AN INVESTIGATION OF THE EFFECTIVENESS AND DURABILITY CHARACTERISTIC OF BIOMASS ASHES AS POZZOLANIC MATERIALS
Author(s): Demis, S., Rodrigues, C. S., Santos, L. A. and Papadakis, V. G.
Paper category: Conference
Book title: XIII International Conference on Durability of Building Materials and Components - XIII DBMC
Editor(s): Marco Quattrone, Vanderley M. John
Print ISBN: none
Publication year: 2015
Total Pages: 8
Abstract: Utilisation of biomass ash from agro-industrial by-products in cement and concrete manufacturing can be an alternative solution to the incorporation of traditionally used supplementary cementing materials (SCMs). These agro-waste ashes, containing large amount of silica in amorphous form, have potential for use as pozzolanic materials replacing cement. An evaluation of a variety of biomass ashes with varying SiO2 contents in terms of concrete strength (as approached by estimating the efficiency factors) and in carbonation and chloride penetration tests is the focus of this study. Results indicate that these materials are effective on concrete strength development and extremely efficient in reducing the concrete permeability and resistivity especially against chloride ingress. The dependency of this behavior on the level of SiO2 of the ash content was examined in depth and was concluded that it is affected as well by the composition of other components of the biomass ash.
Online publication: 2015
Publication Type: full_text
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