What is it about?
The paper presents the long-term compressive strength of polymer concrete containing common and alternative fine fillers, including quartz powder (ground sand) and by-products of the combustion of Polish fossil fuels (coal and lignite), tested nine or 9.5 years after preparation. The results were compiled with the data for respective specimens tested after 14 days, as well as 1.5 and 7 years. Data analysis confirmed the excellent durability of concrete-like composites with various fillers in terms of compressive strength. Density measurements of selected composites showed that the increase in strength was accompanied by an increase in volumetric density. This showed that the opinion that the development of the strength of composites with polymer matrices taking place within a few to several days was not always justified. In the case of a group of tested concrete-like composites with vinyl-ester matrices saturated with fly ashes of various origins, there was a further significant increase in strength over time.
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Why is it important?
Unique long-term testing of polymer concretes.
Perspectives
A discovery that the polymer concretes with fillers in the form fossil fuels combustion by-products (fly ashes with high content of calcium compounds and developed specific surface area) may obtain additional compressive strength during a longer period of time.
Doctor Joanna Julia Sokołowska
Politechnika Warszawska
Read the Original
This page is a summary of: Long-Term Compressive Strength of Polymer Concrete-like Composites with Various Fillers, Materials, March 2020, MDPI AG,
DOI: 10.3390/ma13051207.
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