Method for preparing asphalt concrete by using surface modified ceramsite

By surface modification of the ceramate and mixing it with SBS modified asphalt and other additives, the problem of decreasing bond strength between the ceramate and asphalt is solved, the performance of asphalt concrete is significantly improved, and the road performance specifications are met.

CN119638271APending Publication Date: 2025-03-18HUAINAN DONGCHEN SOLID WASTE UTILIZATION CO LTD +1
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Patent Information

Application Number
CN202411807514.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The bonding strength between ceramic granules and asphalt decreases, resulting in the peeling of ceramic granules/asphalt layer, affecting traffic safety, and easily adhere to dust pollutants during construction, resulting in interface deterioration.

Method used

By preheating the ceramate, mixing it with oleic acid and coupling agent, the surface modified ceramate is preheated with SBS modified asphalt and other additives, and mixing it evenly to prepare modified ceramate asphalt concrete.

Benefits of technology

It significantly improves the interface combination performance between ceramic granules and asphalt, improves the compressive and aging resistance of asphalt concrete, improves the adhesion level, dynamic stability and residual stability, and meets the requirements of road performance specifications.

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Abstract

The invention discloses a method for preparing asphalt concrete by using surface modified ceramsite, and belongs to the field of composite materials. The ceramsite is modified by the oleic acid / coupling agent, and then the ceramsite is used for preparing the asphalt concrete. According to the method disclosed by the invention, tight combination of the ceramsite and the asphalt concrete is realized, so that the adhesion and the water damage property of the asphalt mixture are improved. The ceramsite modification process of the method is simple and controllable, industrial production can be performed after simple modification, and the obtained asphalt concrete treated by the oleic acid / coupling agent has the advantages of light weight, good mechanical properties, aging resistance, heat preservation, heat resistance and noise reduction, and has wide application potential in the fields of bridges, high-quality roads, environmental protection and the like. The method is low in process requirement, simple, easy to implement and suitable for large-scale engineering application.
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