Abstract
The article presents the results of research that focused on the selected physical properties of sulphur waste stabilized in concrete. The influence of replacing part of the cement on the physical properties of concrete was studied in the article. The concrete mixtures was modified by pure waste sulphur in amounts of 10, 20 and 30wt% of the cement. The results show that using sulphur admixture can reduce concrete absorptivity and make concrete more watertight.
Highlights
The growing demand of the construction industry for specialized technical concretes contributes to the increasing emissions of carbon dioxide to the atmosphere
The higher bulk density indicates on higher watertightness and lower values of absorptivity and total porosity
It was found that replacing part of the cement with waste sulfur in technical concrete changes soma of its physical properties
Summary
The growing demand of the construction industry for specialized technical concretes contributes to the increasing emissions of carbon dioxide to the atmosphere. Because of the increasing requirements for chemical resistance of concrete, many years of work on the addition of polymers improving their resistance to corrosion and mechanical strength have been underway. Waste sulfur is one example of a substance that polymerizes and improves the properties of technical concretes. The melting point of the sulfur is about 110 °C, flowing 150-400 °C and boiling above 400 °C. Thanks to these properties, it is easy to carry out the polymerization of waste by changing its alotropic variation and molecular weight [4,5,6,7]. The use of sulfur polymers in technical concrete improves its mechanical properties, such as strength about 45-50 MPa by compression. Known are bacterial deterioration properties of bacteria and sunlight of sulfur concretes [47
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