Novel method of grouting under plate

Abstract

The invention provides a new process for concrete pouring under plate, comprising the following steps of: pouring top plate, boring with boring machine, installing pouring pipe, and single-pore pouring. The new process has the advantages that the main novelty of the new process for concrete pouring under plate is blocking and dredging; the blocking means that the outlet passage for lost slurry is blocked and the dredging means the flowing direction of the slurry along the concrete plate; the slurry loss and waste are avoided, the construction investment is saved; the concrete pouring is carried out under the top plate, the flowing direction of the slurry is easy to be controlled, the reinforced soil is more uniform and compacter and has high quality; the concrete pouring effect is more obvious; the practices in places such as Wugang, Baogang, Debao city of Guangxi, etc. show that about 20-50% of the slurry loss can be saved relatively. The strength of soil in-situ after the concrete pouring can be directly gained by methods such as standard penetration test or light sounding test, etc. 28 days after the completion of the concrete pouring and the mechanical property is greatly improved compared with that of the soil in-situ before the concrete pouring.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a new construction method of under-slab grouting. Background technique [0002] The casing wall protection method in the traditional grouting process in the gravel layer is mainly to drill into the hole first, and after the casing is lowered, the grouting flower tube is lowered to carry out layered grouting. During grouting, it is easy to leak grout along the pipe wall and in the soil layer, the quality of grouting is difficult to guarantee, more pipes are consumed, the construction process is more complicated, and the production efficiency is low. Contents of the invention [0003] The purpose of the present invention is to develop a new construction method of under-slab grouting which reduces grouting loss, saves raw materials, enhances the strength of in-situ soil, and improves mechanical properties. [0004] The new construction method of grouting under th...

AI Technical Summary

Problems solved by technology

During grouting, it is easy to leak grout along the pipe wall and inside the soil layer, the quality of grouting is difficult to guarantee, more pipes are consumed, the construction process is more complicated, and the production efficiency is low