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Improving rubber concrete strength and toughness by plasma‐induced end‐of‐life tire rubber surface modification
This study evaluates the effectiveness of using different plasma treatments to favor the compatibility between rubber and a cement matrix in composites, thus leading to a different surface reactivity of the rubber component. Plasma‐treated rubbers were introduced into two different types of concrete...
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Published in: | Plasma processes and polymers 2021-09, Vol.18 (9), p.n/a |
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Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | This study evaluates the effectiveness of using different plasma treatments to favor the compatibility between rubber and a cement matrix in composites, thus leading to a different surface reactivity of the rubber component. Plasma‐treated rubbers were introduced into two different types of concrete. Mechanical tests highlighted that Portland concrete composites filled with N2/H2 plasma‐treated rubber had increased flexural strength, toughness, and compression strength compared to composites containing untreated rubber. A scaling law is also proposed to qualitatively discriminate between related effects due to topological/roughness or intrinsic/chemical adhesion modifications. Plasma treatment can improve both intrinsic adhesion and roughness of the rubber–cement interface and thus the overall concrete strength and toughness.
Plasma treatments modify the chemical structure and roughness of the rubber deriving from end‐of‐life tires. The treated rubber appears to be more compatible with the cement‐matrix thus leading to a general improvement of mechanical properties, thus paving the way for future technological applications of rubber concrete. |
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ISSN: | 1612-8850 1612-8869 |
DOI: | 10.1002/ppap.202100081 |