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Abstract

To solve the problem of the lack of evaluation indicators for the overlay time of asphalt overlays on cement concrete beam bridges, this paper adopted the rebound test and Mohs hardness test to evaluate the surface hardness of concrete, with the rebound ratio λ and hardness value f proposed. Meanwhile, it analyzed the relationship between the rebound ratio λ, hardness value f, and interlayer bonding strength via drawing tests and 45° shear tests, and determined the overlay time of asphalt overlays. Based on physical projects, engineering verification was conducted on the overlay time of asphalt overlays. The results reveal that the overlay time of asphalt overlays for cement concrete beam bridges can be evaluated based on λ and f. When λ ≥ 75% or f ≥ 4, the overlay time of asphalt overlays for cement concrete beam bridges can be carried out.

Publication Date

11-8-2022

DOI

10.14048/j.issn.1671-2579.2022.05.017

First Page

92

Last Page

96

Submission Date

April 2025

Reference

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