Device and construction method for reinforcing soft foundation through micro-nano CO2 carbonization

• Main Authors: GAO CHANGHUI, LIU SONGYU, DU GUANGYIN, SEO WOONG, YANG YONG, ZOU GUOCHUN, BAI MEI
• Format: Patent
• Language: Chinese; English
• Published: 25.08.2023
• Subjects: ADHESIVES; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DYES; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; LIME, MAGNESIA; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MINING; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PAINTS; POLISHES; REFRACTORIES; SLAG; SOIL SHIFTING; TREATMENT OF NATURAL STONE; UNDERGROUND OR UNDERWATER STRUCTURES

The invention belongs to the technical field of civil construction engineering foundation treatment, and particularly discloses equipment for reinforcing a soft foundation through micro-nano CO2 carbonization and a construction method. The equipment comprises a main machine system, a micro-nano CO2 generating system and a feeding system, CO2 gas can be injected into a stirring pile body of active magnesium oxide and a soft foundation in a micro-nano bubble mode, the mass transfer efficiency and the utilization efficiency of the CO2 gas are improved to the maximum extent, then the reaction efficiency of the CO2 gas and the active magnesium oxide is improved, and the utilization rate of the CO2 gas is increased. The problem that in an existing carbonization curing technology, diffusion of CO2 gas in the stirring pile body is slow and uneven is effectively solved, and the foundation treatment period is shortened. Besides, the micro-nano CO2 bubble solution, the active magnesium oxide and the soft foundation are