Self-repairing concrete having polyurethane polymer micro-capsules and method for fabricating the same

US8222323B2 · kind B2 · utility

Inventors

• Feng Xing · Nanhu, CN
• Zhuo Ni · Tangxia, CN

Key dates

• Filing date: Oct 24, 2008
• Grant date: Jul 17, 2012
• Expiry date: Oct 24, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2111/72
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A self-repairing concrete includes polyurethane polymer micro-capsules, in which the polyurethane polymer micro-capsules are mixed for a fixed function of micro-cracks. The quality mixture ratio is: concrete/micro capsules/water=100:1-15:15-50. The manufacturing method is weighing a full amount of water in a container, adding polyurethane polymer micro-capsules, stirring, until fully dispersed microcapsules; pouring the water into the mixing container, adding the corresponding quality of cement; stirring; adding sand and gravel filling materials, conducting worksite watering, ⅓ volume for each time, vibrating, and air exhausting; until the slurry filling mold.