Method for preparing hot-mixed asphalt mixture
US11655189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2020 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Jul 1, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/0075
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides a method for preparing a hot-mixed asphalt mixture, and relates to the technical field of road engineering. In the present invention, asphalt and aggregates are preheated separately, where the aggregates include coarse aggregates and fine aggregates; the coarse aggregates, part of the fine aggregates and asphalt that are preheated are subjected to a first mixing to obtain a first mixture; the remaining fine aggregates are added to the first mixture for a second mixing to obtain a second mixture; and a mineral powder is added to the second mixture for a third mixing, and discharging is conducted to obtain a hot-mixed asphalt mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.