SUSTAINABLE SELF-REPAIRING MICROCAPSULE FOR CRACKS IN COAL MINE WIND-BLOCKING MATERIAL AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2020/015039

A1

A sustainable self-repairing microcapsule for cracks in a coal mine wind-blocking material, which relates to the technical field of repairing cracks in coal mine wind-blocking materials, and which comprises a microcapsule core material and a microcapsule wall material, the microcapsule core material being prepared from a freeze-dried bacterial powder and a substrate. Urease-producing bacteria are used to provide a method for protecting bacteria for long-term survival in cement-based materials, while further being able to provide sufficient nutrients, and being able to reduce the effects of bacteria adulteration on the mechanical properties of cement-based materials. The freeze-dried bacteria powder and the substrate thereof are manufactured into microcapsules, and the microcapsules are added when mixing a cement-based material; once concrete cracks, the microcapsules rupture, spores inside of the material are activated, normal metabolism is carried out, and calcium carbonate precipitation is continuously induced, thereby continuously achieving the self-repair of cracks in a coal mine wind-blocking material.

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HU XIANGMING (CN)
CHENG WEIMIN (CN)
WU MINGYUE (CN)
ZHAO YANYUN (CN)
XUE DI (CN)

PCT/CN2018/100497

January 23, 2020

August 14, 2018

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UNIV SHANDONG SCIENCE & TECH (CN)

C04B24/38; C12N11/14

CN107973542A	2018-05-01
CN107975385A	2018-05-01
CN103043937A	2013-04-17

QINGDAO ZHIDILINGCHUANG PATENT AGENCY CO., LTD (CN)

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