Method of preparing mortar or concrete
US4686852A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 16, 1985 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Oct 16, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C7/0409
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus of measuring water percentages of a fine aggregate comprising the steps of prewetting the fine aggregate, containing the prewetted fine aggregate in an air-tightly closed container, applying a centrifugal force to said container over a predetermined period to remove a portion of a quantity of water deposited on the fine aggregate, and measuring the water content remaining in or on the fine aggregate after being subjected to the centrifugal force, and thus determining a percentage of water adhered to the fine aggregate and a percentage of water of the fine aggregate in which interstice thereof is saturated with water while a surface thereof is dry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.