Vacuum grouting device for road surface after pre-burying aggregate concrete and construction method of vacuum grouting device

Abstract

The invention discloses a vacuum grouting device for road surface after pre-burying aggregate concrete, which comprises a pavement structure layer, a slurry feeding system, a slurry stirring system and a vacuum assembly, the upper end of the pavement structure layer is covered with a sealing layer to realize full sealing, the slurry feeding system comprises a mud jacking pump pressure gauge, and the slurry stirring system comprises a slurry storage barrel and a slurry stirring machine which are connected with each other; the vacuum assembly comprises a vacuum pump, a negative pressure box, a vacuum meter and a waste slurry barrel. The invention further discloses a construction method for vacuum grouting of the pre-buried aggregate concrete. According to the method, a traditional pre-buriedconcrete grouting method is broken through, the grouting efficiency is improved by manufacturing the vacuum condition, grout is filled and diffused to meet the design requirement, and the purpose ofstrengthening the concrete structure is achieved after grout diffusion and gelatinization solidification. In actual engineering, the construction requirements can be better met, the specified strengthcan be achieved, the construction quality can be improved, the construction period can be shortened, the construction cost can be reduced, and the construction efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of vacuum grouting devices, in particular to a vacuum grouting device and a construction method thereof after the pavement is pre-embedded with aggregate concrete. Background technique [0002] Pre-embedded aggregate concrete is concrete made by mixing coarse aggregate evenly and placing it in a pre-designed formwork, and then filling the internal void with cement-based slurry. The strength of pre-embedded aggregate concrete is closely related to the fullness of grouting. If the slurry does not fill the voids of the aggregate, it is easy to form a honeycomb structure, and its strength will be greatly reduced, thus failing to meet the design strength requirements. In order to improve the fullness of grouting, pressure grouting is mostly used in traditional grouting methods. The pressure grouting process is to use pressure to inject grout into the pre-embedded aggregate until the pores around the grouting poi...

AI Technical Summary

Problems solved by technology

In the actual construction process, due to conditions and equipment limitations, it is difficult to achieve the grouting fullness required by the design using traditional pressure grouting, and it is easy to cause surface uplift due to unstable grouting pressure

[0003] At present, scholars at home and abroad have little research on the embedded concrete grouting process, and the problems of traditional grouting technology have not been effectively solved

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