Science – Future of Lithuania / Mokslas – Lietuvos Ateitis, Vol 7, No 5 (2015)

Biofuel Combustion Fly Ash Influence on the Properties of Concrete

Aurelijus Daugėla (Vilnius Gediminas Technical University, Lithuania)
Džigita Nagrockienė (Vilnius Gediminas Technical University, Lithuania)
Laurynas Zarauskas (Vilnius Gediminas Technical University, Lithuania)


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: Portland cement CEM I 42.5 R, sand of 0/4 fraction, gravel of 4/16 fraction, biofuel fly ash, superplasticizer, 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 was found that concrete where 20% of cement is replaced by biofuel ash has higher frost resistance.

Article in: Lithuanian

Article published: 2016-02-02

Keyword(s): concrete; biofuel fly ash; compressive strength; density; frost resistance.

DOI: 10.3846/mla.2015.845

Full Text: PDF pdf

Science – Future of Lithuania / Mokslas – Lietuvos Ateitis ISSN 2029-2341, eISSN 2029-2252
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 License.