A modified recycled coarse aggregate with improved mechanical properties, its modification method, and its application.
CN122301488APending Publication Date: 2026-06-30CHANGZHOU UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHANGZHOU UNIV
- Filing Date
- 2026-04-29
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
The application of existing recycled coarse aggregates in the construction field is limited, mainly due to their low strength, high water absorption and high porosity, which make it difficult to meet the requirements for building materials.
Method used
A dense protective layer is coated on the surface of recycled coarse aggregate and its internal pores are filled. A dense film is formed by the combination of epoxy resin and curing agent, which improves the mechanical properties of the aggregate.
Benefits of technology
It significantly improves the mechanical properties of recycled coarse aggregate, reduces water absorption and crushing value, and improves its durability, meeting the resource reuse requirements of green building.
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Smart Images
Figure CN122301488A_ABST
Abstract
This invention relates to the field of building materials technology, and in particular to a modification method for improving the mechanical properties of recycled coarse aggregate. This modification method involves coating the recycled aggregate with a solution prepared from water-based epoxy resin, a curing agent, and water, forming a protective film that improves the mechanical properties of the recycled coarse aggregate. Simultaneously, it fills the aggregate pores, improving the durability of the recycled coarse aggregate. Compared to the properties before modification, the water absorption and crushing value of the coated recycled coarse aggregate are significantly improved, and some of its physical properties meet the performance requirements of Class I recycled coarse aggregate. The feasibility of this method is verified through microscopic analysis.
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