Concrete crack self-repairing agent particle as well as preparation method and application thereof

• Main Authors: HE BO, LAI JUNXIANG, WEI SHUANGNI, ZHANG YUGUO, WANG YINGHUI, YAO SHENGXUN, SUN CONGTAO, ZHAI XIAOFAN
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2024
• Subjects: ARTIFICIAL STONE; BEER; BIOCHEMISTRY; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CULTURE MEDIA; ENZYMOLOGY; LIME, MAGNESIA; METALLURGY; MICROBIOLOGY; MICROORGANISMS OR ENZYMES; MUTATION OR GENETIC ENGINEERING; PROCESSES USING MICROORGANISMS; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS; REFRACTORIES; SLAG; SPIRITS; TREATMENT OF NATURAL STONE; VINEGAR; WINE

The invention discloses a preparation method of concrete crack self-repairing agent particles. The preparation method comprises the following steps: carrying out activation culture on bacillus pasteurii freeze-dried powder and preparing a spore suspension; expanded perlite is mixed with the spore suspension under the condition that the vacuum degree is-0.06 MPa, and bacterium-loaded perlite is obtained; performing drying; spraying the prepared nutrient solution on the surface of the bacterium-loaded perlite; putting the dried bacterium-loaded perlite into a stirring machine, then pouring the prepared potassium magnesium phosphate cement mixture into the stirring machine, and starting the stirring machine to enable the potassium magnesium phosphate cement mixture to be uniformly wrapped on the surface of the bacterium-loaded perlite to form particles; after wrapping is completed, the particles are placed in a container to be cured and maintained for 1 d, and finally the particles are placed in a 40-DEG C force