“…The maximum strength loss was 0.7 MPa out of 25.8 MPa which is not a major issue. During the visual inspection, the concrete color slightly changed from normal color to light color as shown in Figure as the research carried out by Anish Banerjee also indicates that concrete color deteriorates in acidic environment 39 . Figure 9 Durability of various specimens containing various RCA percentages.…”
The coronavirus (COVID-19) pandemic has not only had a severe impact on global health but also poses a threat to the environment. This research aims to explore an innovative approach to address the issue of increased waste generated by the pandemic. Specifically, the study investigates the utilization of discarded face masks in combination with recycled concrete aggregate (RCA) and Silica Fume (SFM) in civil construction projects. The disposable face masks were processed by removing the ear loops and nose strips, and then cutting them into small fibers measuring 20 mm in length, 5 mm in width, and 0.46 mm in thickness, resulting in an aspect ratio of 24. Various proportions of SFM and RCA were incorporated into the concrete mix, with a focus on evaluating the compressive strength, split tensile strength, and durability of the resulting material. The findings indicate that the addition of SFM led to improvements in both compressive and split tensile strength, while no significant impact on durability was observed.
“…The maximum strength loss was 0.7 MPa out of 25.8 MPa which is not a major issue. During the visual inspection, the concrete color slightly changed from normal color to light color as shown in Figure as the research carried out by Anish Banerjee also indicates that concrete color deteriorates in acidic environment 39 . Figure 9 Durability of various specimens containing various RCA percentages.…”
The coronavirus (COVID-19) pandemic has not only had a severe impact on global health but also poses a threat to the environment. This research aims to explore an innovative approach to address the issue of increased waste generated by the pandemic. Specifically, the study investigates the utilization of discarded face masks in combination with recycled concrete aggregate (RCA) and Silica Fume (SFM) in civil construction projects. The disposable face masks were processed by removing the ear loops and nose strips, and then cutting them into small fibers measuring 20 mm in length, 5 mm in width, and 0.46 mm in thickness, resulting in an aspect ratio of 24. Various proportions of SFM and RCA were incorporated into the concrete mix, with a focus on evaluating the compressive strength, split tensile strength, and durability of the resulting material. The findings indicate that the addition of SFM led to improvements in both compressive and split tensile strength, while no significant impact on durability was observed.
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