Eco-efficient cement production: Investigating water treatment plant sludge and eggshell filler use in LC3 systems

Sustainable binary/ternary blended mortars with recycled water treatment sludge using fly ash or blast slag: Characterization and environmental-economical impacts

“…In the study by Ruviaro et al (2021), it was concluded that replacing up to 20% PC with calcined WTS caused almost equivalent compressive strength compared to the plain paste and did not significantly influence the fresh properties. Spat Ruviaro et al (2023) also found from another study that the incorporation of 30% WTS and 15% filler as a replacement of cement caused only 10% lower compressive strength than the plain cement paste. Besides, Hagemann et al (2019) found that the usage of 15% WTS increased the compressive strength, while for higher WTS content (15-28%), the compressive strength gain was less pronounced.…”

“…Despite several studies investigating the use of WTS in cement-based composites as mentioned above, more attention has been given to the mechanical and microstructural properties. In the literature, there have been only two researches (Ruviaro et al 2021;Spat Ruviaro et al 2023) which evaluated the rheological parameter. As a second novelty, in the current study, the rheological properties of binary and ternary blended mortars with MWTS were investigated to establish the feasibility of using these wastes in terms of fresh performance.…”

“…However, marginal changes were observed in the plastic viscosity up to 40% incorporation. Spat Ruviaro et al (2023) also used eggshell filler and WTS at the replacement of 10%, 15%, 20%, and 30% with cement. They found a progressive increase in the yield stress as the increase in WTS content.…”

“…The cost and embodied energy used for the production of MWTS were analyzed according to its recycling process, namely, drying, grinding, and calcination. These values were used in the study by Spat Ruviaro et al (2023). The cost and emission related to the transportation of the raw materials were not considered in the current study.…”

Investigação Das Propriedades De Pastas De Cimento Portland Produzidas Com Fíler De Cascas De Ovos

“…Os ensaios de reometria rotacional foram realizados em amostras com 25 ml a 23 ⁰C em um reômetro Haake MARS III (Thermo Fisher Scientific) usando uma geometria do tipo vane. A rotina para obtenção das curvas de fluxo e as equações para determinação da viscosidade equivalente e da tensão de escoamento dinâmico podem ser verificadas em Ruviaro et al (12) .…”