JPS6080663A - Static crushing method and expansible tablet therefor - 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 provides a method for applying steps to brittle objects such as rocks and concrete.
The present invention relates to a method for crushing Iffh properties by filling a hole in a hole and using the expansion pressure thereof, and also relates to an expansion agent used therein.

Conventionally, this type of expanding agent has been manufactured by, for example, JP-A-Sho! 16-
As described in Japanese Patent Application No. 67059, 14 substances have been proposed that use quicklime and hydraulic substances as main ingredients, and several types have already been produced industrially. (
Stored with crushing agent. ) Such crushing agents are mainly in the form of powder, and the method of use is to mix the powdered crushing agent with water) 1
1. A method is used in which a water-based slurry is used to fill and cover the holes in a brittle object.

But how much does it cost? , 4! There are 41 drawbacks to the method using agents as follows.

1) When the agent evaporates, a hydration reaction of quicklime occurs and the flowability of the water-1-1 slurry decreases.7C
I have to get the six people to the hole quickly.
When the air temperature or water temperature is high, the injection will rotate.

2) If the 1-wave crushing agent is used beyond the 1-limit of the crushing temperature range (for example, in the case of a commercially available crushing agent for winter use, , when used at temperatures below 15°C, J-t) even if used within the commercial temperature range 11, if the diameter of the perforation is below 50111 mφ (
It is called the protrusion phenomenon or the four-gun phenomenon in which the shattered agent explodes out of the hole. (This phenomenon is referred to as a protrusion phenomenon), a crushing effect is obtained, and the work is extremely dangerous. Furthermore, the perforation diameter is within the applicable warm polishing area! i (l Even with a platform used within the former 11φ, it may be difficult to use when there are large changes in temperature or due to the effects of solar heat.
If! When the temperature of the crystalpox becomes high, or when the mixed water is at a high temperature, a sudden phenomenon often occurs.

3) The time it takes for the crushing effect to occur depends on factors such as temperature! 1
Depending on the situation, it takes a very long time, 12 to 24 hours, and the workability is poor.

For this reason, there is a method for preventing the protrusion phenomenon.
No. 25337 and Japanese Unexamined Patent Application Publication No. 49-21924 propose a method of filling the hole with a crushing agent slurry and then sealing the upper part of the hole with mortar or instruments. +! It has the disadvantage that I is poor and =1 strike is also high.

The purpose of this defense is to improve these drawbacks and provide an expanding agent and method that utilize the expanding power of the expanding agent to effectively, safely, and quickly perform static crushing of rocks, concrete, etc. .

(1) In statically crushing materials to be crushed such as 21 concrete 1~ using the hydration energy of the expansion agent, oxidation is performed using the expansion tlI component etc. Using calcium, aluminium and boric acid, amyl borate, boric acid phase, boron II lead, aluminum borate, boric acid 11), manganese borate, iron borate) π Sunny! , a small amount of diboron compound (:> 1 !4+
Type 1-Add! , the two mixtures are molded along the shoreline, and the swelling ratio of the muff shape +'1 in CI' is formed into a tablet with a hole in the device.
21 people took water 1) 141 times? 6 eyes 1'l ra b'1hiyhummu, flll 11
Using lucium 69 chloride as the M ratio (Itli￥zu), alumina is mento, boric acid, a small amount of cybutyric acid, Flu 114, porium chloride), A mixture containing at least one boron compound (among aluminum borate, lead borate, manganese borate, 11, iron forsate) added thereto was shrink-molded into a three-dimensional shape. 4i l165 dose M tablet for static crushing, (3) expansion 111i ('1 tablet's volume is 0.05-
05-1Ote, car] Static L) l described in item (2) of l-, whose bulk specific gravity is 2.0-3,2-Q? i'i' I
ll N) Il艮1! 1 tablet, this J, by using a swelling agent with specific ingredients in the form of a tablet, unlike conventional crushing agents, the flow rate of the slurry 111 is reduced and 2.
The disadvantage of not being able to do it by one person is eliminated, the work +'l is improved, and the protrusion phenomenon does not occur on the 2nd side 41, expansion 11
The expression time can be shortened to human [1].

This defense will be explained in more detail below.

Calcium oxide as a fat-swelling component of the present invention! l'
``l'i Di or calcined do'' can be used. As for the degree of firing, hard firing is better for controlling the hydration reaction. Regarding particle size, consider the mixing ratio with the other two components and the flexibility of molding into three-dimensional He. However, the Blaine value is 1500Cm2/g to 5000
Approximately C1l12/g is preferable.

In the present invention, aluminum phymen I~ refers to cement 1 whose main component is lumin resistant to calcium.

Another essential component of the swelling +118 agent of the present invention is UF
i! j dt li, 11 aluminum ricinate, lead borate, small 11! i At least one type of boron compound selected from mankan, lead borate, and nonaga.

These boron compounds suppressed the protrusion phenomenon and were used in the Song Dynasty.
1ηru. For example, hard-calcined 1I-7'i J fire only) "7-shaped expanded tablets, or hard-calcined quicklime and aluminocemen 1 only to t" / hard-calcined quicklime and aluminocemen 1 with i-agents fJ, white sand B (Without 1, the expansion IIIQ pressure in the direction of the side wall of the hole, which is necessary to crush the object to be crushed, cannot be obtained.)
), a protrusion phenomenon occurs, but in the expanded tablet T-+ji to which the boron compound shown in this defense is added, the protrusion phenomenon occurs in Benshi 1! The object to be crushed can be crushed by immediately flattening the expansion pressure.

The mixing ratio of each component is 1 to 10 to 10 to 0
1 part of Ichiko, Calcyl oxide l>30-90 parts by weight, the present invention (・indication+J/,: jli elemental compound 0, 2・”
2 (l xi E41 fill culm 1α or good, 1,
Yes, except for these scabbards, it is necessary to crush 2 C4c1
11 gain 1i'h<low g or protruding ring g! /
] From X, it becomes 'L, l, iゝ'-J.

Each component can be obtained by pulverizing it into a powder, mixing it, and then compressing it using a tablet machine or a Bricherer 1-machine. Preferably, a measuring agent such as a type 111I agent (V) is mixed in advance.

The volume of the molded expanded tablet is determined based on the ease of filling when filling the perforations formed in the object to be crushed, and the relationship between VJ3 pressure development due to the hydration reaction of calcium oxide after filling. , if the hole diameter is 30-100mmφ, 0.0
The crushing effect of the 5-10c1 volume is also great.

If the particle size is less than 0.05cm3, the protrusion phenomenon will occur more easily, and if the particle size exceeds 10c++3, the protrusion phenomenon (
However, the crushing effect will be reduced,
Furthermore, the crushing time is seriously delayed.

The bulk specific gravity of the molded/= 1ki5111m tablet is handled by IF,? The hydration reaction (exothermic reaction) of calcium oxide begins by injecting the condensate that is hard enough to keep its shape and filled with water, and the initial reaction is 71. lig the water vapor
(Through the space between the tablets) '7 Popularly released (3L℃ shape that can break)
~3.2 is preferable. If the bulk specific gravity is less than 2.0, the particles may break during handling, and the water/water ratio when filling the expanded tablet and injecting water will increase. The Ca Q ratio increases, making it difficult to obtain a large expansion pressure.On the other hand, when the bulk specific gravity is 3.
If the number exceeds 2, it is difficult to detect and is preferred.

Next, in Fig. 1, which describes the embodiment of the invention in detail according to the drawings, d3 is a material to be crushed, such as concrete 1-, and a material of a certain length (with a certain hole diameter) is placed at certain intervals. After filling the PM tablet 3 of the present invention into the perforation 2 of the hole 2, inject water through the hole [14] of the perforation 2 and expand the expansion tablet 3 (11) to crush the tablet 1. Fracture J. In the figure, 5 is the hole bottom.

When the /J method of the present invention is J, it is 1it! l! Filled with '+' substance 1: Fat expansion ↓, i: Water vapor generated along with the hydration reaction of the agent 1! ! ＋n To prevent the water vapor pressure inside the loading hole from increasing during release through the gap in the tablet, even if the diameter is set to 50 mm or more, the environmental temperature Even if there is a large change in the pressure, no protrusion occurs at all, and the wJ inflation pressure can be used effectively, improving work safety.
1 increases.

Te1. In addition, unlike conventional crushing agents, there is no need to mix the crushing agent and water in a container in advance and immediately fill the loading hole with the same, and only water can be injected into the loading hole. Tablets exhibit a crushing effect in an extremely short period of time between 1 and 3 FR, so the work ratio is reduced to 1 J5.
This makes it possible to carry out crushing work with great economic benefits.

The present invention will be specifically described below using Examples.

Example: A circular well-shaped unreinforced concrete with a diameter of 3001 Iln1 and a height of 500 In II+ has a hole diameter of eomm and a length of 450 mm.
A specimen with a single hole (n+I11) drilled in the center was used. Condensate containing 1651 tablets having the composition, shape, volume, and specific gravity shown in Table 1 as shown in Table 1 was injected into the holes, and the crushing status of the concrete was observed.

11-For comparison, the powdered fat swelling agent of the present invention was directly filled into the holes and the condensate was injected. The procedure is the same as in the embodiment for kneading the material with water in a container beforehand, making a slurry, and applying it to one person in a hole.

In the Il'l Song Dynasty, Mubu decided to use the Ming's inflatable tablets, and the protruding IC-3 was completely mediated. I only need to be safe,) for an hour (＾me-(' 9,0i11.1
In the meantime, it was found that work 1] 1 could be crushed well.
ζ.

Table 1 (Continued from Table 1) Crystal 1 * Directly fill the hole with 111g of powdered swelling agent and apply IJ.
After that, water was injected.

A commercially available crushing agent (8' cup) was mixed with water to form a slurry, and then injected into the loading hole.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the method for crushing concrete 1- etc. according to the present invention. 1... Material to be crushed such as concrete 2... Perforation 3... Iki5 +11B tablet 4...
- Hole opening of perforation 2 5... Hole bottom of perforation 2 Special applicant Asahi Kasei Industries Co., Ltd. Agent Patent attorney Hide Komatsu Agent Patent attorney Hiroshi Asahi

Claims (1)

[Claims] (1) Hydration of the swelling agent [Using energy] When statically crushing objects such as concrete 1 to 1,
1i 1! Calcium oxide is used as the component, and 3) 'luminacemene' and boric acid, boric acid, chives, copper formate, zinc oxide, boron, lumium, boron, and boric acid are added. Manganese acid, iron borate <-2
A mixture to which a small amount of a boron compound was added was molded into a cotton ball, and the body shape was expanded by 1° and a 11 tablet was loaded. Static crushing 1/I method 1, which is characterized by introducing 1 t of light into the hole, 2' + IU, and 11 t of water. Luminocemene 1~, Oj, Biboric acid, Boric acid Anl-Niu 11, No1\tsu fl! 11]
, zinc oxide, boric acid 7/luminium 18, boric acid 1;
1. Adding at least a boron compound selected from manborate (manborate) and iron borate (t'1)
An expansible tablet for static crushing made by compression molding the mixture C into a three-dimensional shape. :3) The size of the expanded tablet is 0.0!1~10cm
3 Te and a bulk specific gravity of 2.0 to 3.2.