Process for the manufacture of a grout for concrete

Patent metadata

Field	Value
Publication number	US-9944566-B2
Application number	US-201514681795-A
Country	US
Kind code	B2
Filing date	Apr 8, 2015
Priority date	Apr 8, 2014
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

The present invention relates to a process for the manufacture of a grout for concrete comprising a stage of mixing a hydraulic binder and water, characterized in that the process comprises a stage of deep freezing the water in the solid form.

First claim

The invention claimed is:

1. A process for the manufacture of a grout for concrete, comprising:
a stage of mixing a hydraulic binder and water; and
a stage of deep freezing the water to solid form,
wherein the water is solidified prior to the mixing stage, the solidified water being reduced to a powder, the water powder exhibiting a particle size which is less than the particle size of the hydraulic binder.

2. The process of claim 1 , in which, during the deep freezing stage, the water is maintained at a temperature of less than 0° Celsius.

3. The process of claim 1 , comprising a stage of addition of an adjuvant.

4. The process of claim 1 , further comprising:
a stage of storage of the grout at low temperature of less than or equal to 0° Celsius.

5. The process of claim 1 , further comprising:
a stage of warming the solidified water and hydraulic binder mixture to a sufficiently high temperature for the water to become liquid, this stage being subsequent to the mixing stage and to the deep freezing stage.

6. A process for the manufacture of a grout according to claim 1 , in which the grout is utilized for the coating of nuclear waste.

7. A process for the manufacture of a grout according to claim 1 , in which during the deep freezing stage, the water is maintained at a temperature of less than or equal to −18° Celsius.

8. A process according to claim 1 , comprising a stage of storage of the grout at low temperature of less than or equal to −18° Celsius.

9. A grout for concrete comprising:
a mixture of a hydraulic binder and water in which the water is in a solid form, the solid water being reduced to a powder, the water powder exhibiting a particle size which is less than the particle size of the hydraulic binder.

10. The grout for concrete of claim 9 , in which the mixture comprises one or more adjuvants.

Assignees

• Soletanche Freyssinet

Inventors

• Chaniat Alain
• Botti Didier Jean
• Sarraf Riad
• Honnorat Christian

Classifications

• B28C5/468 Primary

  Cooling, e.g. using ice · CPC title

• C04B28/02

  containing hydraulic cements other than calcium sulfates · CPC title

• B28C7/0038

  Cooling, e.g. using ice · CPC title

• C09D1/06

  cement · CPC title

• Y02W30/91

  Use of waste materials as fillers for mortars or concrete · CPC title