Method for continuous on-site recycling of an asphalt mixture layer of a pavement and a motor-driven vehicle system therefor
US7448825B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 26, 2007 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Jan 26, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C23/065
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for recycling in place an asphalt mixture layer of a paved road continuously, while moving a self-propelled vehicle system, which comprises a step of heating and softening the asphalt mixture layer, a step of scraping and breaking said hot and softened asphalt mixture layer and keeping the softened mixture at a temperature sufficient not to form an aggregate, to prepare an asphalt mixture having a single-grained structure, a sieving step of classifying said asphalt mixture having a single-grained structure into a plurality of grain size groups, a step of designing mix proportions for converting said asphalt mixture to a recycled asphalt mixture by the use of said plurality of grain size groups classified, a step of mixing uniformly said recycled asphalt mixtures having designed mix proportions, and a step of spreading and compacting said recycled asphalt mixtures having been mixed uniformly, to thereby form a recycled asphalt mixtures layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.