59100
dc.description.abstractThe crystallization of salts is an important and frequently observed pathology in masonry. However, it is still one of the least understood pathologies. The aim of this study is to evaluate the impact of florescence of soluble salts in ceramic blocks developed with phosphate sludge. For this purpose, blocks were molded with 0, 2.5% and 5% of phosphate sludge, which were sintered at temperatures of 750°C, 850°C, 950°C and 1050 ° C. The blocks were divided into two groups, one of which was kept under controlled temperature and humidity and the other was subjected to wetting and drying cycles. The groups were tested at 1, 30, 110 and 180 days. They were subjected to image analysis (binocular magnifying glass, graphic software and scanning electron microscopy), capillary water absorption, mercury intrusion porosimetry and flexural strength. The methods, x-ray diffraction, x-ray fluorescence and emission spectrometry, were used to investigate the phase and chemical composition. The results indicate the presence of aluminum, silicon, calcium, potassium, sulfur, iron and manganese, among which stands out the combination of sulfur and calcium. Thus, the gypsite is considered to be likely responsible for the soluble salts, whose deposits were found in varying extent and intensity, prevailing in the blocks with addition of waste. The variation in porosity and the apparent decrease in the coefficient of capillary absorption along the tests may be associated with the processes of solubilization and recrystallization. In cycling time studied, the phenomenon did not influence the mechanical strength of specimens.en
dc.description.sponsorshipPROSUP - Programa de Suporte à Pós-Gradução de Instituições de Ensino Particularespt_BR
dc.languagept_BRpt_BR
dc.publisherUniversidade do Vale do Rio dos Sinospt_BR
dc.rightsopenAccesspt_BR
dc.subjectFlorescênciapt_BR
dc.subjectEfflorescenceen
dc.titleAvaliação da ação da florescência em cerâmica vermelha com adição de lodo de fosfatizaçãopt_BR
dc.typeDissertaçãopt_BR


Ficheros en el ítem

FicherosTamañoFormatoVer
RosangelaBerschEngCivil.pdf4.573Mbapplication/pdfVer/

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem


© AUSJAL 2022

Asociación de Universidades Confiadas a la Compañía de Jesús en América Latina, AUSJAL
Av. Santa Teresa de Jesús Edif. Cerpe, Piso 2, Oficina AUSJAL Urb.
La Castellana, Chacao (1060) Caracas - Venezuela
Tel/Fax (+58-212)-266-13-41 /(+58-212)-266-85-62

Nuestras redes sociales

facebook Facebook

twitter Twitter

youtube Youtube

Asociaciones Jesuitas en el mundo
Ausjal en el mundo AJCU AUSJAL JESAM JCEP JCS JCAP