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Título: | Influence of the calcined paper sludge on the development of hydration heat in blended cement mortars |
Autor: | Rodríguez Largo, Olga CSIC ORCID CVN ; Frías, Moisés CSIC ORCID ; Sánchez de Rojas, María Isabel CSIC ORCID | Palabras clave: | hydration heat Paper sludge pozzolanic activity |
Fecha de publicación: | 2008 | Editor: | Springer Nature | Citación: | Journal of Thermal Analysis and Calorimetry 92(3): 865-871(2008) | Resumen: | [EN] The present study is based on the influence of the addition of a pozzolanic material as a result of the activation of an industrial waste coming from the Spanish paper industry on the heating as well as hydration heat of the cement mortars made with 10 or 20% of active addition. Once the sludge has been calcined at different temperatures (700–800°C) and stays in furnace (2 and 5 h), the calcined products showed high pozzolanic activity. The maximum activity corresponded to the paper sludge calcined at 700°C for 2 h (S1). Besides, it can be proved that there was an increase both of the heating and also of the hydration heat in the first 23–25 h for both additions (10 and 20% of S1) regarding the reference cement mortar. This behaviour would be related to the influence of different effects: filler and pozzolanic during the first hours of reaction, and by the dilution effect for longer hydration times, mainly when 20% of S1 was added. | Versión del editor: | http://dx.doi.org/10.1007/s10973-007-8270-x | URI: | http://hdl.handle.net/10261/36264 | DOI: | 10.1007/s10973-007-8270-x | ISSN: | 1388-6150 | E-ISSN: | 1572-8943 |
Aparece en las colecciones: | (IETCC) Artículos |
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