Long-service-life self-sensing sandwich concrete rush-repair rush-building pavement and construction method thereof

CN119640645AActive Publication Date: 2025-03-18HARBIN INST OF TECH
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Patent Information

Application Number
CN202411881295.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-19
Publication Date
2025-03-18
Estimated Expiration
2044-12-19

AI Technical Summary

Technical Problem

The traditional single-layer concrete road surface lacks functional zoning, long construction time, difficult to achieve long-life design, and the detection method is destructive and cannot monitor the service status in real time.

Method used

It adopts a three-layer sandwich concrete structure, the lower layer is a long-life ultra-high-strength tensile layer, the middle surface layer is a self-perceived compression and shear layer, and the upper layer is a freezing, impact and wear resistance layer. By pre-filling smart aggregate and conductive mortar, a conductive network is built to achieve real-time structural monitoring.

Benefits of technology

It shortens construction time, improves the service life of the road surface in complex environments, and gives the road surface self-perception function, can monitor the structural status in real time, and provides data support for traffic control and engineering management.

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Abstract

The invention discloses a long-service-life self-sensing sandwich concrete rush-repair rush-building pavement and a construction method thereof, and belongs to the field of composite concrete pavement structures. The pavement comprises a lower surface layer, a middle surface layer and an upper surface layer from bottom to top; the lower surface layer is a long-service-life ultra-high-strength tensile layer, the middle surface layer is a self-sensing compression-resistant and shear-resistant layer, and the upper surface layer is an anti-freezing, impact-resistant and wear-resistant layer. The thickness of the lower surface layer is 85-120mm, the thickness of the middle surface layer is 160-250mm, and the thickness of the upper surface layer is 35-65mm. The lower surface layer is made of ultra-high-performance concrete, the middle surface layer is made of pre-filled intelligent aggregate concrete, and the upper surface layer is made of mixed organic fiber reinforced high-performance concrete. The pavement has a self-sensing function. Through the conductive network constructed by the intelligent aggregate and the conductive mortar in the middle surface layer, the electric signal change of the sandwich concrete pavement can be monitored in real time, the service state of the pavement can be intelligently sensed, and data support is provided for traffic monitoring and intelligent management and maintenance.
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