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New Construction Materials: Calcined Paper Sludges as Active Additions

AuthorsFrías, Moisés ; Rodríguez, O.; Sánchez de Rojas, María Isabel; Ferreiro, S.; Nebreda, B.; Olmeda, J.
Compressive Strength
Paper Sludge
Pozolanic Activity
Setting Time
Issue DateJan-2010
PublisherTrans Tech Publications
CitationAdvanced Materials Forum 636-637: 1222(2010)
Abstract[EN] This paper shows the possibility of reutilize paper sludge waste as supplementary cementing material for the cement manufacture. This industrial waste consists essentially of a mixture of organic matter (30%) and inorganic compound, such as calcite and clay minerals. The raw paper sludge does not present pozolanic properties, but once calcined at 650ºC during 2 hours, exhibits a good pozolanic activity. Calcined paper sludge was used as partial Portland cement replacements of 0 and 10%. It was a sligth increment in compressive strength for 10 % of substitution from 7 days on. Furthermore, calcined paper sludge reduces the initial and final setting times of cement paste.
Publisher version (URL)http://dx.doi.org/ 10.4028/www.scientific.net/MSF.636-637.1222
Appears in Collections:(IETCC) Artículos
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