Influence of type of biomass burned on the properties
of cement mortar containing fly ash
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Czestochowa University of Technology, Faculty of Civil Engineering |
Publication date: 2020-10-01
BoZPE 2020;(1):77–82
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ABSTRACT
The paper presents the issues related to the excessive use of natural resources and the possibility
of its reduction through the use of ash deposited in landfills. Two different ashes from
the combustion of various types of biomass (coconut shell and sunflower) were used and
compared with each other. As part of the tests, the chemical composition of the ashes used
was checked and samples of cement and standard mortars were made using the two types of
fly ash. The research shows that the chemical composition is similar to the volatile chemical
composition of conventional burning pavilions. It should be noted that the type and origin
of the ash used for the results obtained is important. The use of ashes as a partial substitute
for standard sand increased the compressive strength of all tested samples from 1 to over
17%. Ash additions reduced the compressive strength drop after frost resistance testing by
3 to 15%, and slightly increased the absorbency by 2 to 6% relative to control samples.
An important advantage is that the use of ash as a substitute for standard sand allows you
to reduce the consumption of natural resources.