Invention Title: Engineered Self-Healing Cementitious Composites

Inventors: V.C. Li and E.H. Yang
US Patent No. 7,572,501
Issued in August, 2009


Suggested Key Words: Cementitious Composites, Cement, Self Healing

Abstract: Cementitious composites engineered for self-healing, combining selfcontrolled 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 50µm and tensile ductility more than 2% are prepared. Self-healing in terms of mechanical and transport properties recovery of predamaged (by pre-cracking) composite is revealed in a variety of environmental exposures, include wetting and drying cycles, water permeation, and chloride submersion.

   
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