JPH02232468A - Injecting member for injecting mineral binder in building material - Google Patents

Abstract

PURPOSE: To easily push the mineral binder into a construction material by integrally forming a connection part with a shaft part, and forming the diameter of the connection part smaller than the diameter of the shaft part so as to form a stopper shoulder. CONSTITUTION: Diameter of a connection part 2 is formed smaller than the diameter of a shaft part 3 so as to form a stopper shoulder 5, and the connection part 2 and the shaft part 3 are integrally formed with plastics so as to form a filling member 1a. A striking tool 6 is placed on the stopper shoulder 5, and the stopper shoulder 5 is struck by the striking tool 6 so as to press the filling member 1a into a bag hole 7. Furthermore, after a hose provided with a connecting member is inserted into the connection part 2 of the filling member 1a, mineral binder is pressed into the bag hole 7 by a high-pressure pump through a vertical hole 8 of the filling member 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The invention relates to an injection member according to the preamble of claim 1.

[Prior art 1] In order to repair building materials with cracks, it is known to compact the cracks by injecting synthetic resin. For this purpose, a blind hole is drilled in the area where the crack is present, into which an injection member is inserted for injection of the synthetic resin.

After the connection, which is generally designed as a nipple, is screwed into the end face of the injection member protruding from the blind hole, a high-pressure bong presses the metal resin into the crack via a hose connected to the connection.

For the repair of aged and porous water-permeable concrete, especially in tunnel and channel structures.
A mineral binder is used instead of synthetic oil, and this binder is applied starting from the blind hole in order to compact the entire concrete structure through an injection member inserted into the blind hole with a certain amount of butter. It is well known that the material is pushed in the radial direction under high pressure. However, since synthetic resins and mineral binders have significantly different compositions and flow characteristics, injection members used with synthetic resins are unsuitable for injecting mineral binders.

OBJECT OF THE INVENTION It is an object of the invention to provide an injection member which is suitable for injecting mineral binders, is inexpensive to produce, and is simple and quick to install.

[Means for Solving the Problems] The gist of the present invention that solves the above problems is as described in claim 1.

[Operations and effects of the invention] The connection part formed integrally with the shaft part by injection method,
The longitudinal holes guided through the connections and details can have a uniform diameter over their entire length. This results in an unobstructed and problem-free flow of the binder. Moreover, sealing problems between the connection and the shank are avoided.

According to the invention, the injection member consists of one part and is therefore inexpensive to manufacture. For installation, the injection member is inserted into a pre-drilled blind hole with a diameter slightly larger than the smallest diameter of the conical detail. The injection member is driven into the blind hole by multiple blows with a tubular percussion tool placed over the connection and supported on the shoulder shoulder formed by the larger shank diameter, thereby causing the injection member to details are permanently pressed into the holes. After the high-pressure pump hose is connected, binding agent is injected into the blind hole until the binding agent overflows from the injection member inserted next. To facilitate the driving of the injection member, the outer circumferential surface of the shank can be provided with an annular rib, which rib can be designed as a thread with a serrated cross section. According to this configuration, the shaft end provided with the connecting portion can be given a polygonal shape for holding the wrench. In this way, the injection member can be mechanically driven into the blind hole using a percussion screwdriver.

[Example 1] The injection members 1a and 1b shown in FIGS. 1 and 2 are made of impact-resistant plastic by an injection method, and the connecting portion 2 is integrally attached to the shaft portion 3. It is manufactured. In both embodiments, the shank 3 is formed in the shape of a rounded mackerel, and the shank 3 of the injection member 1a has a smooth outer circumferential surface in the embodiment shown in FIG. A shoulder shoulder 5 is formed because the connecting part has a reduced diameter compared to the diameter of the shank.

A striking tool 6 that is placed over the connecting portion can be placed on this shoulder of the stopper. With this percussion tool 6, the injection member is driven into the blind hole until the detail of the injection member is tightened in the blind hole. After a hose with a suitable coupling member has been inserted into the connection 2 of the injection member, the mineral binder is forced into the blind hole through the vertical hole of the injection member 1a, lb by means of a high-pressure bolt. Due to the high pressure of approximately 200 bar, the binder penetrates into the building material through the walls of the blind hole and compacts the material. Injection is performed until binding agent rises from the adjacently inserted injection members.

Injection member 1 shown in FIG. The shaft portion 3 of b is provided with an annular rib 9 formed as a thread on its outer peripheral surface.

For insertion of this type of injection member, it is effective to use a percussion screwdriver. For the transmission of torque from the tool to the dosing member, the dosing member is provided with a square section at the end of the shaft with a connection, into which a wrench, which is tightened on the tool, is placed.

[Brief explanation of the drawing]

The figure is a view of FIG. 2 viewed from above.

Claims (1)

[Claims] 1. An injection member for injecting a mineral binder into building materials, which is formed into a conical shape and includes a connection part for a conduit for supplying the binder and a vertical hole. If the connection part (2) is equipped with a plastic shaft (
3) in a building material, characterized in that the diameter of the connecting part (2) is reduced compared to the diameter of the shaft part (3) due to the formation of the stopper shoulder (5). Injection member for injecting mineral binder into 2. The injection member according to claim 1, wherein an annular rib (9) is provided on the outer peripheral surface of the shaft portion (3). 3. Injection member according to claim 2, wherein the rib (9) is formed as a thread. 4. Injection member according to claim 3, wherein the shank end with the connection part (2) has a polygonal cross section for engaging a wrench.