JPS5851947A - Cartridge of expansible breaking material and use thereof - 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 expandable rupture material cart IJ and method of using the same.

Traditionally, dynamite has been used for crushing rocks and demolishing concrete structures, and this has left many problems with pollution such as vibration and noise, as well as handling safety, but in recent years lime-based Static destructible materials based on inorganic compounds have been developed and are increasingly being used due to their non-polluting and safe properties.

However, these destructive materials cause an expansion effect when they react with water, so they must be sufficiently kneaded with water using a hand mixer, etc., to form a slurry, and then injected into holes drilled when destroying rocks, concrete, etc. The product was filled with water and fully utilized the destructive effect of the expansion pressure within 1 to 10 hours.
These conventional methods require mixers for kneading as described above.

In addition, when considering construction work on-site, on steep slopes or in work environments with poor footing, these mixing mixers become even more difficult to install, often causing trouble to the work, and are unprofitable in terms of work efficiency. It has become an economy.

The present inventor has accomplished the present invention as a result of intensive research to eliminate the drawbacks of the above-mentioned conventional methods.

That is, the first aspect of the present invention is an expansible destructible material, characterized in that a container made of water-absorbing paper such as paper waste paper and paper towel paper is completely filled with an expansible destructible material made of a lime-based inorganic compound. It is a cartridge.

Further, the invention of λ・2 of the present invention is that the curtain of the first invention is immersed in water until the water absorption rate becomes 25 to 35% by weight based on the material to be destroyed, and a hole is drilled into the object to be destroyed such as rock or concrete. To describe in detail the expandable destructive material cartridge product, which is characterized by filling the hole and poking it through the filling opening with a rod-shaped object such as an iron rod, the hole is evenly filled with the destructive material slurry. A container made of paper or paper towel paper, preferably a cylindrical container (caliber: g 30
Cartridges (~60 mm long and 200-600 mm long) lightly filled with destructible material (filling 70-90% of the internal volume) are used for 3-3 hours before the operation to be destroyed.
The present invention allows work to proceed economically and easily by immersing the material in water for 10 minutes to absorb water and filling the hole according to the length of the hole in the rock or concrete to be destroyed. The paper waste paper, paper towel paper, etc. used for this process have higher water absorbency than ordinary Japanese or Western paper, but they also have high mechanical strength and do not break during normal operations after absorbing water.

In addition, the water absorption state of the destructible material after immersion in water for 3 to 10 minutes is usually 25 to 35% of the heavy chain of the destructible material.
It absorbs % of water by weight, and with almost the same amount of water required for kneading by mixers in the conventional method, a sufficient breaking effect can be obtained after filling the cartridge with water absorbed in water.

The main features of these destructive cartridge products made of paper waste paper, paper towel paper, etc. are listed below.

(1) Until now, the problem of working at low temperatures in winter or in cold regions has not been resolved, but even during these constructions, only the immersion water temperature can be adjusted according to the outside temperature (for example, using hot water of 30°C or 40°C). This allows easy and economical destruction even at low temperatures.

(2) Injecting the destructive material slurry into a downward drilling hole required complicated work and was extremely difficult using the conventional method, but by using all the cartridges of the present invention, filling at all angles can be easily performed. becomes possible.

(31 Regarding destruction of rocks, etc. underwater, by using the cartridge of the present invention, dispersion of slurry during conventional underwater work can be prevented, filling can be done easily economically, and it is more effective. Underwater destruction becomes possible.

Next, the present invention will be explained in more detail with reference to Examples.

Example 1 A cylindrical bag with a diameter of 25 m and a length of 200 bags was made from commercially available paper towels using adhesive, and lime-based destructive material 'i
190? After filling the car, the length of the IJ edge is 1
Tie both ends tightly with thread so that there are 50 fins.

On the other hand, the object to be destroyed is cylindrical concrete (5x5o
l, 300 tma, compressive strength 600 Ky'cm
) in the center with a hole diameter of 3 mm and hole length of 200 mm.

The above-mentioned filled cartridge was immersed in a water reactor (water temperature 20°C) for 5 minutes and absorbed water (water absorption rate 30% by weight).
Two tubes were filled from the center hole of each specimen, and the specimen was struck four times with an iron rod to completely fill the specimen, and the time required for the specimen to break was 1 hour and 23 minutes.

When a 9-kneaded slurry is injected as in the conventional case, the destruction time is 2 hours and 31 minutes.

Nao, a paper towel cartridge was immersed in hot water to test its destruction at low temperatures, with a water absorption rate of 28-32 (weight: 96).The results were as follows.

Destruction time of concrete specimen Example 2 As a destruction test during underwater construction, water was placed in a metal 20 container, and a concrete specimen with a hole in the center similar to that in Example 1 was immersed upward.

A hole filled with water was filled with two cartridges that had been immersed in water for 3 minutes, and the concrete was pierced four times with an iron rod to test the state of destruction of the concrete.The results were as follows.

Judging from the results of the fracture time of concrete specimens in water, the cartridge-destroying material of the present invention, which is made entirely of highly absorbent paper such as paper waste paper or vapor towel paper, is economical and easy to work with. I hope it's effective.

Patent applicant Sumitomo Cement Co., Ltd. 241

Claims (1)

[Claims] U+ Heber Expandable destruction characterized by filling a container made of water-absorbing paper, such as waste paper or paper towel paper, with an expandable destruction material such as a lime-based inorganic compound. Wood cart IJ Tsuji. (2) A cartridge of destructible material filled with an expansible destructible material made of a lime-based inorganic compound is placed in a container made of water-absorbent paper such as paper waste paper or paper towel paper, and the water absorption rate is 25 to 25% relative to the destructible material. Immerse it in water until it reaches a weight of 35, fill it into the hole drilled in the object to be destroyed, such as a rock or concrete (IJ), and poke it with a rod-like object such as an iron rod through the filling port.
A method of using an expandable destructive material cartridge characterized by uniformly filling a hole with a destructive material slurry.