Waste plastic regenerated shotcrete and preparation method thereof

By optimizing the structure and dosage of shotcrete using plastic granules, combined with water-reducing agents and thickeners, the problems of natural mineral resource mining and waste plastic application are solved, achieving both strength improvement and environmental benefits.

CN119750993BActive Publication Date: 2025-11-25CHINA MCC17 GRP CO LTD +1
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Patent Information

Application Number
CN202411960606.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-11-25
Estimated Expiration
2044-12-30

AI Technical Summary

Technical Problem

The over-exploitation of natural mineral resources and the low strength and poor adhesion of waste plastics in the current sprayed concrete preparation process limit its application in concrete.

Method used

Plastic granules, which are hollow structures with interconnected pores formed by plastic strips, are used to optimize their application in shotcrete. By adjusting the amount and particle size distribution of plastic granules, and combining the use of water-reducing agents and thickeners, the adhesion between plastic granules and cement and the fluidity of concrete are improved.

Benefits of technology

It improves the structural strength and bonding strength of concrete, solves the defects of natural aggregate gradation, reduces transportation costs, and realizes resource recycling and environmental protection.

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Abstract

The application discloses a kind of waste plastics regeneration shotcrete and preparation method thereof, belong to waste plastic processing technical field.The raw material of waste plastics regeneration shotcrete of the application includes cement, coarse aggregate and fine aggregate, wherein, the fine aggregate part uses plastic granule, the plastic granule is hollow structure with intercommunicating aperture formed by plastic strip, and the aperture communicates the outside with its inside of granule.The structure of plastic granule is optimized in the application, intercommunicating aperture is formed in it, so as to facilitate cement paste to fill therein, so that the structural strength of concrete can be effectively improved, and the adhesion between plastic granule and cement paste is improved, the problem that the application of concrete is limited due to the lower strength of plastic and the poor adhesion between plastic and cement paste in the prior art is solved.
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