Advances on concrete strength properties after adding polypropylene fibers from health personal protective equipment (PPE) of COVID-19: Implication on waste management and sustainable environment

Aal, Ahmed Abd El; Abdullah, Gamil M.S.; Qadri, S. M. Talha; Abotalib, Abotalib Z.; Othman, Abdullah

doi:10.1016/j.pce.2022.103260

Cited by 15 publications

(11 citation statements)

References 54 publications

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“…From Fig. 8 it can be concluded that split tensile strength increased effectively as compared to that of the normal sample having no SFM fibers, this increase in strength was attributed to the reinforcing, crack resistance, and bridging effect caused by SFM fibers 37 , 38 . This improvement of tensile strength is also due to more flexibility of SFM fibers as compared to RCA particles as these fibers are classified as short and discontinuous fibers which could provide good results in terms of strength and stiffness.…”

Section: Resultsmentioning

confidence: 90%

“…It is concluded from Fig. 6 and Table 6 that the compressive strength increases as the percentage of SFM increases from 0 to 1% and gives maximum strength by using 1% SFM which can be attributed to the crack-resistant properties or bridging effect of the fibers present in the Facemask 37 . Further increasing the SFM percentage causes a decrease in the strength due to the increasing pores.…”

Section: Resultsmentioning

confidence: 91%

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Utilization of discarded face masks in combination with recycled concrete aggregate and silica fume for sustainable civil construction projects

Amin,

Javed,

Ahmad

et al. 2024

Sci Rep

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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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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 91%

Utilization of discarded face masks in combination with recycled concrete aggregate and silica fume for sustainable civil construction projects

Amin,

Javed,

Ahmad

et al. 2024

Sci Rep

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“…For decontaminating PPE, microwave-generated steam would be ineffectual. Physical irradiation methods such as ethylene oxide, electron beams, and gamma radiation are useless for recycling HPPM 75 . …”

Section: Role Of Stripes In Pore Blocking and Strength Improvementsmentioning

confidence: 99%

“…Physical irradiation methods such as ethylene oxide, electron beams, and gamma radiation are useless for recycling HPPM 75 .…”

Section: Role Of Stripes In Pore Blocking and Strength Improvementsmentioning

confidence: 99%

Smart waste management perspective of COVID-19 healthy personal protective materials in concrete for decorative landscape pavements and artificial rocks

Aal

Alsaiari

Radwan

et al. 2023

Sci Rep

Self Cite

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This paper presents a new method for determining the effect of healthy personal protective material (HPPM) stripes, such as surgical masks, protective suits, and overhead and foot covers, on the durability and physicomechanical characteristics of concrete for use in architectural forms. Because of the current global epidemic caused by coronavirus (COVID-19), the use of HPPM, such as surgical masks, protective suits, and overhead and foot covers, has increased considerably. COVID-19’s second and third waves are currently affecting various countries, necessitating the use of facemasks (FM). Consequently, millions of single FM have been discharged into the wild, washing up on beaches, floating beneath the seas, and ending up in hazardous locations. The effect of stripe fibers on the physicomechanical characteristics of concrete, such as the workability, Uniaxial Compressive Strength UCS, flexural strength, impact strength, spalling resistance, abrasion resistance, sorptivity, Water absorption Sw, porosity (ηe), water penetration, permeability, and economic and eco-friendly aspects, need to be determined. With a focus on HPPM, especially single-use facemasks, this study investigated an innovative way to incorporate pandemic waste into concrete structures. Scanning electron microscope and X-ray diffraction patterns were employed to analyze the microstructures and interfacial transition zones and to identify the elemental composition. The HPPM had a pore-blocking effect, which reduced the permeability and capillary porosity. Additionally, the best concentrations of HPPM, particularly of masks, were applied by volume at 0, 1, 1.5, 2.0, and 2.5%. The use of mixed fibers from different HPPMs increased the strength and overall performance of concrete samples. The tendency of growing strength began to disappear at approximately 2%. The results of this investigation showed that the stripe content had no effect on the compressive strength. However, the stripe is critical for determining the flexural strength of concrete. The UCS increased steadily between 1 and 1.5% before falling marginally at 2.5%, which indicates that incorporating HPPM into concrete had a significant impact on the UCS of the mixture. The addition of HPPM to the mixtures considerably modified the failure mode of concrete from brittle to ductile. Water absorption in hardened concrete is reduced when HPPM stripes and fibers were added separately in low-volume fractions to the concrete mixture. The concrete containing 2% HPPM fibers had the lowest water absorption and porosity percentage. The HPPM fibers were found to act as bridges across cracks, enhancing the transfer capability of the matrices. From a technological and environmental standpoint, this study found that using HPPM fibers in the production of concrete is viable.

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“…It also helps in improving properties such as reduction in shrinkage cracks and helps in improving wear resistance, impermeability, and tensile strength of the resultant matrix [14]. The polypropylene fiber in disposable face masks contributes significantly to the tensile strength of the face masks [15].…”

Section: Introductionmentioning

confidence: 99%

Sustainable disposal of face masks in concrete: An investigation of mechanical properties and environmental impact

Sabhnani,

Ali,

Jan

et al. 2023

E3S Web of Conf.

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The COVID-19 pandemic has resulted in the excessive use of personal protective equipment used by people to safeguard them from contracting viruses. The use of plastic gloves and face masks has raised environmental concerns. The undue accumulation of this personal protective equipment has resulted in the degradation of land and water and contributed to the spread of the virus. Thus, this research paper is divided into two parts. The first phase entails completing thorough literature research to compile data on the mechanical, chemical, and physical properties of face masks. The second phase involves the potential reusing of face masks as an additive in concrete. This study’s findings can have a significant implication for the construction industry concerning environmental pollution management. This paper also highlights the effects of improper disposal of these face masks in terms of health and safety to the common public. Moreover, the study’s results can encourage further research on the potential application of face masks in other construction materials, leading to the development of more environmentally friendly building materials.

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Advances on concrete strength properties after adding polypropylene fibers from health personal protective equipment (PPE) of COVID-19: Implication on waste management and sustainable environment

Cited by 15 publications

References 54 publications

Utilization of discarded face masks in combination with recycled concrete aggregate and silica fume for sustainable civil construction projects

Utilization of discarded face masks in combination with recycled concrete aggregate and silica fume for sustainable civil construction projects

Smart waste management perspective of COVID-19 healthy personal protective materials in concrete for decorative landscape pavements and artificial rocks

Sustainable disposal of face masks in concrete: An investigation of mechanical properties and environmental impact

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