Figure 3
A bar graph compares the number of publications related to RDF in cement manufacturing across different years from 1992 to 2025. The horizontal axis represents the year of publication, ranging from 1992 to 2025. The vertical axis represents the number of publications, ranging from 0 to 30. The bars are vertical and represent the number of publications for each year. Key labels on the horizontal axis include years from 1992 to 2025, and on the vertical axis, the number of publications is labeled from 0 to 30. Notable trends include a significant increase in publications after 2013, with peaks in 2016 (19 publications), 2021 (23 publications), 2023 (24 publications), and a forecasted peak in 2025 (173 publications). There are dips in 2017 (9 publications), 2019 (13 publications), and 2022 (12 publications). The color scheme is black for the bars.The trend of articles published during 1991–2025. Source: Authors' own work