Patent · US Active

Engineered self healing cementitious composites

US7572501B2 · kind B2 · utility

8Cited by

11References

17Claims

0Family size

Assignee

THE REGENTS OF THE UNIVERSITY OF MICHIGAN · US

Inventors

Victor C. Li · Ann Arbor, US
En Yang · Singapore, SG

Key dates

Filing date	Apr 17, 2008
Grant date	Aug 11, 2009
Priority date	—
Expiry date	Apr 17, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31938
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Cementitious composites engineered for self-healing, combining self-controlled tight crack width and extreme tensile ductility. Self-healing takes place automatically at cracked locations without external intervention. In the exemplary embodiment, fiber-reinforced cementitious composites with self-controlled tight crack width less than 50 μm and tensile ductility more than 2% are prepared. Self-healing in terms of mechanical and transport properties recovery of pre-damaged (by pre-cracking) composite is revealed in a variety of environmental exposures, include wetting and drying cycles, water permeation, and chloride submersion.

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