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Mechanical and durability properties of concretes manufactured with biomass bottom ash and recycled coarse aggregates
Highlights We made concrete with 100% recycled concrete and mixed aggregates. We manufacture three series with different amount of biomass bottom ashes. Mechanical properties were negatively with the addition of recycled aggregates. Durability properties declined with increasing recycled aggregates.
Abstract Recycled materials of various types have been used as substitutes for coarse recycled aggregates and natural sand in the manufacture of concrete. Generally, the values of mechanical and durability properties decreases when applying different replacements of natural aggregates with recycled aggregates in both fine and coarse granulometries. However, new waste from the combustion of biomass as bottom ash has not been applied as a substitute for fine aggregate in the manufacture of concrete. In this research, concrete consisting of recycled aggregate substitutions was manufactured by applying different replacement rates of natural sand with biomass bottom ash. An efficient dosage method can be applied to obtain an optimal ratio of recycled concretes made with biomass additions. Mechanical properties and durability were evaluated in order to know the possibilities of application of these recycled materials in real concretes. The results showed a worse behaviour in these properties, however these reductions were inferior than it can be expected, due to the appropriate manufacture of the concrete applied.
Mechanical and durability properties of concretes manufactured with biomass bottom ash and recycled coarse aggregates
Highlights We made concrete with 100% recycled concrete and mixed aggregates. We manufacture three series with different amount of biomass bottom ashes. Mechanical properties were negatively with the addition of recycled aggregates. Durability properties declined with increasing recycled aggregates.
Abstract Recycled materials of various types have been used as substitutes for coarse recycled aggregates and natural sand in the manufacture of concrete. Generally, the values of mechanical and durability properties decreases when applying different replacements of natural aggregates with recycled aggregates in both fine and coarse granulometries. However, new waste from the combustion of biomass as bottom ash has not been applied as a substitute for fine aggregate in the manufacture of concrete. In this research, concrete consisting of recycled aggregate substitutions was manufactured by applying different replacement rates of natural sand with biomass bottom ash. An efficient dosage method can be applied to obtain an optimal ratio of recycled concretes made with biomass additions. Mechanical properties and durability were evaluated in order to know the possibilities of application of these recycled materials in real concretes. The results showed a worse behaviour in these properties, however these reductions were inferior than it can be expected, due to the appropriate manufacture of the concrete applied.
Mechanical and durability properties of concretes manufactured with biomass bottom ash and recycled coarse aggregates
Beltrán, Manuel G. (author) / Agrela, Francisco (author) / Barbudo, Auxi (author) / Ayuso, Jesús (author) / Ramírez, Antonio (author)
Construction and Building Materials ; 72 ; 231-238
2014-09-14
8 pages
Article (Journal)
Electronic Resource
English
British Library Online Contents | 2014
|British Library Online Contents | 2014
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