Calcium/magnesium compound slurry for bituminous road material
US10899929B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2015 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Jun 8, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/52
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention concerns the use of an aqueous suspension of solid particles of a calcium/magnesium compound of formula (A): nCa(OH)2.mCaCO3.aMgO.bMg(OH)2.cMgCO3.I as an agent regulating the breaking of a bitumen emulsion. The invention also concerns a bituminous road material obtained by mixing a solid mineral fraction with a cationic bitumen emulsion of the type binder in water, characterised in that it involves adding, to the mineral fraction, an aqueous suspension of solid particles of a calcium/magnesium compound of formula (A). The invention also concerns a method for preparing a material according to the invention and the use of same for producing surface courses, tack coats or temporary surface courses. The invention finally concerns a method for obtaining a tack coat by spreading a cationic bitumen emulsion, comprising a step of applying an aqueous suspension of solid particles of a calcium/magnesium compound of formula (A).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.