Slump flow monitoring
US8818561B2 · kind B2 · utility
22Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2009 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jul 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2011/0053
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and system for monitoring slump flow of hydratable cementitious material such as wet concrete in a rotating mixing drum. Whereas prior art methods use a single value of the hydraulic pressure for turning the drum (such as the average value) and correlating with slump values using the vertical drop measurements of the standard slump test (e.g. ASTM C 143-05), the present invention involves analysis of values corresponding to slump flow of concrete samples, preferably having slump flow values of 16-36 inches when measured using standard slump flow tests (e.g., ASTM C1611-05).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.