Method and system for performance regulation of recycled concrete based on aggregate gradation optimization

By pre-treating and grading the engineering waste soil, combined with precise batching of cementitious materials and curing processes, multi-objective optimization of the performance of recycled concrete was achieved, solving the shortcomings of existing technologies in the control of recycled concrete performance and improving the overall performance and resource utilization efficiency of recycled concrete.

CN122210784APending Publication Date: 2026-06-16GUANGZHOU PEARL RIVER DECORATION ENG CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU PEARL RIVER DECORATION ENG CO
Filing Date
2026-03-19
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Existing methods for designing recycled concrete mix proportions are insufficient to reveal the coupling effects among multiple parameters such as aggregate gradation, sand ratio, and cementitious materials, making it difficult for recycled concrete to achieve the synergistic performance goals of density, strength, and thermal conductivity.

Method used

The engineering waste soil is pretreated by the aggregate pretreatment unit to obtain coarse aggregate sand and fine aggregate sand. The aggregate gradation optimization unit is used for particle size classification. Combined with the dosage of cementitious materials and functional additives, dry and wet mixing and steam curing are carried out. Finally, performance evaluation and control are carried out to form a closed-loop feedback control.

Benefits of technology

It improves the accuracy, efficiency, and resource utilization of recycled concrete performance control, ensures the controllability and stability of recycled concrete, and achieves synergistic optimization of density, strength, and thermal conductivity.

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Abstract

The application relates to the technical field of performance regulation of recycled concrete, and relates to a recycled concrete performance regulation method and system based on aggregate gradation optimization, which comprises the following steps: confirming a recycled concrete performance regulation environment based on a recycled concrete performance regulation instruction, pretreating engineering slag soil by using an aggregate pretreatment unit, grading the coarse aggregate sand and the fine aggregate sand based on an aggregate gradation optimization unit, pouring recycled lightweight aggregate concrete mixture by using a curing control unit, detecting the compressive strength, apparent density and thermal conductivity of the recycled concrete test piece by using a performance evaluation and regulation unit, and comparing and analyzing the actually measured performance index set with the preset target performance index set, so that the recycled concrete performance regulation of the engineering slag soil is realized based on the regulated recycled concrete. The application can improve the accuracy, efficiency, resource utilization rate and engineering applicability of the recycled concrete performance regulation.
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