A design method for roughening treatment of concrete slabs

By precisely controlling the roughening treatment of concrete slabs through design parameters and calculation methods, the problem of difficult quality control in roughening treatment in existing technologies is solved, ensuring interlayer shear strength, reducing defects, and making it suitable for highway and urban road pavements.

CN119207671BActive Publication Date: 2025-10-31MCC SOUTHERN CITY CONSTR ENG TECH CO LTD +1
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Patent Information

Application Number
CN202411331821.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-09-24
Publication Date
2025-10-31
Estimated Expiration
2044-09-24

AI Technical Summary

Technical Problem

Existing technologies make it difficult to precisely control the quality of roughening treatment of concrete layers in rigid-flexible composite pavements, resulting in insufficient interlayer shear strength and making them prone to defects such as interlayer shear displacement, shoving, shoving and slippage.

Method used

By designing parameters and calculation methods, including determining the roughening treatment method, calculating the area roughening coefficient and the amount of waterproof adhesive layer, the interlayer shear strength is ensured to meet the design requirements. Treatment methods such as roughening, shot blasting and milling are adopted, and the design value of interlayer shear strength is calculated by formula.

Benefits of technology

It enables precise control of the concrete slab roughening treatment quality before construction, ensures interlayer shear strength, reduces the occurrence of defects, and is suitable for highway and urban road pavements.

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Abstract

This application provides a design method for roughening treatment of concrete slabs, which includes: determining the roughening treatment method for the concrete slab layer; determining the design parameters for different roughening treatment methods; and calculating the area roughening coefficient μ of the concrete slab. S ; Determine the type and amount of waterproof adhesive layer Q n ; Calculate the design value τ of inter-story shear strength s The process involves determining whether the design value of the interlayer shear strength is greater than or equal to the minimum interlayer shear strength. If the design value is greater than or equal to the minimum interlayer shear strength, the roughening design of the concrete slab is completed. If the design value is less than the minimum interlayer shear strength, the above steps are repeated until the requirement that the design value is greater than or equal to the minimum interlayer shear strength is met. This method allows for precise control of the roughening treatment quality of concrete slabs in rigid-flexible composite long-life pavements before construction, thereby ensuring that the interlayer shear strength meets design requirements and avoiding defects such as interlayer shear displacement, asphalt layer shoving, and shoving.
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