Characterization and properties of blended cement matrices containing activated bamboo leaf wastes
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
01/10/2013
01/10/2013
01/10/2012
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Resumo |
The worldwide production of bamboo generates large volumes of leaf wastes, which are deposited in landfills or burned in an uncontrolled manner, with negative effects in the environment. The ash obtained by calcining of the bamboo leaf waste, shows good qualities as supplementary cementing material for the production of blended cements. The current paper shows a detailed scientific study of a Brazilian bamboo leaf ash (BLA) calcined at 600 degrees C in small scale condition, by using different techniques (XRF, XRD, SEM/EDX, FT-IR, TG/DTG) and technical study in order. to analyse the behaviour of this ash in blended cements elaborated with 10% and 20% by mass of BLA. The results stated that this ash shows a very high pozzolanic activity, with a reaction rate constant K of the order of 10(-1)/h and type I CSH gel was the main hydrated phase obtained from pozzolanic reaction. The BLA blended cements (10% and 20%) complied with the physical and mechanical requirements of the existing European standards. (c) 2012 Elsevier Ltd. All rights reserved. |
Identificador |
CEMENT & CONCRETE COMPOSITES, OXFORD, v. 34, n. 9, pp. 1019-1023, OCT, 2012 0958-9465 http://www.producao.usp.br/handle/BDPI/33873 10.1016/j.cemconcomp.2012.05.005 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCI LTD OXFORD |
Relação |
Cement and Concrete Composites |
Direitos |
restrictedAccess Copyright ELSEVIER SCI LTD |
Palavras-Chave | #BAMBOO LEAF ASH #POZZOLANIC ACTIVITY #REACTION KINETICS #BLENDED CEMENT #TECHNICAL PROPERTIES #SUGAR-CANE STRAW #KINETIC-DIFFUSIVE MODEL #POZZOLANIC REACTION #PORTLAND-CEMENT #CALCINING TEMPERATURE #REACTION-PRODUCTS #ASH #HYDRATION #PARAMETERS #METAKAOLIN #CONSTRUCTION & BUILDING TECHNOLOGY #MATERIALS SCIENCE, COMPOSITES |
Tipo |
article original article publishedVersion |