Influence of Biofuel Combustion Fly Ash on the Properties of Concrete
2015
Džigita Nagrockienė, Aurelijus Daugėla, Laurynas Zarauskas, Gintautas Skripkiūnas

Cement as the binding agent in the production of concrete can be replaced with active mineral admixtures. Biofuel combustion fly ash is one of such admixtures. Materials used for the study include Portland cement CEM I 42.5 R, sand of 0/4 fraction, gravel of 4/16 fraction, biofuel fly ash, superplasticizer, and water. Six compositions of concrete were designed by replacing 0 %, 5 %, 10 %, 15 % 20 %, and 25 % of cement with biofuel fly ash. The article analyses the effect of biofuel fly ash content on the properties of concrete. The tests revealed that the increase of biofuel fly ash content up to 20 % increases concrete density and compressive strength after 7 and 28 days of curing and decreases water absorption, with corrected water content by using plasticizing admixture. It has been found that concrete where 20 % of cement is replaced by biofuel ash has higher frost resistance.


Atslēgas vārdi
Biofuel fly ash, compressive strength, concrete, frost resistance, density, water absorption

Nagrockienė, D., Daugėla, A., Zarauskas, L., Skripkiūnas, G. Influence of Biofuel Combustion Fly Ash on the Properties of Concrete. Construction Science. Nr.17, 2015, 18.-23.lpp. ISSN 1407-7329. e-ISSN 2255-8551.

Publikācijas valoda
English (en)
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