Assessment of Waste Glass Incorporation in Asphalt Concrete for Surface Layer Construction
The growing need to preserve natural resources and minimize landfill waste has led to an increased consideration of incorporating waste materials in road construction and maintenance. This study focuses specifically on utilizing waste glass as part of the aggregates in hot asphalt, particularly in A...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/14/4938 |
| _version_ | 1797588517170184192 |
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| author | Stavros Kalampokis Danai Kalama Fotini Kesikidou Maria Stefanidou Evangelos Manthos |
| author_facet | Stavros Kalampokis Danai Kalama Fotini Kesikidou Maria Stefanidou Evangelos Manthos |
| author_sort | Stavros Kalampokis |
| collection | DOAJ |
| description | The growing need to preserve natural resources and minimize landfill waste has led to an increased consideration of incorporating waste materials in road construction and maintenance. This study focuses specifically on utilizing waste glass as part of the aggregates in hot asphalt, particularly in Asphalt Concrete (AC) for surface layers, known as “Glassphalt”. Glass, due to its poor adhesion to bitumen, presents challenges when used in asphalt mixtures. Two types of waste glass, monolithic and tempered, were incorporated at two distinct contents, 10% and 15%, into the AC. Several properties such as stiffness, resistance to permanent deformation (evaluated through cyclic compression tests), indirect tensile strength, and the indirect tensile strength ratio (ITSR) were assessed for all Glassphalt mixtures, as well as the conventional mixture. Additionally, the Solar Reflectance Index (SRI) was measured to evaluate the reflectivity of the resulting Glassphalts. The findings indicate that the incorporation of both types of waste glass resulted in reduced stiffness and resistance to permanent deformation. Regarding water sensitivity (ITSR), the Glassphalts containing 15% waste glass, regardless of the glass type, exhibited ITSR values below the accepted threshold of 80%. The addition of waste glass did not yield significant changes in SRI measurements. |
| first_indexed | 2024-03-11T00:53:10Z |
| format | Article |
| id | doaj.art-c22fdc0b94ff4ee7ab86899efed3e3e6 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T00:53:10Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c22fdc0b94ff4ee7ab86899efed3e3e62023-11-18T20:15:23ZengMDPI AGMaterials1996-19442023-07-011614493810.3390/ma16144938Assessment of Waste Glass Incorporation in Asphalt Concrete for Surface Layer ConstructionStavros Kalampokis0Danai Kalama1Fotini Kesikidou2Maria Stefanidou3Evangelos Manthos4Highway Engineering Laboratory, School of Civil Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceHighway Engineering Laboratory, School of Civil Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceLaboratory of Building Materials, School of Civil Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceLaboratory of Building Materials, School of Civil Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceHighway Engineering Laboratory, School of Civil Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceThe growing need to preserve natural resources and minimize landfill waste has led to an increased consideration of incorporating waste materials in road construction and maintenance. This study focuses specifically on utilizing waste glass as part of the aggregates in hot asphalt, particularly in Asphalt Concrete (AC) for surface layers, known as “Glassphalt”. Glass, due to its poor adhesion to bitumen, presents challenges when used in asphalt mixtures. Two types of waste glass, monolithic and tempered, were incorporated at two distinct contents, 10% and 15%, into the AC. Several properties such as stiffness, resistance to permanent deformation (evaluated through cyclic compression tests), indirect tensile strength, and the indirect tensile strength ratio (ITSR) were assessed for all Glassphalt mixtures, as well as the conventional mixture. Additionally, the Solar Reflectance Index (SRI) was measured to evaluate the reflectivity of the resulting Glassphalts. The findings indicate that the incorporation of both types of waste glass resulted in reduced stiffness and resistance to permanent deformation. Regarding water sensitivity (ITSR), the Glassphalts containing 15% waste glass, regardless of the glass type, exhibited ITSR values below the accepted threshold of 80%. The addition of waste glass did not yield significant changes in SRI measurements.https://www.mdpi.com/1996-1944/16/14/4938Glassphaltwaste glassstiffnesscyclic compression testITSRsolar reflectance index |
| spellingShingle | Stavros Kalampokis Danai Kalama Fotini Kesikidou Maria Stefanidou Evangelos Manthos Assessment of Waste Glass Incorporation in Asphalt Concrete for Surface Layer Construction Materials Glassphalt waste glass stiffness cyclic compression test ITSR solar reflectance index |
| title | Assessment of Waste Glass Incorporation in Asphalt Concrete for Surface Layer Construction |
| title_full | Assessment of Waste Glass Incorporation in Asphalt Concrete for Surface Layer Construction |
| title_fullStr | Assessment of Waste Glass Incorporation in Asphalt Concrete for Surface Layer Construction |
| title_full_unstemmed | Assessment of Waste Glass Incorporation in Asphalt Concrete for Surface Layer Construction |
| title_short | Assessment of Waste Glass Incorporation in Asphalt Concrete for Surface Layer Construction |
| title_sort | assessment of waste glass incorporation in asphalt concrete for surface layer construction |
| topic | Glassphalt waste glass stiffness cyclic compression test ITSR solar reflectance index |
| url | https://www.mdpi.com/1996-1944/16/14/4938 |
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