Patent · US Active

Set control composition for cementitious systems

US11274064B2 · kind B2 · utility

0Cited by

2References

17Claims

0Family size

Assignee

CONSTRUCTION RESEARCH & TECHNOLOGY GMBH · DE

Inventors

Harald Grassl · Feichten, DE
Joachim DENGLER · Trostberg, DE
Alexander SCHOEBEL · Trostberg, DE
Gerhard Albrecht · Prien am Chiemsee, DE
Maxim Pulkin · Mannheim, DE

Key dates

Filing date	Oct 18, 2018
Grant date	Mar 15, 2022
Priority date	—
Expiry date	Jan 28, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/91
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A set control composition for cementitious systems comprises (a) an amine-glyoxylic acid condensate, and (b) at least one of (i) a borate source and (ii) a carbonate source. The carbonate source is selected from inorganic carbonates having an aqueous solubility of 0.1 gL−1 or more, and organic carbonates. The set control composition improves workability of cementitious systems for prolonged periods of time without compromising early compressive strength. Due to the retarding action of the set control composition, the dosage of dispersant(s) necessary to obtain a desired flowability of the cementitious system can be reduced.

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