JPS603399A - Cartridge for securing bolt - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anchor bolt fixing cartridge for fixing an anchor bolt to concrete, rock, etc.

Conventional anchor bolt fixing methods include drilling holes in concrete, rock, etc. (hereinafter referred to as the base material) (loading a cartridge into the 7th hole), and inserting the anchor bolt connected to a hammer drill etc. while applying a rotational impact. A known method is to crush a cartridge, mix and harden the viscous liquid resin, aggregate, and curing agent 7 contained in the cartridge, and then fix the anchor bolt.

As shown in FIG. 1, the cartridge used in this method includes a viscous liquid resin 1 sealed in an outer container 4, a bubble portion 3 created by sudden air, and a curing agent-coated aggregate 2 sealed in an inner container 5. It is known that
Publication No. 32).

In this cartridge, the cartridge is loaded into a hole in the base material, and is inserted toward the bottom of the hole by the rotational impact of an anchor bolt connected to a spray drill, etc., and the cartridge is crushed and hardened with the viscous liquid resin stored inside. Even if the aggregate coated with the hardening agent is crushed and mixed by stirring, the hardening agent coating J- on the surface of the aggregate remains fairly firmly attached, so if the stirring impact is applied for a certain period of time, the crushing will be incomplete and the broken bones will remain. Only the covered parts of the material react with the viscous liquid resin, the hardening agent is distributed unevenly, and the reactive parts remain, or the cross-linking reaction does not take place sufficiently, causing the anchor bolt to solidify. There is a risk that the adhesive force required for this purpose may not be obtained.

In order to eliminate the above-mentioned defects, by applying a stirring impact for a certain period of time to disperse the hardening agent, the granular aggregate is crushed to a size smaller than the required limit and made into fine particles, making the anchor bolt more solid. The bridging effect, which is one of the commercially important functions for adhesion, is attenuated, resulting in negative effects such as the inability to obtain the desired adhesion force. In addition, stirring for more than a certain period of time may cause the carefully mixed adhesive to be discharged from the hole opening and not contribute to adhesion between the base material and the bolt, or even if the tip of the bolt has reached the bottom of the hole. By continuing the rotational impact, the inner wall and hole bottom of the base material are cut, and as a result, powder from the base material gets mixed into the viscous liquid resin, inhibiting the curing reaction, or causing the viscous liquid resin to start gelling. Despite this, continuous agitation lowers the exothermic temperature and solidifies without sufficient initial hardening reaction, all of which have drawbacks that inhibit the ability of the anchor bolt to firmly adhere to the base material hole. had.

The present invention relates to a cartridge for bolt fastening that eliminates these drawbacks and is capable of developing a specified fastening force at an extremely early stage.

That is, the present invention provides a cartridge for bolt fixing, which is comprised of a crushable outer container and a crushable inner container, in which a viscous liquid resin is stored, and an aggregate and a hardening agent are stored in the other. A cartridge for bolt fixing that is substantially uniformly mixed with aggregate, and preferably a bolt fixing cartridge that is melt-sealed by replacing the space of the container containing the viscous liquid resin with an inert gas. car) It is IJ Dodge.

The cartridge of the present invention will be explained below with reference to the drawings.
i-ru.

FIG. 2 is a Wr side view showing one embodiment of the present invention,
It consists of a crushable outer container 4 and a crushable inner container 5. A viscous liquid resin 1 is sealed in the inner container 5, and the air bubbles 8 are replaced with an inert gas at 0.degree. The outer container 4 is filled with a substantially uniform mixture of the aggregate 6 and the granular curing agent 7, and is sealed or sealed with a camp 9.

The shape of the container may be a cylinder or a polygonal prism such as a triangular prism, a quadrangular prism, or a pentagonal prism. The Ueda pillar shape is suitable for manufacturing, storage, and handling.

The material of the container is not particularly limited as long as it can be crushed by the rotational impact movement of an anchor bolt connected to a hammer drill or the like. Examples include glass, ceramics, synthetic resin, etc. Among these, glass is preferred because it can be easily melt-sealed).

Examples of the viscous liquid resin include thermosetting resins such as unsaturated polyester resins, epoxy resins, and phenol resins.

The aggregate is not particularly limited as long as it has a grain shape and material that significantly impedes the rotational impact movement of an anchor bolt connected to a hammer drill etc., or it has a spherical grain shape and a grain size of 0. 5-9. Q mm, and it is necessary that a specified amount can be sealed in the gap of the container.

Examples of the cavities include natural stones such as granite and ceramics such as magnesia clinker whose main component is magnesium oxide.

Examples of granular curing agents include organic peroxides such as benzoyl peroxide and methyl ethyl ketone peroxide when the viscous liquid resin is an unsaturated polyester resin, and amines such as diethylenetriamine and diethylamine propylamine when the viscous liquid resin is used for an epoxy resin. is diluted with inorganic substances such as calcium sulfate and calcium carbonate, mixed with water-soluble binders such as methyl cellulose and gum arabic, passed through a mesh screen to form water-containing granules, and dried. A range of 2 to zom is appropriate.

The inner container is filled with a viscous liquid resin, and the air bubbles are replaced with an inert gas before being melt-sealed.

As the inert gas, inert gases such as nitrogen and helium can be used, but nitrogen gas is suitable from the viewpoint of cost and workability.

Furthermore, since the bubbles are replaced with an inert gas, there is an effect of promoting coloring of the viscous liquid resin due to oxygen in the air and inhibiting the promotion of gelation.This effect is particularly noticeable at high temperatures, and there is a possibility of high temperature exposure. It is effective for exporting cargo holds to the south, where there is a large area.

In the outer container, the inner container, aggregate, and granular curing agent are filled and then sealed. The sealing method may be either melt sealing or camping sealing. Furthermore, as mentioned above, the method for sealing a container containing a viscous liquid resin is characterized by replacing it with an inert gas and then melt-sealing it, and the method for sealing a container containing a granular curing agent and aggregates. There is no change in product performance even if the product is sealed with a cap, so sealing with a camp is suitable.

Since there is no need for sealing with a cap or melt sealing, it has the advantage of ensuring safety during manufacturing and significantly improving productivity. In addition, the shape of the camp can be changed arbitrarily, and by attaching a brim to the cap, the upper hole,
When installing the cartridge by loading it into a wall hole, it is possible to prevent the cartridge from falling.

Examples of camping materials include synthetic resins such as polyethylene, polypropylene, and polyamide, and inorganic materials such as gypsum and mortar cement.

However, as shown in Figure 4, this relationship is reversed and the outer container is filled with viscous liquid resin and viscous liquid resin.
Aggregate and granular curing agent may be inserted into the inner container.

Next, the function of the anchor bolt fixing cartridge of the present invention will be explained along with how to use it.

The cartridge is loaded into a hole drilled in the base material, and the anchor bolt, which is connected to the hammer drill, crushes the outer container and inner container of the cartridge while making a rotational impact insertion motion toward the depth of the hole. The granular curing agent, which was substantially uniformly mixed with the aggregate, remains unpulverized during manufacturing, storage, and transportation, but is easily pulverized by the rotational impact insertion movement of the anchor bolt. It is pulverized and uniformly dispersed in the viscous liquid resin together with the aggregate, and the reaction with the KP formation accelerator starts uniformly at an extremely early stage, generating primary radicals of the polymerization initiator, exciting the vinyl monomer, and preforming the polymer. Through a crosslinking reaction with the polymer, curing is completed uniformly and solidified. As mentioned above, due to the rotational impact insertion movement of the bolt connected to the hammer drill, sufficient mixing is carried out and the mixture is filled to every corner of the gap between the hole and the bolt. The crushed container pieces are also part of the aggregate 7:c'), and the anchor bolts are firmly anchored.

The cartridge of the present invention also has the following characteristics:

The cartridge of the present invention is easy to handle because the curing agent is in the form of granules, and the possibility of chemical injury due to benzoyl peroxide is reduced, improving manufacturing safety. It also has the feature of further improving manufacturing safety because it does not require the use of organic solvents.

In addition, the vapor of viscous liquid resin is usually made of vinyl monomer and has a low flash point, which poses a risk of ignition or explosion during the sealing process of the container. The advantages of being able to perform the melt sealing work safely as well as the possibility of doing so can also be overlooked.

Next, the cartridge of the present invention will be explained in more detail by way of examples.

Embodiment In the cartridge shown in FIG. 2, the outer diameter 1011
111, a glass inner container with a length of 100 ports is sealed with unsaturated polyester resin S, OG-, and the outer diameter is 1711! It is housed in a glass outer container with a length of 110 mm, and a diameter of 15 to 2 mm is placed in the gap between the outer container and the inner container. Diluted with OIII's oxidized magnesia clinker-121 and calcium sulfate to a 40% concentration, the particle size was approximately 0.5 mm and approximately 1.0 mm. 1 ton of benzoyl peroxide granulated into granules of Q and 11111 (colored red with Rhodamine B for distribution observation) was placed in each container, and a polyethylene camp was placed in the container to prepare a cartridge. Vibration was applied for 10 minutes using a vibrator (sieve shaker manufactured by Iida Seisakusho), and the distribution of aggregate and granular benzoyl peroxide was observed. The results are shown in Table 1. Next, a hole with an inner diameter of 19 mm and a length of 130 m was drilled in concrete with a compressive strength of 250 mm, and a cartridge that had been subjected to a vibration test was loaded into the hole.
Anchor bolts with a length of 300,111 m were inserted while rotating with an electric hammer drill for 5, 15, and 30 minutes.

After curing for 60 minutes and 180 minutes, pull out the anchor bolt using a hydraulic pump using a center hole jack.
The pull-out load at that time was measured and shown in Table 1.

Comparative Example 1 Same container as Example, but with unsaturated polyester 4V in the inner container.
↑Seal 8 oz of fat and put the same aggregate 121 as in the example in the outer container.
and 1 g of powdered benzoyl peroxide diluted with calcium sulfate to a concentration of 40%, and a vibration test was conducted in the same manner as in the example.The cartridge was then subjected to driving and pulling tests, and the pulling loads were determined as shown in Table 1. It was shown to.

Comparative Example 2 Using the same container as in Example 1, 8.0 g of unsaturated polyester resin was sealed in the inner container and benzoyl peroxide was coated in the outer container. accommodates,
Similar to the examples, vibration tests and pull-out loads were determined and shown in Table 1.

(Additional color below) Table 1 (Note) Vibration test ○・・・・・・Distribution is even -X・・・・
−・Distribution is uneven (accumulation at the bottom) As is clear from the examples, the aggregate and granular benzoyl peroxide are mixed substantially uniformly even under vibrations expected during transportation, storage, etc. Moreover, the comparative examples It was shown that adhesion force can be obtained in a short time compared to that of .

The curing agent in the cartridge of the present invention is in the form of granules, is substantially uniformly mixed with the aggregate, and is easily pulverized by the rotational impact insertion movement of the anchor bolt, stirred and mixed, and starts a reaction, and is mixed with the resin. It is presumed that because the hardening agent with a thick (contact area) is uniformly distributed, fixing force can be obtained in a short time. can bring.

In Comparative Example 1, since the curing agent was in powder form, it was not mixed uniformly with the aggregate and accumulated at the bottom, so it is thought that the vicinity of the perforation did not harden and no adhesion force was obtained.

In Comparative Example 2, since the aggregate was covered with a hardening agent, even if the aggregate was crushed, the contact area with the resin was small, and the reaction was slow, so it is thought that the fixing force could not be obtained in a short time.

[Brief explanation of drawings]

FIG. 41 is a sectional view of a conventional bolt fixing cartridge;
FIG. 2 is a sectional view of one embodiment of the bolt fixing cartridge of the present invention, and FIG. 3 is a sectional view of another embodiment of the bolt fixing cartridge of the present invention. FIG. 4 is a cross-sectional view of the bolt fixing cartridge of the present invention, in which the outer container is filled with a viscous liquid resin, and the inner container is filled with bone fragments and a granular hardening agent. In the figure, 1 is a viscous liquid resin, 2 is a curing agent-coated aggregate, 3 is a bubble part, 4 is an outer container, 5 is an inner container, 6 is an aggregate, 7
8 indicates a granular curing agent, 8 indicates a bubble portion (inert gas), and 9 indicates a cap. For patent use Asahi Kasei Industries Co., Ltd. Figure 1 Figure 2 Figure 4 Figure 3

Claims (1)

[Scope of Claims] 1. In a bolt fixing cartridge comprising a crushable outer container and a crushable inner container, one of which contains a viscous liquid resin, and the other of which contains a curing agent and aggregate for the viscous liquid resin. A bolt fixing cartridge 2 characterized in that the curing agent is in the form of solid granules and is substantially uniformly mixed with aggregate; The bolt fixing cartridge according to claim 1, characterized in that: