Roadway structure made from rigid materials
US6158920A · kind A · utility
34Cited by
14References
51Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1997 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Mar 28, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C11/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A roadway structure comprising from top to bottom: PA1 a top layer, PA1 at least one rigid foundation layer having a high modulus of rigidity and supporting the top layer, PA1 the ground, or an untreated material or a damaged roadway, and PA1 in addition particularly having an under layer beneath and adhered to the foundation layer, which under layer has a thickness such that it constitutes a support with a smooth and flat surface for the foundation layer laid thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.