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In order to study the influence of various factors on the road performance of cement-stabilized cold recycled mixtures and to reveal their micro-mechanisms, this paper controlled key parameters such as the proportion of new aggregate replacement, molding method, compaction work and content of waste asphalt mixtures, and conducted an in-depth analysis of the unconfined compressive strength and splitting strength of cement-stabilized cold recycled mixtures. By scanning electron microscope technique, the authors carried out microscopic observation on the interfacial transition zone of cement-water-stabilized layer aggregates and explored the strength formation mechanism of cement-stabilized cold recycled mixtures. The results show that the strengthening effect of the new aggregate becomes evident with the increase of cement dosage. Higher dosage of the new aggregate can significantly enhance the strength of the specimen in the later stage. Vibration molding or the addition of compaction function enhance the densification and resistance properties of the mixtures. In addition, microscopic observation reveals that the cement-new aggregate interface primarily consists of dense reticulated calcium silicate with good bonding strength. On the other hand, the cement-old aggregate interface exhibits a loose structure, with the porous hydration products being the main factor inhibiting the performance of the mixture. © 2025, Harbin Institute of Technology. All rights reserved.
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Material Science and Technology
ISSN: 1005-0299
Year: 2025
Issue: 3
Volume: 33
Page: 29-37
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1
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