4results about How to "Short initial setting time" patented technology

The invention provides a dental silicone rubber impression composition, a dental silicone rubber impression material kit and a preparation method and application of the dental silicone rubber impression composition and the dental silicone rubber impression material kit, D50 of reinforcing filler in the impression composition is 5-22 microns, and the particle size distribution of the reinforcing filler in the impression composition meets the conditions that D60-D40 is smaller than or equal to 12 m and D40-D20 is smaller than or equal to 12 m at the same time. The particle size distribution of the reinforcing filler in the impression material is controlled to be concentrated enough, so that the initial setting time of the silicone rubber impression material is controllable, and meanwhile, the silicone rubber impression material with relatively high overall strength is also obtained.

The present application relates to cement pole production technical field, especially to a kind of multifunctional integrated pole automatic production system, comprising: fixed mechanism, fixed mechanism is used to fix and hoist reinforcement cage;Mold closing mechanism, mold closing mechanism is located below fixed mechanism and is used to install mold, mold closing mechanism includes mold, is used to fixedly install mold closing assembly and is used to connect fixed mechanism and mold closing mechanism engagement assembly;Grouting mechanism, grouting mechanism is located at one end of mold closing mechanism and is used to carry out cement grouting in mold, grouting mechanism includes grouting assembly and dredging component;Centrifugal mechanism, centrifugal mechanism is used to carry out centrifugal initial setting to the mold that grouting has been completed, centrifugal mechanism includes driving mold rotation driving wheel and quick-drying component.

The invention provides a filling mining slurry rapid curing system. The filling mining slurry rapid curing system comprises a slurry receiving subsystem, a curing subsystem and a rapid pumping subsystem. The slurry receiving subsystem comprises a slurry receiving bin and a slurry stirring device; the slurry receiving bin receives low-concentration filling slurry conveyed from the ground, and the slurry stirring device continuously stirs the slurry in the slurry receiving bin to prevent segregation; the slurry receiving bin and the slurry stirring device are matched together, so that the buffering and temporary storage effects are achieved, the pipe blocking accident caused by interruption of the preparation process of the ground slurry is avoided, and the continuous preparation and transmission effects on the slurry are achieved; the curing subsystem comprises a curing bin, and a thickening device, an additive adding device and a stirring device are arranged in the curing bin; and the maintenance subsystem is used for increasing the concentration of the slurry, accelerating the hydration reaction and curing process of the slurry, shortening the initial setting time of the slurry, and playing a role in separating and buffering slurry ground preparation and filling operation.

The invention discloses a process for treating a strong karst foundation through micro steel pipe lead hole high-pressure grouting in the technical field of engineering construction, and the process comprises the following steps: S1, pre-burying a steel pipe and filling the steel pipe with high-grade concrete according to mud sources of the bottom and the side wall of a pile hole; s2, drilling holes in the embedded steel pipe, washing the drilled holes in the steel pipe with high-pressure clear water, and then performing high-pressure grouting treatment on karst fissures and broken rocks; and S3, after high-pressure grouting is finished and before initial setting of concrete, third-level steel is inserted to serve as a shear-resistant component and welded into a steel bar bundle to stretch into the bearing platform, and it is ensured that stress is transmitted to a complete rock layer. The stability of the foundation of the adjacent building is not affected in the treatment construction process, and good effects are achieved in the aspects of saving the project construction period, reducing the economic input, effectively treating strong karst holes and the like under the condition that the column position and the upper structure of the high-rise building cannot be adjusted.