Abstract
To comprehensively investigate the integrated structural and material design of the epoxy asphalt mixture used in steel bridge deck pavement, the following works have been conducted: 1. The strain level of steel bridge deck pavement was calculated; 2. The ultimate strain level of fatigue endurance for epoxy asphalt concrete was measured; 3. The effect of water tightness of epoxy asphalt mixture on the bonding performance of steel plate interface was tested. 4. For better performance evaluation, quantitative analysis of the anti-skid performance of epoxy asphalt mixture was carried out by testing the structure depth using a laser texture tester. Results show the following findings: 1. The fatigue endurance limit strain level of epoxy asphalt mixture (600 με) was higher than that of the steel bridge deck pavement (<300 με), indicating that the use of epoxy asphalt concrete has better flexibility and can achieve a longer service life in theory; 2. The epoxy asphalt concrete has significant water tightness to protect the steel plate interface from corrosion and ensure good bonding performance; 3. The porosity of epoxy asphalt mixture used in steel bridge deck paving should be controlled within 3%; 4. In terms of anti-skid performance of bridge deck pavement, the FAC-10 graded epoxy asphalt mixture is recommended when compared with EA-10C.
Highlights
The pavement of long-span steel bridge decks is a worldwide engineering and technical difficulty
In terms of anti-skid performance of bridge deck pavement, the FAC-10 graded epoxy asphalt mixture is recommended when compared with EA-10C
The two values are compared to verify whether the following deformation of the epoxy asphalt mixture meets the requirements; the interface fracture ratio of epoxy asphalt mixture with different porosity and the bonding layer is collected through pull test, so as to analyze the water tightness effect of epoxy asphalt mixture of steel bridge deck pavement; the anti-skid performance is optimized through the grade study of epoxy asphalt mixture, so as to carry out the integrated design of structure and materials for epoxy asphalt mixture in steel bridge deck pavement
Summary
The pavement of long-span steel bridge decks is a worldwide engineering and technical difficulty. The pavement structure must have a certain degree of following deformation with the steel plate, water tightness, and anti-skid performance to ensure its requirements on durability and function [1,2]. The two values are compared to verify whether the following deformation of the epoxy asphalt mixture meets the requirements; the interface fracture ratio of epoxy asphalt mixture with different porosity and the bonding layer is collected through pull test, so as to analyze the water tightness effect of epoxy asphalt mixture of steel bridge deck pavement; the anti-skid performance is optimized through the grade study of epoxy asphalt mixture, so as to carry out the integrated design of structure and materials for epoxy asphalt mixture in steel bridge deck pavement
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