Patent · US Active

Method of enhancing the latent hydraulic and/or pozzolanic reactivity of materials

US10065888B2 · kind B2 · utility

1Cited by

0References

31Claims

0Family size

Assignee

HEIDELBERGCEMENT AG · DE

Inventors

Dirk Schmitt · Leimen, DE
Mohsen BEN HAHA · Heidelberg, DE
Anca Itul · Heidelberg, DE
Maciej ZAJAC · Heidelberg, DE
Nicolas SPENCER · Malsch, DE

Key dates

Filing date	May 7, 2014
Grant date	Sep 4, 2018
Priority date	—
Expiry date	May 7, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P40/10
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention relates to a method of enhancing the latent hydraulic and/or pozzolanic reactivity of materials, especially of waste and by-products, comprising the steps: providing a starting material containing sources for CaO and at least one of SiO2 and AI2O3 mixing the starting material with water at a water/solids ratio from 0.1 to 100 hydrothermal treating of the starting material mixed with water in an autoclave at a temperature of 100 to 300° C. and a residence time from 0.1 to 24 hours to provide an autoclaved product suitable as supplementary cementitious material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.