A grouting sleeve assembly and method for improving grouting quality

Abstract

The invention discloses a grouting sleeve assembly and a method for improving grouting quality. The grouting sleeve assembly includes a grouting sleeve and a secondary grouting device, the grouting sleeve includes a sleeve body, and the side wall of the sleeve body is arranged from left to right A grout outlet, a multi-function hole and a grouting port are arranged in sequence along its axis, a nut is arranged at the multi-function hole, the nut is movably sleeved outside the sleeve body, and the grouting port is provided with a rubber plug to prevent the mortar from flowing out after grouting. A slurry sealing device is provided, and elastic slurry sealing rings are respectively provided at the openings at both ends of the sleeve body. The invention has low detection cost, convenient operation and high precision, and can observe and measure grouting defects and grouting plumpness intuitively and clearly. It can not only ensure the connection quality of the sleeve, but also avoid the problem of unqualified grouting quality inspection in the later stage due to serious failure of the communication cavity, no slurry in the slurry outlet, and slurry backflow in the sleeve. While ensuring the quality, the construction is simplified. ,Improve efficiency.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a grouting sleeve assembly and a grouting method for improving grouting quality. Background technique [0002] With the development of the construction industry, especially the rapid development of high-rise buildings, steel bars have become the main support of building structures in construction projects. At present, steel bar connection technology can be divided into three categories, namely steel bar binding connection, steel bar welding, and steel bar mechanical connection. [0003] (1) When the tie connection is used, the diameter range of the tie and lap steel bars is limited, and the steel bars in the tension area should not be used, and the steel bars at the lap joints are often too dense, and the amount of steel bars increases. When the welding method is used, although it generally does not have the problems of strength, stiffness and destructive performance, the w...

AI Technical Summary

Problems solved by technology

[0003] (1) When using binding connections, the diameter range of the binding and lapping steel bars is limited, and the steel bars in the tension area are not suitable for use, and the steel bars at the lap joints are often too dense, and the amount of steel bars is increased

When the welding method is used, although there are generally no problems in terms of strength, stiffness, and destructive performance, the welding equipment is large in size and inconvenient to move. The construction and operation space for on-site welding is small, and welding construction is difficult, and it is affected by the technical level of workers. Larger, unstable welding quality, low efficiency, high power consumption, certain pollution to the environment, and easily affected by the power supply on the site

And welding will also have defects such as undercut and incomplete penetration

Mechanical connection joints include sleeve extrusion joints, tapered thread joints, upsetting straight thread joints, etc., but the connection process is too complicated and requires small splicing errors. If the end of the steel bar needs to be threaded during the production process, the threaded Some parts must be strictly protected during transportation, hoisting and construction

[0004] (2) When the welding connection is adopted, the welding equipment is large in size and inconvenient to move. Due to the small construction and operation space for on-site welding, the welding construction is difficult, and it is greatly affected by the technical level of the workers, so the welding quality is difficult to guarantee

[0007] When the grouting sleeve is grouted, the following problems often occur: the connecting cavity fails due to the offset of the steel bar in the grouting sleeve; the grout does not come out, and the plug falls into the sleeve or the bottom of the sleeve during the production or installation of the component The blockage of the nearby connecting cavity may cause the grouting outlet of the sleeve to not produce grout when the connecting cavity is grouted; before the grouting of the connecting cavity is completed, if the pressure is not sufficient before the grouting equipment is pulled out, and the slurry does not fill various small gaps, the grouting will end After the grout continues to flow to fill the gap, it will cause the slurry outlet to flow back; after the grouting of the connecting cavity is completed, the grouting hole is not blocked in time, which often causes the slurry to flow back

[0008] When the quality of grouting is unqualified after the later detection, the method of secondary grouting by drilling is often used, but the construction is cumbersome and the operation is complicated and inconvenient

Images