Method for forming a test specimen from a mixture of asphalt concrete
US5916504A · kind A · utility
8Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1997 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Jul 7, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/65
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for forming a test specimen from an asphalt concrete mixture includes providing a mold to receive a quantity of the mixture and adding a predetermined quantity of the mixture to the mold. The mixture in the mold is compressed at a pressure of at least about 7 psi while vibrating the mixture in the mold at a rate of at least about 2400 cycles per minute. The method also includes maintaining the vibration of and the application of compressing pressure to the mixture in the mold until the mixture obtains a predetermined mix design density within a range of about 90-97%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.