Reuse of Waste Material “Waste Sludge Water” from a Concrete Plant in Cement Composites: A Case Study
Source abstract
Abstract
This paper presents the results of research dealing with the use of recycled waste sludge water from a concrete plant (CP) as partial or complete replacement of mixing water in cement mixtures. The need to recycle waste sludge water generated as a by-product (waste sludge water) during the production of fresh concrete in the concrete plant results from the environmental and economic problems associated with the operation of the concrete plant. Mixing water was replaced with recycled waste sludge water in the amount of 25%, 50%, 75%, and 100%. In order to determine the effect of partial or complete replacement of mixing water with waste sludge water from the concrete plant in the production of cement composites, laboratory tests of waste sludge water were carried out to determine whether the waste sludge water complies with the requirements for mixing water defined in CSN EN 1008. The tests also determined the properties of fresh cement mortar and hardened cement composites. These were tests of the beginning and end of cement mortar setting, and the strength characteristics (flexural strength, compressive strength). The results of these tests show that it is possible to replace the mixing water by waste sludge water from the concrete plant in the amount of up to 25% without significantly affecting the tested properties, in comparison with the formula containing pure mixing water.
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Research context
OpenAlex topics: Magnesium Oxide Properties and Applications · Concrete and Cement Materials Research · Recycled Aggregate Concrete Performance
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Environmental Engineering, Faculty of Mining and Geology, VŠB-TU Ostrava, 708 00 Ostrava, Czech Republic
Institute of Clean Technologies for Mining and Utilization of Raw Materials for Energy Use, VŠB-TU Ostrava, 708 00 Ostrava, Czech Republic
Department of Mining Engineering and Safety, Faculty of Mining and Geology, VŠB-TU Ostrava, 708 00 Ostrava, Czech Republic
Funding
Ministerstvo Školství, Mládeže a Tělovýchovy · Moravian-Silesian Region · VSB – Technical University of Ostrava
References (25)
Show source-provided references
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