WO2023014236A1 - Hot asphalt mixture recipe containing used surgical masks - Google Patents
Hot asphalt mixture recipe containing used surgical masks Download PDFInfo
- Publication number
- WO2023014236A1 WO2023014236A1 PCT/RO2022/000001 RO2022000001W WO2023014236A1 WO 2023014236 A1 WO2023014236 A1 WO 2023014236A1 RO 2022000001 W RO2022000001 W RO 2022000001W WO 2023014236 A1 WO2023014236 A1 WO 2023014236A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- asphalt mixture
- surgical masks
- masks
- hot asphalt
- used surgical
- Prior art date
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 40
- 239000000203 mixture Substances 0.000 title claims abstract description 31
- 239000000945 filler Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 6
- 235000019738 Limestone Nutrition 0.000 claims abstract description 5
- 239000006028 limestone Substances 0.000 claims abstract description 5
- 239000004576 sand Substances 0.000 claims abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 9
- 208000025721 COVID-19 Diseases 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000001033 granulometry Methods 0.000 abstract description 2
- 239000011093 chipboard Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 230000008520 organization Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 101100369915 Drosophila melanogaster stas gene Proteins 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000011384 asphalt concrete Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000007727 cost benefit analysis Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Definitions
- the invention relates to the recycling of surgical masks by introducing / incorporating them in the recipe of hot asphalt mixture in order to eliminate the risks of pollution caused by used surgical masks stored uncontrolled worldwide following the COVID-19 pandemic.
- the masks are composed of synthetic fabric based on polypropylene and / or polyethylene, polyurethane, polystyrene, polycarbonate, polyacrylonitrile (Akber, 2020).
- the mass of a surgical mask varies between 3-4 grams, which means that for 1 kg of masks there are 250-330 pieces.
- the hot asphalt mixture is a construction material made from mixtures obtained on the basis of established recipes from natural aggregates or substitutes, filler and bitumen (Standard AND 605-2016: STAS SR EN 13108).
- the base layer of asphalt mixtures is a layer that is part of the road structures and over which the bituminous coatings are applied.
- the studied asphalt mixture is called bituminous asphalt paving with base layer AB is the maximum grain size (STAS SR EN 13108-1).
- the standard recipe for the AB 31 .5 type base layer asphalt mixture consists of 40.8% natural aggregate sieve with a size of more than 4.0 mm, 50% crushed sand with a particle size between 0.0 and 4.0 mm, 5% limestone filler and 4.2% road bitumen type 50/70 (STAS 13108-1, Normative AND 605-2016).
- Road bitumen used in the composition of hot asphalt mixtures is considered the most expensive material in road construction due to the fact that it is of oil origin, being closely related to the growing market demand, thus aiming to improve the recipe of low cost asphalt mixtures (Buruiana, 2013).
- the technical problem solved by the invention is the elimination of environmental pollution (oceans, seas, soil) caused by worn surgical masks by adding them to the base layer of the hot asphalt mixture type AB 31.5, and the elements in the composition of surgical masks (polymers) helps to improve the mechanical properties of the asphalt mixture.
- the new elements consist in solving the environmental problem by recycling the used surgical masks by introducing them in the recipe of the hot asphalt mixtures of the base layer type AB 31.5.
- Asphalt mixture recipe 40.8% natural aggregate sieve with a size over 4.0 mm, 50% crushing sand with a particle size between 0.0 and 4.0 mm, 5% sorted limestone filler with a particle size of 0.063 and 0.100 mm, 3.9% road bitumen type 50/70 and 0.3% surgical masks.
- the quantities have been added: 816 kg of natural aggregate sieve with a size over 4.0 mm, 1000 kg of crushing sand with a granulometry between 0.0 and 4, 0 mm, 100 kg limestone filler, 78 kg 50/70 type road bitumen and 6 kg surgical masks.
- recipe II is considered optimal, because it performed best in the experimental study in the Laboratory of Analysis and Testing in Construction - Grade II, managing to successfully introduce a percentage of surgical masks of 0.3% in asphalt asphalt mixture bituminous with chipping type AB 31 ,5.
- STAS SR EN 13108-1 2006, Asphalt mixtures. Material specifications. Part 1 : Asphalt concrete. AND 546-2013, Norm regarding the hot execution of bituminous coatings for the bridge track.
- STAS SR EN 1744-1 2009, tests for determining the chemical properties of aggregates. Part 1 : Chemical analysis.
Abstract
The invention relates to the technological innovation of introducing used surgical masks in the recipe of the hot asphalt mixture base layer type AB 31.5 bringing enormous environmental benefits by reducing the disasters caused by the COVID-19 pandemic. The hot asphalt mixture of the base layer type AB 31.5, according to the invention, consists, in mass percentages, of 40.8% natural aggregate chipboard with a size of more than 4.0 mm, 50% of crushing sand with a granulometry between 0,0 and 4.0 mm, 5% sorted limestone filler with a particle size of 0.063 and 0.100 mm, 3.9% road bitumen type 50/70 and 0.3% used surgical masks.
Description
HOT ASPHALT MIXTURE RECIPE CONTAINING USED SURGICAL MASKS
DESCRIPTION OF THE INVENTION
The invention relates to the recycling of surgical masks by introducing / incorporating them in the recipe of hot asphalt mixture in order to eliminate the risks of pollution caused by used surgical masks stored uncontrolled worldwide following the COVID-19 pandemic.
Globally, the current environmental problem is the enormous amount of surgical masks used during the COVID-19 pandemic period through the measures imposed by the World Health Organization on the mandatory use of masks in public space.
According to the World Trade Organization (WTO), China has exported more than 220 billion medical and non-medical masks by 2020. Recent studies have estimated that 130 billion used masks are dumped every month, some are stored uncontrollably causing major environmental problems and the other part is being incinerated as a measure of immediate elimination of environmental and population toxicity risks (WTO Annual Report), 2021). The World Environment Organization warns that throwing masks into the marine environment as a result of the pandemic is a huge environmental problem, the lifespan of surgical mask waste is 450 years coupled with the conditions of the climate crisis affecting the planet, an estimated 1.56 billion surgical masks will reach the oceans (Bondaroff, 2020). The masks are composed of synthetic fabric based on polypropylene and / or polyethylene, polyurethane, polystyrene, polycarbonate, polyacrylonitrile (Akber, 2020). The mass of a surgical mask varies between 3-4 grams, which means that for 1 kg of masks there are 250-330 pieces.
The hot asphalt mixture is a construction material made from mixtures obtained on the basis of established recipes from natural aggregates or substitutes, filler and bitumen (Standard AND 605-2016: STAS SR EN 13108).
The base layer of asphalt mixtures is a layer that is part of the road structures and over which the bituminous coatings are applied.
The studied asphalt mixture is called bituminous asphalt paving with base layer AB
is the maximum grain size (STAS SR EN 13108-1).
The standard recipe for the AB 31 .5 type base layer asphalt mixture consists of 40.8% natural aggregate sieve with a size of more than 4.0 mm, 50% crushed sand with a particle size between 0.0 and 4.0 mm, 5% limestone filler and 4.2% road bitumen type 50/70 (STAS 13108-1, Normative AND 605-2016).
Road bitumen used in the composition of hot asphalt mixtures is considered the most expensive
material in road construction due to the fact that it is of oil origin, being closely related to the growing market demand, thus aiming to improve the recipe of low cost asphalt mixtures (Buruiana, 2013).
Disposal of masking waste in conjunction with reducing carbon dioxide emissions is a priority for each country through government policy strategies, involving road builders in environmental actions (COM (2018) 773).
At the international level, only one study is known for the introduction of shredded surgical masks into the mixture used for the base layer of pavement constructions (Saberian, 2021).
Within the Laboratory of Analysis and Testing in Construction - Grade II from S C. Antrepriza de Constructii Drumuri §i Autostraz SRL, in accordance with the collaboration protocol with research topic "Research on the possibilities of waste recovery in road construction", carried out experimental tests on the possibilities of capitalization of used surgical masks in the hot asphalt mixture of type AB 31, 5 base layer with bitumen 50/70. Used surgical masks (worn-out surgical masks cannot be performed in the laboratory due to public safety measures for the safety of SARS-VOC-2 contamination measures), when introduced into the pouring mixture (160 °C) there is no danger of soil contamination I population And due to the fact that the sterilization process takes place at a temperature of 130 °C, the masks become inert.
We propose to improve the recipe of the asphalt mixture type AB 31 , 5-layer base by adding surgical masks, in order to recycle used surgical masks stored uncontrolled to protect the environment.
The technical problem solved by the invention is the elimination of environmental pollution (oceans, seas, soil) caused by worn surgical masks by adding them to the base layer of the hot asphalt mixture type AB 31.5, and the elements in the composition of surgical masks (polymers) helps to improve the mechanical properties of the asphalt mixture.
The new elements consist in solving the environmental problem by recycling the used surgical masks by introducing them in the recipe of the hot asphalt mixtures of the base layer type AB 31.5.
Asphalt mixture recipe: 40.8% natural aggregate sieve with a size over 4.0 mm, 50% crushing sand with a particle size between 0.0 and 4.0 mm, 5% sorted limestone filler with a particle size of 0.063 and 0.100 mm, 3.9% road bitumen type 50/70 and 0.3% surgical masks. In the Laboratory of Analysis and Testing in Construction - Grade II from S.C. the Enterprise of Roads and Highways Constructions SRL has experienced a load of 2000 kg, the quantities have been added: 816 kg of natural aggregate sieve with a size over 4.0 mm, 1000 kg of crushing sand with a granulometry between 0.0 and 4, 0 mm, 100 kg limestone filler, 78 kg 50/70 type road bitumen
and 6 kg surgical masks.
The recipe proposed according to the Recipe Study no. 1/ AB 31.5 of 02.08.2021 for the preparation of bituminous asphalt with sieve according to SR 174-1 1 2009 was subjected to the Marshall test and the results from table no. 1.
Table no. 1 Physical and mechanical characteristics obtained on bituminous asphalt pavement type: AB 31 , 5 base layer (Laboratory of analysis and construction tests - Grade II)
According to the results obtained, recipe II is considered optimal, because it performed best in the experimental study in the Laboratory of Analysis and Testing in Construction - Grade II, managing to successfully introduce a percentage of surgical masks of 0.3% in asphalt asphalt mixture bituminous with chipping type AB 31 ,5.
By applying the innovative recipe, the advantages are obtained:
1. Reducing environmental pollution by removing worn-out surgical masks following the impact of the COVID-19 pandemic.
2. The environmental cost-benefit analysis shows that the disposal of used mask waste has insignificant costs compared to the environmental benefits, and also reduces the costs of producing hot asphalt mixtures by adding a smaller amount of bitumen (from 4,2% decreases to 3.9%)
3. Worn surgical masks introduced in the technological process of obtaining hot asphalt mixture at 160 °C are considered as additives, improving the mechanical characteristics and workability of the asphalt mixture.
4. Reducing the viscosity of the asphalt binder (bitumen), saving energy we reduce the emission of carbon dioxide (CO2).
5. Increased physical properties as well as increased rheological properties of the binder due to polymer-based surgical masks used in the hot mixture.
6. Recovery of used surgical masks in order to reduce the negative effect on the environment and the health of the population.
References
World Trade Organization (WTO) Annual Report 2021- Spotlight COVID-19 and World Trade, pp. 76, ISBN 978-92-870-5131-8 (2021).
P. Bondaroff, Teale, and Cooke, Sam. (2020, December). "Masks on the Beach: The impact of COVID-19 on marine plastic pollution." OceansAsia.
A S. Akber, A.B. Khalil, M. Arslan, Extensive use of face masks during COVID-19 pandemic: (micro-) plastic pollution and potential health concerns in the Arabian Peninsula, Saudi J. Biol. Sci., Vol. 27, pp. 3181-3186 (2020).
AND 605 - 2016, Norm regarding the hot-run asphalt mixtures, technical conditions for the design, preparation and installation of asphalt mixtures.
STAS SR EN 13108-1 : 2006, Asphalt mixtures. Material specifications. Part 1 : Asphalt concrete. AND 546-2013, Norm regarding the hot execution of bituminous coatings for the bridge track.
D. L. Buruiana, M. Bordei, A. V. Sandu, A. I. Chirculescu, I. G. Sandu, Studies on Grit Use in Asphalt Mixtures (II), Revista Materials Plastice, vol 50, no. 2, pp.113-118 (2013).
COM (2018) 773 - Communication from the Commission to the European Parliament, the European Council, the Council, the Economic and Social Committee, the Committee of the Regions and the European Investment Bank, Brussels, 28.11.2018.
M. Saberian, J. Li, S. Kilmartin-Lynch, M. Boroujeni, Repurposing of COVID-19 single-use face masks for pavements base I subbase, Science of the Total Environment, vol 769, article number 145527 (2021).
STAS SR EN 1744-1 : 2009, tests for determining the chemical properties of aggregates. Part 1 : Chemical analysis.
Claims
Claims
The hot asphalt mixture recipe, characterized in that it consists of 40.8% natural aggregate sieve with a size over 4.0 mm, 50% crushed sand with a particle size between 0.0 and 4.0 mm, 5 % sorted limestone filler with a particle size of 0.063 and 0.100 mm, 3.9% road bitumen type 50/70 and 0.3% used surgical masks.
5
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ROA202100468 | 2021-08-06 | ||
| ROA202100468A RO135384A3 (en) | 2021-08-06 | 2021-08-06 | Recycling surgical masks in hot asphalt mixtures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023014236A1 true WO2023014236A1 (en) | 2023-02-09 |
Family
ID=79289425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RO2022/000001 WO2023014236A1 (en) | 2021-08-06 | 2022-02-09 | Hot asphalt mixture recipe containing used surgical masks |
Country Status (2)
| Country | Link |
|---|---|
| RO (1) | RO135384A3 (en) |
| WO (1) | WO2023014236A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716838A (en) * | 2022-04-26 | 2022-07-08 | 中冶南方城市建设工程技术有限公司 | Waste mask modified asphalt suitable for long-life pavement and preparation method thereof |
| CN114933812B (en) * | 2022-05-16 | 2023-04-14 | 哈尔滨工业大学 | High-performance composite modified asphalt based on modification of waste disposable medical mask and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2222790A1 (en) * | 2007-12-20 | 2010-09-01 | E. I. du Pont de Nemours and Company | Bituminous mixtures comprising thermoplastic polymer membranes |
-
2021
- 2021-08-06 RO ROA202100468A patent/RO135384A3/en unknown
-
2022
- 2022-02-09 WO PCT/RO2022/000001 patent/WO2023014236A1/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2222790A1 (en) * | 2007-12-20 | 2010-09-01 | E. I. du Pont de Nemours and Company | Bituminous mixtures comprising thermoplastic polymer membranes |
Non-Patent Citations (7)
| Title |
|---|
| "Spotlight COVID-19 and World Trade", WORLD TRADE ORGANIZATION (WTO) ANNUAL REPORT 2021, 2021, pages 76, ISBN: 978-92-870-5131-8 |
| A S. AKBER, A.B. KHALIL, M. ARSLAN: "Extensive use of face masks during COVID-19 pandemic:(micro-) plastic pollution and potential health concerns in the Arabian Peninsula, Saudi", SCI., vol. 27, 2020, pages 3181 - 3186, XP086378756, DOI: 10.1016/j.sjbs.2020.09.054 |
| AKBER ABBASI SADDAM ET AL: "Extensive use of face masks during COVID-19 pandemic: (micro-)plastic pollution and potential health concerns in the Arabian Peninsula", SAUDI JOURNAL OF BIOLOGICAL SCIENCES, ELSEVIER, AMSTERDAM, NL, vol. 27, no. 12, 8 October 2020 (2020-10-08), pages 3181 - 3186, XP086378756, ISSN: 1319-562X, [retrieved on 20201008], DOI: 10.1016/J.SJBS.2020.09.054 * |
| D. L. BURUIANAM. BORDEIA. V. SANDUA. I. CHIRCULESCUI. G. SANDU: "Studies on Grit Use in Asphalt Mixtures (II", REVISTA MATERIALE PLASTICE, vol. 50, no. 2, 2013, pages 113 - 118 |
| M. SABERIANJ. LIS. KILMARTIN-LYNCHM. BOROUJENI: "Repurposing of COVID-19 single-use face masks for pavements base / subbase", SCIENCE OF THE TOTAL ENVIRONMENT, vol. 769, 2021 |
| P. BONDAROFF, TEALECOOKE, SAM.: "Masks on the Beach: The impact of COVID-19 on marine plastic pollution", OCEANSASIA, December 2020 (2020-12-01) |
| WTO ANNUAL REPORT, 2021 |
Also Published As
| Publication number | Publication date |
|---|---|
| RO135384A0 (en) | 2021-12-30 |
| RO135384A3 (en) | 2023-02-28 |
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