Method of preparing green compositions containing a hydraulic substance and method of utilizing the same
US4299633A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 7, 1980 |
| Grant date | Nov 10, 1981 |
| Priority date | — |
| Expiry date | Feb 7, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28C7/026
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A green concrete mortar is prepared by the steps of preparing a first composition in which water is uniformly deposited about the particles of sand, preparing a second composition consisting of a powder of cement, mixing together the first and second compositions, thus forming stable shells about the particles of the sand, the shells having substantially a constant ratio of water to cement, and adding water to the shelled sand and then kneading the resulting mixture. The green concrete mortar can be poured into a moulding frame prepacked with a coarse aggregate i.e. gravel. After incorporating gravel into the mortar, the resulting green concrete can be moulded or blasted. The green concrete can be readily conveyed to a working station for constructing tunnels, buildings or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.