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Asphalt Modified with Nonmetals Separated from Pulverized Waste Printed Circuit Boards
Abstract
Nonmetals separated from pulverized waste printed circuit boards (PCBs) were reused as a new modifier to improve the performance of asphalt. The classical and rheological properties of unmodified asphalt and non-metal-modified asphalt (NMA) were determined. Specifically, the influence of nonmetals content and particle size on these properties has been studied. When the nonmetals content was 25 wt% and the particle size group was 0.07-0.09 mm, the NMA had a viscosity of 1225 cP at 135 degrees C, a penetration of 53.7 dmm at 15 degrees C, a ring and ball softening point of 54 degrees C, a ductility of 43.5 cm at 15 degrees C, a G*/sin delta of 3995.27 Pa at 60 degrees C, and an upper limit temperature (G*/sin delta = 1 kPa) of 69.4 degrees C, all of which showed that the high temperature performance of asphalt was improved significantly. Therefore, this study gives a fundamental understanding of NMA and represents a novel attempt to deal with the fast increasing quantities of nonmetals from waste PCBs, which is significant from an environmental and economic standpoint.
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“one of the greater challenges affecting the efficacy of nanomaterial legislation is identification of the presence of nanomaterials in products to determine whether the nanomaterial definition as recommended by the EU is applicable, and, as such, is specific legislation applicable [95].”
From Nanoparticles in Construction Materials and Other Applications, and Implications of Nanoparticle Use (2019) · cites this paper as [95]
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Metadata
- Authors
- Guo, J., Guo, J., Wang, S., & Xu, Z.
- Affiliations
- Shanghai Jiao Tong University (CN)
- Corresponding author
- Xu, Zhenming
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-12-12
- Volume
- 43
- Issue
- 2
- Pages
- 503-508
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W1964948775
- Cited by
- 69
- References
- 18
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 4 · 2023: 5 · 2022: 9 · 2021: 4 · 2020: 4 · 2019: 4 · 2018: 4 · 2017: 4 · 2016: 5 · 2015: 2 · 2014: 7 · 2013: 3 · 2012: 3
- FWCI
- 9.81
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Environmental Science & Technology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Civil and Structural Engineering › Asphalt Pavement Performance Evaluation
- Physical Sciences › Environmental Science › Waste Management and Disposal › Recycling and Waste Management Techniques
- Physical Sciences › Engineering › Building and Construction › Materials Engineering and Processing
- Keywords
- asphalt modification, waste printed circuit boards, rheological properties, high-temperature performance, particle size effects, viscosity, penetration, softening point, ductility, complex modulus, waste recycling
- MeSH terms
- Electronics, Hydrocarbons, Metals, Particle Size, Rheology, Temperature, Viscosity, Waste Products
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