Method for evaluating influence of humidity on asphalt-aggregate adhesion
US12130226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2022 |
| Grant date | Oct 29, 2024 |
| Priority date | — |
| Expiry date | Jan 20, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20032
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is method for evaluating influence of humidity on adhesion of asphalt-aggregate adhesion, the method includes the following steps: S1 putting multiple pull-out specimens into constant temperature and humidity phases with different relative humidity for curing, after the humidity reaches equilibrium, carrying out macroscopic mechanical pull-out test out and obtaining images of two aggregate surfaces of each broken pull-out specimen; S2 cropping the images, and then importing the cropped images into the Images Pro Plus software; S3 obtaining asphalt peeling rate according to the pixel value and calculation formula of asphalt peeling rate; S4 according to the asphalt peeling rate, asphalt cohesive energy and asphalt-aggregate binding energy, combined with calculation formula of asphalt-aggregate interface energy, obtaining asphalt-aggregate interface energy, and evaluating asphalt-aggregate adhesion according to the interface energy. This method realizes the quantitative evaluation of the adhesion of asphalt and aggregate under different humidity conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.