The effect of peat and wood fly ash on the porosity of mortar
| Autor: | Jouni Rissanen, Paivo Kinnunen, Mirja Illikainen, Mirco Marcellini, Maria Letizia Ruello, Chiara Giosuè, Katja Ohenoja, Francesca Tittarelli |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Fluidized bed combustion
Absorption of water 0211 other engineering and technologies Coal combustion products 020101 civil engineering 02 engineering and technology 0201 civil engineering Water vapor permeability 021105 building & construction General Materials Science Coal Civil and Structural Engineering Cement business.industry Metallurgy Biomass fly ash Building and Construction Compressive strength Fly ash Environmental science Capillary water absorption Drying shrinkage Cementitious Mortar business Porosity |
| Popis: | Fluidized bed combustion fly ash (FBCFA), notably different from regular (coal) fly ash, is a promising industrial side stream to be used as a supplementary cementitious material (SCM). Peat and wood are important sources of biomass for energy production in Nordic countries and generate formidable amounts of un-used ash yearly. Two FBCFAs from the co-combustion of peat and wood, fly ash from coal combustion, and limestone filler were used to replace 10 wt%, 20 wt%, and 40 wt% of cement in mortar specimens. The compressive strength, porosity, water absorption, water vapor permeability, and drying shrinkage of the mortars were measured and compared. It was found that in almost all properties FBCFAs outperformed un-reactive limestone filler. Compared to coal fly ash, FBCFAs produced mortars with comparable compressive strength although with higher porosity, water absorption, and water vapor permeability. |
| Databáze: | OpenAIRE |
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