Method for testing self drying effect of cement-based material
US9470672B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2011 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Dec 21, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/383
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a method for testing the self-drying effect of a cement-based material, capable of testing the change in humidity of the cement-based material after the final setting until the Id stage of adding water, so as to reflect the water consumption therein and the self-drying course. In the time period after the final setting of the cement-based material until the 1 d stage of adding water and forming, the dew-point temperature inside the cement-based material is tested, and then the relative humidity inside the cement-based material is calculated using a formula. The present invention can test the change in humidity of the cement-based material after the final setting until the Id stage of adding water, so as to reflect the internal water consumption therein and the self-drying course. Further provided is a multi-stage test method for the whole course, capable of testing the whole course of continuous reduction in relative humidity from an initial 100%, in sealed conditions, starting with adding water and formation of the cement-based material, so as to provide a theoretical foundation for the quantitative calculation of the self-drying and shrinking thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.