<abstract xmlns="http://www.w3.org/1999/xhtml">This article presents the results of a research dealing with the effect of CO2 on cement composites prepared on the basis of waste sludge water from the concrete plant. The designed formulas R1 and R3 use waste sludge water from the concrete plant as a partial or complete replacement of mixing water in the production of cement composites. The mixing water was replaced by waste sludge water in the amounts of 25%, 50%, 75% and 100%. Laboratory tests that are defined in ČSN EN 1008 standard were performed in order to determine the effect of partial or complete replacement of mixing water. The test specimens were further subjected to the effect of CO2 in the Lamart laboratory chamber, where the effect of CO2 was simulated for the period 50 years. Subsequently, the cement composites were tested for their strength characteristics (tensile flexural strength, compressive strength) and subjected to a mineralogical analysis. The results show that the effect of CO2 will reduce the strength characteristics of the composite compared to the comparative samples.</abstract>

This article presents the results of a research dealing with the effect of CO2 on cement composites prepared on the basis of waste sludge water from the concrete plant. The designed formulas R1 and R3 use waste sludge water from the concrete plant as a partial or complete replacement of mixing water in the production of cement composites. The mixing water was replaced by waste sludge water in the amounts of 25%, 50%, 75% and 100%. Laboratory tests that are defined in ČSN EN 1008 standard were performed in order to determine the effect of partial or complete replacement of mixing water. The test specimens were further subjected to the effect of CO2 in the Lamart laboratory chamber, where the effect of CO2 was simulated for the period 50 years. Subsequently, the cement composites were tested for their strength characteristics (tensile flexural strength, compressive strength) and subjected to a mineralogical analysis. The results show that the effect of CO2 will reduce the strength characteristics of the composite compared to the comparative samples.

The effect of CO2 on cement composites produced with an admixture of waste sludge water from a concrete plant

Institute of Clean Technologies for Extraction and Utilization of Energy Resources

Department of Mining Engineering and Safety

Selected Scientific Papers - Journal of Civil Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The effect of CO on cement composites produced with an admixture of waste sludge water from a concrete plant

This article presents the results of a research dealing with the effect of CO2 on cement composites prepared on the basis of waste sludge water from the...

The effect of CO₂ on cement composites produced with an admixture of waste sludge water from a concrete plant

Published Online: Dec 31, 2019

Page range: 39 - 46

DOI: https://doi.org/10.1515/sspjce-2019-0004

Keywords
accelerated carbonation of composite, replacement of mixing water, waste water from concrete plant, cement composites, tensile flexural strength, compressive strength

© 2019 Lukas Klus et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The effect of CO2 on cement composites produced with an admixture of waste sludge water from a concrete plant

Published Online: Dec 31, 2019

Page range: 39 - 46

DOI: https://doi.org/10.1515/sspjce-2019-0004

Keywordsaccelerated carbonation of composite, replacement of mixing water, waste water from concrete plant, cement composites, tensile flexural strength, compressive strength

© 2019 Lukas Klus et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

The effect of CO₂ on cement composites produced with an admixture of waste sludge water from a concrete plant

Keywords
accelerated carbonation of composite, replacement of mixing water, waste water from concrete plant, cement composites, tensile flexural strength, compressive strength