Patent · US Active

Chemical additive for calcium sulphoaluminate-modified portland cement

US9868674B2 · kind B2 · utility

1Cited by

0References

4Claims

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Assignee

NANJING TECH UNIVERSITY · CN

Inventors

Weifeng Li · Linxiang, CN
Suhua Ma · Nanjing, CN
Jin Won YU · Nanjing, CN
Yueyang Hu · Nanjing, CN
Xiaodong Shen · Beijing, CN

Key dates

Filing date	Sep 29, 2015
Grant date	Jan 16, 2018
Priority date	—
Expiry date	Sep 29, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2103/22
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A chemical additive for calcium sulphoaluminate-modified Portland cement comprises the following substances: (a) at least one alkanolamine borate; (b) at least one organic alcohol; and (c) at least one saccharide or a derivative thereof; and the substances and water are sequentially mixed and stirred to obtain the chemical additive for calcium sulphoaluminate-modified Portland cement. The chemical additive for calcium sulphoaluminate-modified Portland cement provided by the invention has better effects of regulating the setting time of the calcium sulphoaluminate-modified Portland cement and improving the 3d/28d strength increase rate, and also has a grinding aid effect when being added during grinding.

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