Work

Possible Synergism of High Temperature Fly Ash and Fluidized Bed Combustion Fly Ash in Cement Composites

Year: 2015

Type: article

Abstract: One of the possibilities how to activate fly ash in cement composites is to add calcium oxide as a chemical activator. This addition can improve pH of composites. Because fluidized bed combustion (FBC) fly ash contain around 15% of calcium oxide, we decided to add FBC fly ash into binder system of cement composite with classic fly ash.Three mixtures were designed. First one contain in binder system only cement and classic fly ash. In second and third mixture was part (25% resp. 50%) of classic fly ash replaced by FBC fly ash. Consistency, shrinkage, compressive strength and freeze-thaw resistance were tested. Microstructure was detected by XRD and TG analyses.

Source: Advanced materials research

DOI: 10.4028/www.scientific.net/amr.1106.29

Authors: Denisa Orsakova, Rudolf Hela, Petr Novosad, Jaroslav Valek

Institution: Brno University of Technology

Language: English

Topic: Concrete and Cement Materials Research

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: hybrid

Funders: Ministerstvo Průmyslu a Obchodu, Vysoké Učení Technické v Brně